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50 Interesting 6th Grade Science Fair Projects and Classroom Activities

Award-winning ideas and science demos on every topic.

Collage of 6th grade science fair projects, including a paper plane launcher and compost cups

Sixth grade science covers a wide variety of topics and varies depending on the curriculum. We’ve rounded up the best 6th grade science fair projects to inspire kids, as well as classroom science demos and activities that will grab their attention.

To make it easier to find what you’re looking for, we’ve rated all the projects and activities by difficulty and the materials needed:


  • Easy: Low or no-prep experiments you can do pretty much anytime
  • Medium: These take a little more setup or a longer time to complete
  • Advanced: Experiments like these take a fairly big commitment of time or effort
  • Basic: Simple items you probably already have around the house
  • Medium: Items that you might not already have but are easy to get your hands on
  • Advanced: These require specialized or more expensive supplies to complete

Biology and Earth Science 6th Grade Science Fair Projects

Chemistry 6th grade science fair projects, physics and engineering 6th grade science fair projects, 6th grade science classroom demos and hands-on activities.

For students interested in anatomy, animals, geology, ecology, and more, these are the science fair projects they need!

Find the fastest way to ripen fruit

Difficulty: Medium / Materials: Medium

Need to ripen those bananas or peaches in a hurry? Do some research and then experiment to find the fastest way to safely ripen fruit without sacrificing flavor.

Clean up an oil spill

Sixth grade science student using a spoon to try to catch a puddle of oil floating on water

Learn why an oil spill is so devastating for wildlife and the ecosystem with this hands-on activity. Kids experiment to find the best way to clean up oil floating on water and rescue the animals affected by the spill.

Learn more: Oil Spill Cleanup at Kitchen Counter Chronicle

Explore new ways to filter water

Basic water-filtration systems are pretty simple, but they make terrific science fair projects. Experiment with different setups, and find a way to make safe drinking water for people who need it.

Shake it up with earthquake science

Two foam plates with structures built from wood craft sticks and putty on top

Difficulty: Easy / Materials: Basic

Build simple model structures, then experiment to see how the actions of earthquakes affect them. Do research into what engineers and architects build in earthquake zones, then perform an experiment to see if you can improve on their findings.

Learn more: Earthquake Science at Love To Know

Grow a better garden using hydroponics

Hydroponics is the hot new gardening trend, but is it really a better way to garden? Find out with a DIY hydroponics gardening setup, comparing the results with traditional container gardening.

Find out if chewing gum really helps improve test scores

One of the more popular 6th grade science fair projects answers the question: Does chewing gum affect test scores? You’ll be surprised by the results!

Create top-notch compost in a cup

Two plastic cups filled with compost and covered in plastic wrap

This is an easy science activity, and you can turn it into a science fair project by experimenting with different mixtures, layering, and conditions for your compost cups.

Learn more: Compost Cups at The Happy Housewife

Learn the best way to repel ants

Do you really need to use poisons to keep ants out of your home? Explore other possible solutions in this science project idea.

Simulate a tsunami and find ways to protect people

Build a model to simulate a tsunami, then come up with potential ways to minimize the damage future waves may cause.

Design a squirrel-proof bird feeder

Squirrels can be real pests at backyard bird feeders, and people are always trying to come up with new solutions to the issue. Can you be the one who finally solves this pesky problem?

Students who love to mix up chemicals and explore the results will enjoy these 6th grade chemistry science fair ideas.

Compare baking powder and baking soda

Baking powder and baking soda have similar names, but do they behave the same when used in a baking recipe? Bake up a few cakes and find out!

Devise a formula for creating the biggest soap bubbles

Soap bubble formulas vary, and some allow you to make bigger bubbles than others. What does it take to make the biggest bubble of them all?

Learn if tea and cola damage teeth

Three eggs next to containers of coffee, tea, and cola, with a permanent marker

Difficulty: Easy / Materials: Medium

Use eggshells to explore how various beverages can stain teeth in this classic 6th grade science fair project. (It also teaches important lessons about dental hygiene!)

Learn more: Teeth and Eggs at Education.com

Look for iron in your breakfast cereal

The human body needs iron to be healthy, and many breakfast cereal boxes boast that they contain it. Conduct a 6th grade science fair project to find out if cereals really contain all the iron they say they do.

Find the best way to clean up old coins

Pennies in small cups of liquid labeled coca cola, vinegar + salt, apple juice, water, catsup, and vinegar. Text reads Cleaning Coins Science Experiment. Step by step procedure and explanation.

Use common household items to make old oxidized coins clean and shiny again in this simple chemistry experiment. Form a hypothesis about which method will work best, then do some research to explain the results.

Learn more: Cleaning Coins Experiment at Gally Kids

Explore the effects of various sugars on yeast

Yeast needs sugar to grow, but does the type of sugar matter? And can you use sugar substitutes instead? This is a sweet way to find out!

Grow the biggest carbon sugar snake

Large carbon ash snake growing out of a pan of sand

Tinker with the formula to create the biggest carbon sugar snake possible! This is an engaging project that will wow other students too.

Learn more: Carbon Sugar Snake at KiwiCo

Determine whether soda has more sugar than juice

Which do you think has more sugar, a glass of Pepsi or one of orange juice? Boil away the water to find out in this 6th grade chemistry experiment.

Explore the properties of plastic made from milk

Making milk from plastic is actually pretty simple. Turn it into a science fair project by learning more about its strength, durability, and flexibility, and proposing a practical use for it.

Determine which type of juice has the most vitamin C

Vitamin C might not immediately cure your cold, but it definitely has health benefits. Does orange juice really have the most vitamin C? Conduct an experiment using an iodine titration method to learn the answer.

Calling all tinkerers! Build, create, and engineer a science fair project using physics principals.

Build a powerful paper-plane launcher

Sixth grade science student using a homemade launcher to launch a paper airplane

Here’s a cool 6th grade science fair project. Design and build a paper-airplane launcher that can fly a plane farther than anyone else’s.

Learn more: Paper Plane Launcher at Frugal Fun for Boys and Girls

Figure out the fastest way to cool a soda

Adding ice to a glass of soda cools it off, but it also waters it down. See if you can find a fast way to cool down soda while it’s still in the can or bottle instead.

Launch a bottle rocket higher or more accurately

A basic water-powered rocket isn’t that hard to assemble, but you can turn it into a bona fide 6th grade science fair project by playing around with the design. Figure out how to launch it higher, or change the trajectory to hit a certain target.

Identify the best insulating material

Insulating an item can prevent it from losing heat, like an insulated beverage bottle. What materials are the most effective insulators? How can you find out?

Drop parachutes to test air resistance

Card with text Which is the best parachute? Plastic, paper, cloth. Surrounded by pieces of fabric, plastic, and string.

Use the scientific method to test different types of material and see which makes the most effective parachute. This is an easy project that’s perfect for kids interested in design and engineering.

Learn more: Parachutes at Education.com

Discover which produce best powers a clock

Here’s one of those classic science fair projects that you can really customize to make your own. Try testing out a variety of fruits and veggies, or playing around with connecting several types of produce to see what happens. This inexpensive kit has all the supplies you need.

Engineer the strongest craft stick bridge

Difficulty: Medium / Materials: Basic

This is a classic science activity for the classroom, but it works well for 6th grade science fair projects too. Form a hypothesis about the strongest type of bridge design, then build your own models to test it out.

Assemble the best simple motor

A simple motor built from basic materials

Looking for an idea that’s impressive but not too complicated? Build your own simple motor! You only need a few special supplies, including insulated copper wire and neodymium magnets . Turn it into a true 6th grade science fair project by altering the variables to see if you can increase the speed, reduce the noise, or make other improvements.

Learn more: DIY Motor at Home Science Tools

Learn if room temperature affects candle burn rate

This is a simple experiment to conduct, and it’s inexpensive too. Burn birthday candles in a variety of temperatures to see if they burn faster in higher temps.

Determine how much money energy vampires are wasting in your home

So-called “energy vampires” use up energy even when they’re not in active use. And energy costs money. Determine how much energy is being wasted by energy vampires in your home, and figure out how much money you can save on an annual electric bill by getting rid of them.

Engage students with a live demonstration showing the concepts they’re studying. Even better, give them a chance to get hands-on and do the science themselves!

Assemble motorized tiny dancers

AA batteries with tiny wire figures twisted around them, with tutus added to look like ballet dancers

Build a homopolar motor to make little spinning wire dancers. It takes a little practice to get it right, but it’s a really fun way to learn about motors and energy.

Learn more: Tiny Dancers at Babble Dabble Do

Amplify your smartphone with basic supplies

Smartphone amplifier made from paper cups and a toilet paper tube

No Bluetooth speaker? No problem! Build your own from paper cups and a toilet paper tube. This is a 6th grade STEM challenge that’s sure to amaze kids.

Learn more: Cell Phone Speaker at The Mad House

Wear a gene bracelet

Bags of pony beads labeled with various traits like hair color and eye color

This is a neat way to talk about our genes. Have each student add pony beads to their bracelet to represent different traits. Then they can compare their differences and similarities. It’s likely that no two students will have the same bracelets!

Learn more: DNA Gene Bracelet at Pragmatic Mom

Make naked eggs

Sixth grade science student holding a raw egg without a shell

Students dissolve the calcium carbonate eggshell in vinegar and discover the membranes beneath that hold the egg together. It’s a unique and intriguing way to learn about acid-base reactions.

Learn more: Naked Egg at Making Memories With Your Kids

Experiment with naked eggs

Raw egg without a shell that has been dehydrated sitting next to a regular egg

Now, submerge those naked eggs in corn syrup and water to learn about osmosis. The eggs shrink or grow depending on the liquid they’re placed in. So cool!

Learn more: Naked Egg Experiments at Exploratorium

Send water traveling down a string

String running down into a glass partially filled with blue water

Explore the properties of cohesion and adhesion with this simple experiment using only water and cotton string. Expand the learning by trying the same experiment with different materials and liquids.

Learn more: Traveling Water at Rookie Parenting

Launch a two-stage rocket

The rockets used for space flight generally have more than one stage to give them the extra boost they need. This experiment uses balloons to model a two-stage rocket launch, teaching kids about the laws of motion.

Change the color of a liquid in an instant

Want to see your kids gasp in amazement? Perform the iodine clock reaction. You only need a few drugstore chemicals to change the solution from clear to dark blue faster than students can blink.

Levitate a Ping-Pong ball

Sixth grade student holding the cut off top of a plastic bottle with a straw attached. A ping pong ball is floating over the bottle top.

Kids will get a kick out of this experiment, which is really all about Bernoulli’s principle. You only need plastic bottles, bendy straws, and Ping-Pong balls to make the science magic happen.

Learn more: Bernoulli Ping-Pong Ball at Buggy and Buddy

Use a fidget spinner to understand inertia

Series of photos of a child holding a fidget spinner in action. Text reads 3 lights = highest inertia, decreasing inertia, 0 lights = lowest inertia

Learning about the laws of motion? This experiment uses a fidget spinner with three lights to show how mass and torque affect inertia.

Learn more: Fidget Spinner Inertia at Homeschool Momgineer

Build a heart pump model

Simple heart pump model made from plastic bottles, drinking straws, and modeling clay

Students gain a deeper understanding of the cardiovascular system when they construct a working model of a heart ventricle.

Learn more: Heart Pump Model at Tina’s Dynamic Homeschool Plus

Construct a pair of model lungs

Sixth grade student holding model lungs and diaphragm made from a plastic bottle, duct tape, and balloons

Build model lungs using a plastic water bottle and some balloons to learn more about the respiratory system. You can modify the experiment to demonstrate the effects of smoking too.

Learn more: Lungs Model at Surviving a Teacher’s Salary

Dissect an owl pellet

Sixth grade science student wear gloves, holding an owl pellet over a red tray

Dig into an owl’s regurgitated meals (it’s not as gross as it sounds!) to discover what their diet consists of. Owl pellets are readily available online, and kids will be intrigued by what they find.

Learn more: Owl Pellets at Gift of Curiosity

Study sound waves with a spoon

Sixth grade science student holding yarn strings to her ears and looking surprised

With just yarn and a metal spoon, learn how vibrations create sound, and explore the role of conductors.

Learn more: Spoon Sound Waves at KC Edventures With Kids

Make sparks with steel wool

Steel wool sitting in an aluminum tray. The steel wool appears to be on fire.

All you need is steel wool and a 9-volt battery to perform this science demo that’s bound to make their eyes light up! Kids learn about chain reactions, chemical changes, and more.

Learn more: Steel Wool Reaction at The Homeschool Scientist

Create a colorful cell model

Cell model made from a spiky pink hand sanitizer holder, labeled Our Bacterium Prokaryotic Cell

There are lots of cell model projects out there, but this might be one of the cutest ones we’ve seen! And it’s easier to assemble than you might think.

Learn more: Cell Model at Angelic Scalliwags

Extract DNA from a strawberry

It’s surprisingly easy to pull a strand of DNA from this sweet fruit. Teach your kids about genetics and DNA with this 6th grade science project that uses only basic household supplies.

Design a biodome

Model biodome made from plastic bottles and containers filled soil with and plants

There’s so much to learn in this 6th grade science project. Kids build a scale-model biodome to learn more about different environments and ecosystems, decomposition, the food web, and more.

Learn more: Biodome Project at Teach Engineering

Pull an egg into a bottle

Glass bottle with bowl holding three eggs, small glass with matches sitting on a box of matches, and a yellow plastic straw, against a blue background

This is another classic science demo that never fails to delight. Use the power of air pressure to suck a hard-boiled egg into a jar—no hands required.

Learn more: Egg in a Bottle at Left Brain Craft Brain

Make a pH indicator from a vegetable

Making a PH indicator from cabbage for 6th grade scientists.

Who knew such a simple material could be used to determine a substance’s acidity or alkalinity? Your students can explore acids and bases with this simple experiment.

Learn more: Red Cabbage Indicator at Compound Interest

Need supplies for your 6th grade science fair projects and activities? Check out these 24 Science Kits for Middle and High School That Make Hands-On Lessons Easy .

Plus, get all the latest teaching tips and tricks straight to your inbox by signing up for our newsletters .

This roundup includes interesting 6th grade science fair projects, as well as classroom demos and hands-on science activities to try.

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6th grade science topics

This collection includes resources to support teachers and students as they engage in the topics outlined in the 6th grade NYC Science Scope & Sequence.  Resources support the following units: 6:1 Energy and Simple Machines; 6:2 Weather and the Atmosphere; 6:3 Diversity of Life; and 6:4 Interdependence. 

Please note that the files in this collection can not be downloaded from WeTeachNYC because they link out to an external site.

Included Resources

Energy and simple machines.

This collection of resources supports unit 6:1 of the 6th grade science Scope and Sequence: Energy and Simple Machines. 

Weather and the atmosphere

This collection of resources supports unit 6:2 of the 6th grade science Scope and Sequence: Weather and the Atmosphere.

Diversity of life

This collection of resources supports unit 6:3 of the 6th grade science Scope and Sequence: Diversity of Life.


This collection of resources supports unit 6:4 of the 6th grade science Scope and Sequence: Interdependence.

6th Grade Science Fair Projects

  • Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
  • B.A., Physics and Mathematics, Hastings College

Ideas for 6th-grade science fair projects can be a challenge to conceive. Projects need to be sophisticated and elaborate enough to show complex thinking but not so complex that they would be impossible for a sixth-grader to execute. These are topics and experiments suitable for upper-grade school or entry-level middle school.

General Project Ideas

The ideas in this section and the following one are phrased as questions because that is generally how schools require sixth-grade students to announce their projects, as a question, or hypothesis , to be tested and answered.

  • What types of fruits or vegetables are suitable for making a battery?
  • Which apps run down a cell phone battery most quickly or use up a lot of data. This is a good project for making attractive graphs.
  • How much paper is required to register for school? Can you propose a way to streamline the process to make it more environmentally friendly? Would this process save time or money?
  • What exactly does a vacuum cleaner pick up? Use a magnifying glass or microscope to look at the contents of a bag or canister. What types of material are not picked up?
  • Does coloring carbonated water change how its taste is perceived?
  • How long does it take for milk to go "bad" refrigerated and unrefrigerated? What about juice?
  • Do all crayons have the same melting points? Why or why not?
  • Do different types of carbonated sodas have different pH? Do you think this can affect tooth decay?
  • What types of fruits, vegetables, and flowers can be used to make a pH indicator? Make some indicator solution, write up a protocol, and test home chemicals to explore the color range of your solution.
  • Can you tell different brands of soda pop apart based on taste?
  • Do some plants grow better inside than outside?

More Complex Projects

The projects in this section tend to be slightly more complex than those suggested in the previous section. They are still appropriate for sixth-grade science fair projects but may take more steps and/or time to execute.

  • What type of air freshener makes a school bus smell best to the greatest number of students?
  • Which type of water contains the lowest amount of chlorine?
  • What type of insulation holds in heat the best?
  • Do different types of knots affect the breaking strength of a rope?
  • Does wiping a doorknob with an antibacterial wipe really reduce the numbers of bacteria? Does using hand sanitizer really reduce the amount of bacteria on your hands?
  • How do different flame retardants affect the flammability and burning rate of cotton?
  • Which cooking method results in the least loss of vitamin C?
  • Does temperature affect the maximum size you can inflate a balloon?
  • Does the color of a crayon affect how long of a line it will write?
  • Does changing the temperature affect how long a pen will last?
  • Do all types of bread mold at the same rate?

Tips and Hints

By the sixth grade , students should have a good understanding of the steps of the scientific method . The best science fair project ideas will be ones with a hypothesis that is tested by an experiment. Then, the student decides whether to accept or reject the hypothesis and draws a conclusion. This is also a good grade level for presenting data in graphs and charts.

Parents and teachers need to understand that sixth-graders still need help with ideas, especially finding ideas that use materials that are readily available and that can be completed within the allotted time frame. One way to come up with a good idea is to look around the house and find topics a sixth-grader may have questions about. Brainstorm these questions and find ones that can be written as a testable hypothesis.

  • Chemistry Science Fair Project Ideas
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  • First-Grade Science Projects
  • Middle School Science Experiments
  • 4th Grade Science Fair Projects

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science research topics for grade 6

Are you looking for science activities to do with your 6th graders? No sweat. We have you covered. Check out our list of 41 science projects and experiments that you can try with your 6th graders this month.

  • How Do Antacids Work? | Biochemistry Discovery Lab – Grades 3-6, Simulate out how antacids work to treat heartburn by using fake stomach enzymes.
  • Mice & Music | Hubpages.com – Grades 3-6, Find out if music affects the performance of mice in a maze.
  • A Magnetic Primer Designer | Sciencebuddies.org – Grades 3-6 Biology project that utilizes magnets to mimic the process that scientists use to replicate DNA, using the polymerase chain reaction.
  • Growing Bacteria in Petri Dishes | Stevespanglerscience.com – Grades 3-6 biology In this science fair project, you must find samples of bacteria from an assortment of surfaces to find the surfaces that are the dirtiest.
  • Yeast Metabolism with and without Aeration | Sciencebuddies.org – Grades 6-8 Biology experiment that evaluates the effects of glucose metabolism in yeast.
  • Aspirin Absorption in Carbohydrate Solutions | All-Science-Fair-Projects.com – Grades 6-8, Does aspirin absorb into the bloodstream quicker if taken with a carbohydrate food? Test aspirin dissolution in an assortment of carbohydrate solutions.
  • Bacteria and Toothpaste | All-Science-Fair-Projects.com – Grades 6-8, Do you know which toothpaste cleans your teeth best? In this project, you will row bacteria from your recently brushed teeth in petri dishes to find out the answer.
  • Effects of Ozone on Plants and Health | Julian’s Science Fair – Grades 4-6, Environmental conditions can dramatically impact plant growth and germination. Does increased ozone stunt germination and plant growth? Grow some plants and find out.
  • Making Batteries from Fruits and Vegetables | Sciencebuddies.org – Grades 4-7, Use veggie power to build a simple battery from a variety of vegetables. Which ones are the most powerful?
  • How Do Roots Grow When the Direction of Gravity Changes? | ScienceBuddies.org -Grades 6-10, Plants respond to gravity by stems that grow upward and roots that grow downward. Experiment with germinating seeds and rotate them to make up down and down up. How do you think the growing seedlings will respond?
  • Hydroponics vs. Soil Growth | All-Science-Fair-Projects.com – Grades 6-8, In this project, students find out if plants grow better in soil or a hydroponic solution.
  • Puppy Proportions: Your Dog’s Early Months | Sciencebuddies.org – Grades 6-8, Find out how a puppy’s weight, growth, and proportions change early in their lives.
  • Do Migratory Birds Like It Hot? | Sciencebuddies.org – Grades 6-8, Pick a species of bird and determine if there is a correlation between air temperature and where and when the birds migrate.
  • That’s a Real Smile! …or is it? | ScienceBuddies.org – Grades 6-8, Can people tell the difference between a fake smile and a real one? Gather information from dozens of volunteers to find out.
  • Build a Raft Powered by Surface Tension | Sciencebuddies.org – Grades 6-10, Learn about the properties of surface water tension, and use it to propel a raft.
  • Which Metal Is the Most Resistant to Corrosion? | Sciencebuddies.org – Grades 6-8, Test several kinds of metal exposed to the air, tap water, and saltwater to determine which are the most resistant to corrosion, and which substances are the most corrosive to them.
  • Ionizing vs. Photoelectric Smoke Detectors | All-Science-Fair-Projects.com – Grades 6-8, Learn how smoke detectors work, and compare the effectiveness of ionizing smoke detectors to photoelectric smoke detectors.
  • Robot Movement | Education.com – Grades 6-8, Construct a robot equipped with sound/touch sensor circuitry. Run it through a maze to find out if it displays sequential or random movement.
  • Repurposed Designs | Education.com – Grades 6-8, Identify items that need repurposing such as e-waste, batteries, and mattresses. Then get creative and Invent your own original repurposed design.
  • Solar-Powered Robot Bug | Sciencebuddies.org – Grades 6-8, Explore electronics and solar energy by building the Frightened Grasshopper, a solar-powered bug.
  • Stressed Out with Beams | Sciencebuddies.org – Grades 6-8, Test the load-bearing capacity of several types of beams, including I-beams, U-beams, rectangular beams, and T-beams.
  • Build a Gauss Rifle | ScienceBuddies.org – Grades 6-8, Use magnets and ball bearings to build a rifle based on magnetism. Investigate how many magnet and ball bearing “stages” affect the velocity and distance of the projectile.
  • Smart Medicine Cabinet | ScienceBuddies.org – Grades 6-8, Do you know someone who needs to take medication daily? Create a sensor that reminds patients when to take their medication.
  • Grow the Best and the Largest Crystals | Sciencebuddies.org – Grades 6-8, Figure out the best temperature for making the largest, purest crystals using water and borax.
  • What’s the Fastest Way to Cool a Soda? | ScienceBuddies.org – Grades 6-8, Experiment with different ways to cool a can of soda.  Find out the fastest way to get your tall cold drink.
  • How Much Potential Energy Do Different Nuts Have? | Education.com – Grades 6-8, Explore the energy of living things. Prove that different varieties of nuts produce electricity in a series of experiments.
  • How Salty Does the Sea Have to Be for an Egg to Float? | ScienceBuddies.org – Grades 6-8, Figure out precisely what concentration of salt in water is required to make an egg float.
  • Washing Detergent & Hydrophobic Soil | Education.com – Grades 6-8, Some soils do not absorb water very well.  Find out why and if washing detergent and change their ability to absorb water.
  • Make Your Own Psychrometer | Sciencebuddies.org – Grades 6-8, Make a psychrometer to measure relative humidity, then use it to measure RH in a variety of weather conditions.
  • Do Our Storm Drains Keep the Ocean Trash Free? | ScienceBuddies.org – Grades 6-8, Test your local grated storm drain inlets to see if they’re up to the task of keeping plastic litter out of your community’s stormwater drainage system. If they’re not, work on improving the design.
  • Can Water Float on Water? | ScienceBuddies.org – Grades 6-8, Can liquid water float on liquid water? Investigate how the density of water is affected by its temperature and salinity.
  • What Weather Factors Create Radiation Fog? | Sciencebuddies.org – Grades 6-8, Make systematic observations about the weather conditions needed to create radiation fog. Can you forecast when and where it will occur?
  • The Science Behind Tsunamis | Sciencebuddies.org – Grades 6-8, Study the effect of water depth on wave velocity. Learn how tsunamis form and create your own simulation model wave tank to generate a tsunami.
  • Killing ‘Vampires’: Saving Money and Power | Sciencebuddies.org – Grades 6-8, In this project, you’ll identify electricity “vampires” in your home, such as computer peripherals and electronic equipment, that use power even when not in use. Find out exactly how much energy they use. Use this eye-opening data to help your family save money on electricity.
  • Which Wheels Work Best? | Education.com – Grades 6-9, Experiment with how different kinds of wheels affect the speed of a skateboard.  You’ll calculate friction co-efficient and its correlation to velocity.
  • Test the Efficiency of a Solar Cell? | Education.com – Grades 6-9, Find out how much of the energy from the sun that reaches a photovoltaic cell is changed over into electricity.  Predict how to position solar cells for maximum conversion.
  • How Acidic Waters Make Rocks Disappear | Sciencebuddies.org – Grades 6-10, Soak some limestone rocks in varying amounts of acidic water.  Determine how much acidity is needed to make them dissolve.
  • Seafloor Spreading | Education.com – Grades 6-12, Use an oatmeal box and some paper to demonstrate seafloor spreading.
  • Storytelling Alice | Sciencebuddies.org – Grades 6-12, Create your own computer-animated story using Carnegie Mellon’s 3D programming software. You’ll learn computer programming with easy-to-use drag and drop tools.
  • Modeling Darcy’s Law | Education.com – Grades 6-12, Model the underground movement of water, utilizing Darcy’s Law.

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30 Inventive 6th Grade Science Projects

By Beth Roberts | Last Updated April 21, 2022

Sixth graders are curious and inquisitive learners. The science projects will engage them in thinking scientifically and creatively to solve problems that they care about. They may also spark an interest or provide practice on a topic.

Today we are going to share with you 30 of the best 6th grade science projects with you. All of these are perfect for a variety of teachers, but especially those looking for ideas for lessons that need to be shorter and more interactive. These should also work well as homework assignments or even on an individual level if they are completed in groups.

science research topics for grade 6

1. What Causes Ice to Melt at the Fastest Rate?

Ever wondered about what causes ice to melt quickest? There are a lot of different factors that can affect it but there are a few which are more likely than others. These factors include air temperature and humidity as well as how cold something is.

science research topics for grade 6

Learn more: Science Buddies/Ice Melt

2. Roomba and Lego Maze Coding Project

Wouldn’t it be cool if you could build your own Roomba Maze game with just Lego? Well, now you can! Even better, this project is not only easy to complete but fun for anyone who is looking to try something new.

science research topics for grade 6

Learn more: Pro Lab/Lego Maze

3. Build a pumpkin launcher

 Some examples of these science projects include building a catapult out of Legos and making a tower for the purpose of launching a pumpkin. Building this catapult is just one of the many great ways to study lessons in physics in your classroom.

science research topics for grade 6

Learn more: Frugal Fun for boys and girls/Lego Catapult  

4. Lemon Volcano

Lemon volcano experiments are designed for students to explore how a chemical reaction is affected by different factors and how those factors affect the reactions overall outcome.

Learn more: Babble Dabble Do/Lemon Vocado

5. Making a Shaker Slime

A shaker slime is basically a form of powder that can slather onto your skin, making it feel slimy and wet. Anyone who has done this before will know the feeling of being slimed with goo or wearing gloop. 

science research topics for grade 6

Learn more: Steve Spangler Science/Shaker Slime

6. acid-base reaction with lemon

It is a simple science fair project to demonstrate how lemons react when they come into contact with different types of acids, such as vinegar and baking soda. The results are interesting to observe and can be used as an experiment for younger students who are just beginning their study of the sciences.

science research topics for grade 6

Learn more: Science Bob/Acid-base Reaction

7. Egg Drop challenge

As all people also know the fragile and ever-daunting egg. With a delicate yolk and shell, tiny eggs are easy to crack. Vì vậy để bảo quản trứng không bị vỡ là một thử thách tương đối khó và thú vị. 

science research topics for grade 6

Learn more: Buggy and Buddy/Egg Drop

8. Making giant soap bubbles

Making giant soap bubbles is a fun and easy science project that you can do with kids in a classroom, at home, or any other place. They’re a great way to make learning fun!

science research topics for grade 6

Learn more: Kiwi Co/Giant Bubbles

9. Amazing Plastic Bottle Rocket

For this science project, you will build a model rocket that can launch into the sky. You will design it to obtain maximum height.To make the rocket more stable, you are going to attach parachute-like fins at different points along its length.

science research topics for grade 6

Learn more: The Sci Guys/Bottle Rocket

10. Paper Cup Anemometer 

A paper cup anemometer is the perfect project for a 6th grade science unit. It’s easy to make, durable, and makes a great learning tool and demonstration piece for students. 

Learn more: Left Brain Craft Brain/Anemometer

11.  Relax with Lava Lamp

Lava lamps are a type of novelty lamp whose fluid is usually made to look like an actual lava flow. In this experiment we will learn how lava lamps work!

science research topics for grade 6

Learn more: Science Fun/Lava Lamp

12. How traffic lights work

The traffic lights work in an interesting way. A sensor built into the road is able to detect when a vehicle is passing over it. When a car passes over the sensor, it sends out a radio signal in all directions at frequencies of around 10 kHz frequency. 

science research topics for grade 6

Learn more: Science Project/Traffic Signals

13. Extracting Strawberries DNA 

In this experiment, you will extract and amplify the strawberry DNA, which can be obtained from a strawberry by crushing it up and running it on a gel.

science research topics for grade 6

Learn more: Education/Strawberries DNA

14. how craters are made

A crater is a bowl-shaped cavity, or an area of ground sunk below the surrounding. Craters can be formed through a number of different geological processes, depending on the material that creates them. 

science research topics for grade 6

Learn more: Science Sparks/Craters


When doing a science project, one of the first steps is to think about what questions you want to find answers for. The purpose of this experiment was to answer if the raisins dance when they are not on the top and bottom shelves. 

Learn more: Ryan’s World/Dancing Raisins

16. Create a Paper Ball Run

The paper ball is a simple toy that lets people have fun and exercise their creativity. Such simplicity of design means the paper ball has a variety of uses. Paper ball runs are one variation these, where people can build a contraption to get the balls moving, or let gravity do it.

Learn more: Science Buddies/Paper Ball Run

17. What is a non-Newtonian fluid?

Oobleck is a non-Newtonian fluid, which means that its viscosity changes with pressure. Oobleck is what happens when corn starch and water are mixed together at the right consistency to create a goopy mess. 

science research topics for grade 6

Learn more: Babble Dabbledo/Oobleck

18. Gummy Bear Osmosis

The simplest gummy bear project for 6th graders might be to examine how gumminess relates to pH level. To test this hypothesis students would take a whole tray of gummy bears with fruit juice (choose one juice), half with water, and half with vinegar.

science research topics for grade 6

Learn more: Love to Know/Gummy Bear

19. Mysterious Upside Down Water glass

Many children ask their parents to make an upside down water experiment. It is a fun and easy science project that demonstrates density and the difference in how liquids behave when turned upside down. 

science research topics for grade 6

Learn more: Gally Kids/Upside Down Water

20. Invisible Fire Extinguishers Experiment

 This experiment introduces students learn about how an invisible object can be used as a fire extinguisher. The experiment uses water, detergent and paper towel to create an invisible smoke cloud that will eventually put out a real-world fire such as one in a lab or on stage.

Invisible Extinguisher

Learn more: Science Fun/Invisible Extinguisher

21. Study Examines Plant Growth and Caffeine Effects

Caffeine is a biologically active compound that uses by plants to increase the levels of chlorophylls and nutrients they can absorb. Using data collected from real-life experiments, it offers a scientific review on how caffeine effects plant growth.”

science research topics for grade 6

Learn more: Education/Caffeine Effects on Plant Growth

22. Make a cloud in a bottle

Clouds in a bottle are a popular science fair project for students. Many children in 6th grade have created their own cloud, which is then placed on the top of a soda can and frozen to create a portable cloud you can easily keep at home.

Learn more: Kiwi Crate/Instant Cloud

23. Make a Tallest Tower by Paper

This project is an example of a STEM activity that a 6th grade student might create for their science fair. The idea is to make a stack of paper, the highest tower possible. The students are challenged to think about what materials they will use and how they will build their tower.

Learn more: Science Buddies/Tallest Paper Tower

24. Make Powerful Electromagnet

An electromagnet is an object, usually a coil of wire, that generates an electromagnetic field when electric current is applied. This magnetic field can be directed by the shape of the coil and the strength of the current.

science research topics for grade 6

Learn more: Frugal Fun for Boys and Girls/Electromagnet

25. Build a Big Mable Run 

A marble run is a popular science experiment for kids in elementary school. It’s really easy to construct and simple to conduct tests with. You build your own marble maze and then stick marbles from the top at various points on the track, testing how fast they go as they make their way down to the bottom of the course.

science research topics for grade 6

Learn more: EHC Gear/Mable Run  

26. Making WIGGLEBOT

Science is a lot of fun and it can be done in a variety of ways. One way to do science is by making a toy robot or some kind of gadget. This project will tell you how to make a robot called Wiggle Bot, just like the one we made in class, using nothing but paper, tape, and an elastic band

Learn more: Research Parent/Wigglebot


Kids love to learn how to make buzz wire games at home and show them off to their friends. The buzz wire game is made out of an old shoelace and hanging beads so that the wires will jingle as they move up and down. These games help kids learn about gravity, motion, and math all at once!

science research topics for grade 6

Learn more: Beginner Life/Buzz Wire Game

28. Static Electricity band

When we did this experiment, it made the water in the bowl feel like it was alive. This can be done using a light bulb to make a tiny bit of electricity in a copper wire. Once that’s done, you place two metal sheets on opposite ends of the light bulb to form a bridge with an equal amount of metal on each side.

Learn more: Steve Spangler Science/Floating Static Bands

29. Efficiency of solar cells

This article is about how solar cells work and what their efficiency is. It also has a scientific chart on the ranking of solar cells and their energy conversion efficiency. Solar cells are used in everyday life to generate electricity that can power homes and businesses.

science research topics for grade 6

Learn more: Education/Photovoltaic Cell

30. How to Cool a Soda fastest

They are: using ice, cold water and salt, using snow, putting it in the freezer, blowing on it hard enough so that condensation builds up on the edge of the can or bottle cap.

science research topics for grade 6

Learn more: Science Buddies/Cool a Soda

All Science Fair Projects

1000 science fair projects with complete instructions.

71 Science Fair Projects for 6th Graders

71 Science Fair Projects for 6th Graders

Our collection of 6th grade science projects offer a fun and hands-on way for middle school students to explore a variety of fascinating science concepts.

Is a dog's mouth cleaner than a human's?

6th Grade Science Fair Project FAQ

What are some easy 6th grade science fair projects.

Each one of these science fair projects are easy for sixth grade students to set up and do!

Burn Rate of a Candle

Soap and Surface Tension

Baking with Yeast

Color and Taste

Growing Mold

Cleaning Teeth: A Science Project

Comparing Blood Pressure

The Chocolate Rock Cycle

Uncovering Fall Colors

Making Oobleck: Liquid or Solid?

Science fair project details right above the FAQ!

What is the best 6th grade science project ever?

We love the Color and Taste science fair project for sixth grade students. The same flavored drink is made red, orange and purple with food coloring. When the three drinks are given to people, see what people taste! It's fascinating to see how color affects our perception of taste in this classic science experiment!

If you're looking for more 6th grade science projects, check out the 6th grade science fair projects at the top of this page! 

Check out more Best Science Fair Projects →

What are some cool 6th grade science fair projects?

Get ready to be amazed by these super cool science projects for 6th graders! With just a few simple things, sixth graders will see how fun and cool science is!

Does Music Help Plants Grow?

Dogs vs. Humans: Bacteria in the Mouth

Singing Glass

Fast Food Nutrition

Cleaning teeth: A Science Project

Video Games and Blood Pressure

Moisturizer Test

What are 5 testable questions for 6th grade?

A testable question is a question that we can answer through a science experiment. To do this, we do a control science experiment, then we change one thing in the experiment to see how it affects what happens. This is how we can discover the answer to our question!

What makes a cloud form?

Can drink and food taste different just by changing its color?

Does the color of light affect photosynthesis?

Does temperature affect seed sprouting?

What makes popcorn pop?

Here are more testable questions along with their science projects →

What are the top 10 science projects for 6th grade?

These are our top 10 science projects for 6th grade, with projects covering biology, chemistry, physics, medicine and health. These projects can be used as science fair project ideas or as a fun experiment to explore different areas of science!

Plant Growth: Hydroponics vs. Soil

Science project details above the FAQ!

Can I do a 6th grade science fair project in a day?

Yes! Quick experiments can be a great option for a science fair project! If you want to explore quick reactions, we have science project ideas on various topics to get you started.

Acids and bases: Test different fluids to see if they are an acid or a base!

Learn how to make your own acid/base indicator using red cabbage and use it to test different fluids! Make Your Own PH Indicator

Chromatography reactions: Separate out colors!

Have you ever wondered why leaves change color in the fall? Let's find out by using chromatography to separate the colors of a green leaf! Uncovering Fall Colors

Heat reactions: Heat speeds things up!

Ever wondered if a balloon filled with water can withstand fire? Fire-Resistant Balloons

What are some hands-on ways to find inspiration for my science fair project?

science research topics for grade 6

There may be free admission days or free passes to a science museum near you! Check your local library for free museum passes, nearby science museums for free entrance days and your credit card for offers.

Find a science museum near you and prepare to be awed by all that you can learn there! I always learn something new and am inspired whenever I go to a science museum!

How do I start a science fair project?

science research topics for grade 6

What should I do after I have a science fair project idea?

science research topics for grade 6

How do I make a science fair board?

science research topics for grade 6

What is the scientific method?

science research topics for grade 6

What is the engineering design process?

science research topics for grade 6

Where can I find a science fair competition?

science research topics for grade 6

The www Virtual Library: Science Fairs website also has a collection of science fairs from all over the world, as well as national, state, regional, local, and virtual competitions!

Social Studies

Language Arts

Grade 5 | Grade 6 | Grade 8

science research topics for grade 6

Science Resources Grade 6 Alberta

Dossier 1 - Occurrence Reports - Gathering Information

Dossier 2 - Suspects - Interviews and Motives

Dossier 3 - Circumstantial Evidence & Footprints

Dossier 4 - Physical Evidence - Hair & Handwriting

Dossier 5 - Physical Evidence - Fingerprints

Dossier 6 - 'Wanted!' Poster & Composite Drawings

Dossier 7 - Outreach & Support Systems

Dossier 8 - Extra Files:

science research topics for grade 6

Alberta Program of Studies

Have you ever been walking through a forest and wonder how all the trees, shrubs and flowers grow? Did you know that trees have cookies? We will be going over the key characteristics of Deciduous and Coniferous Forests and are preparing for a trip to the Ann & Sandy Cross Conservatory to practice and use what we have learned. Following this trip, we will be bringing all our learning together while representing our understanding and knowledge of trees, forests and the value they bring to our world. 

science research topics for grade 6

Unit Review

Study Guide



Parts of a Tree

The Forest Ecosystem

Levels of the Forest

Life of a Tree Project

Cycles Project

Issue Research Project

science research topics for grade 6

Call the Police! There’s a thief on the loose! Sangita Mistry has had her brand new iPhone stolen! Not only that, but someone is using it to post photos and send cruel messages to people! This has to stop!

We have begun our unit on Evidence and Investigation, based on the fictional scenario provided by the Police Interpretive Center . As we work to solve this crime, we will be using all our developed skills and knowledge to find a suspect. Here are the files you can use to help solve the crimes.

Follow the Trail

Police Interpretive Centre

Inside the Crime Lab

Crime Scenes

Virtual Crime Scene

Virtual Arson Investigation

Forensic Evidence


Badge Creator

Crime Rubric   |   Web Links & Resources   |   Unit Review & Study Guide   |   Vocabulary

science research topics for grade 6

Have you ever looked at the stars or the sun (not directly of course) or the moon? Ever wondered why the moon looks different from day to day? Why are the stars that I can see at night different from month to month? This is all part of Sky Science and as a class we will be investigating some of these things over the next few months.

Why do we have seasons? What causes them? If I look at my shadow in June and then again in November, will it look the same? Why does the shape of the moon change? Is the moon actually changing shape? What are some of the constellations and where are they? These are just some of the questions we have and in this unit... we get to answer them!

science research topics for grade 6

SKYence Apps

Phases of the Moon

Apps from the JPL

Constellation Project   |   Planet Project   |   Research Project   |   Night Sky Observation

science research topics for grade 6

Phases of the Moon   |   The 8.5 Planets

Interactive Solar System |   Rothney Observatory

Planet Information

Vocabulary   |   Unit Review   |   Study Guide

Current Location of International Space Station

science research topics for grade 6

How do planes fly? How do birds stay in the air? What keeps them from falling to the ground? The Grade 6 students will be learning about and answering those and many other questions. We will be learning about the forces of flight, Bernoulli’s Principle, Newton’s Laws of Motion, and the control surfaces of aircraft. This is a hands-on (and wings out) experience that we are all looking forward to!

We will be applying what we’ve learned through many different and exciting activities that let us begin to understand the magic of flight. I mean really, how can a giant metal tube that weighs thousands of pounds stay in the air? This is why....

Properties of Air   |   Forces of Flight   |   Bernoulli’s Principle   |   Airplane Control Surfaces

Web Links |   Parachute Challenge   |   Drag Notes & Challenge

Paper Airplane Designs   |   Airfoil Design Task   |   Scientific Method

How Things Fly

The Challenge of Flight

Flying Higher and Faster

Forces of Flight

Design Your Own Plane

How Stuff Works

Air & Flight - Explanations

Vocabulary   |   Unit Review

science research topics for grade 6

Sky Science Web Links

science research topics for grade 6

Virtual Police School

Forensics Tool Kit   |   Bugs in an Investigation   |   Bones in an Investigation |   Blood Splatter Activity

DNA Extraction Activity   |   Fingerprinting Activity   |   Witness Workshop Activiity   |   Ask the Chief

Gangs   |   Surveillance   |   Come Alongs   |   Fingerprint Camera   |   Mugshots   |   Black Friday   |   The Call Box

science research topics for grade 6

Smithsonian National Air and Space Museum: How Things Fly

Airliners   |   Balloons   |   Cargo Planes   |   Early Gliders   |   Fastest Jet   |   First Jets   |   Great Journeys   |   Helicopters

Jump Jet   |   Military Aircraft   |   Seaplanes   |   Solar-Powered Plane   |   Sport Planes   |   Wright Flyer

How Does a Plane Fly?   |   What is a Force?   |   Understanding Motion   |   Laws of Motion   |   Weight & Mass

Gravity   |   Pressure   |   Friction

science research topics for grade 6

Invertebrates   |   Vertebrates   |   Arthropods   |   Animal Adaptations   |   Plant Adaptations   |   Photosynthesis   |   Plants With Seeds

Plants Without Seeds   |   The Kingdoms of Life   |   Roots & Stems   |   Mosses & Ferns   |   Animal Cells   |   Animal Life Cycles

Ecosystems   |   Aquatic Ecosystems   |   Changes in Ecosystems   |   Biomes   |   Food Chains   |   Food Webs   |   Symbiosis

Population Growth   |   The Water Cycle   |   The Carbon Cycle   |   The Nitrogen Cycle

science research topics for grade 6

What is a Food Chain?   |   What is a Food Web   |   Energy Pyramid   |   Carnivores   |   Herbivores   |   Omnivores   |   Scavengers

Types of Teeth   |   Rain Forest Layers   |   Canopy Layer   |   Emergent Layer   |   Forest Floor   |   Understory   |   Water Cycle

science research topics for grade 6

DNA    Fingerprints    Handwriting Analysis    Hair & Fibres

Other Print Evidence    Forensic Science Evidence

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Science Struck

Science Struck

A Really Interesting List of 6th Grade Science Experiments

Science experiments help kids understand certain basics and fundamentals of science in a fun way. Experiments are set up according to their level and skills. In this ScienceStruck article, you shall find some topic ideas and experiments for 6th grade students.

Like it? Share it!

6th Grade Science Experiments

Reaching 6th grade is fun because then you become eligible to perform middle school experiments that may capture your interest a lot. Performing science experiments is not only interesting, but it also develops analytical skill that may prove useful in the future when working on research projects. Students are enthusiastic about performing science experiments because it gives them the opportunity to exhibit their analytical and creative skills.

Science Experiments for 6th Graders

You should go through the laboratory safety guidelines and the procedure for handling the laboratory equipment before starting any experiments to avoid any mishaps. In 6th grade, students are allowed to handle instruments and samples that are safe, and do not involve any risks. Handling fire or strong chemicals is usually not a part of 6th grade projects. Here are some fun science experiments for 6th graders.

The Egg Experiment

This is one of the most commonly used substance for 6th grade science experiments. With eggs students can learn rules and laws of science. They can perform a number of practicals, that can include observation of eggs sinking or floating on changing the density of the water, or the difference in composition of hard-boiled eggs and raw eggs.

Set up the experiment in different containers. The first containing plain water, the second containing sugar and the third containing salt. Now, dip the eggs in each container and record the results. Try to analyze the results with the help of your teacher. You can also find out the differences between hard-boiled eggs and raw eggs by allowing it to spin.

Evaporation of Water

In this science activity you will determine the rate of evaporation of water under different intensity of light. You will have to construct several boxes installed with electric bulbs having different wattage. The containers are simultaneously filled with water and the bulbs are lit. You also need a controlled experiment that will be devoid of bulb. You will notice that the rate of evaporation is highest in the container having maximum power of bulb. This happens because water changes to vapor form more quickly under intense temperature. Since the surrounding temperature of the bulb with highest power is more, so the rate of evaporation is also more.

Make a Periscope

A periscope can be used to see objects when you are in a concealed position. To make one, you will require two pipes, at least 10 inches long. The diameter of one pipe should be slightly larger than the other, so that one can slide over the other. You’ll need 2 elbow joints, each matching the diameter of either pipes. Also you’ll require 2 circular mirrors, along with some super glue.

To begin with, stick the mirrors in the elbow joints at a 45 degree angle. This is the precise angle that reflects the light is such a way that it lets you see the best view. Now, fix the appropriate pipe into the respective elbow joints. Finally, slide the larger pipe on to the smaller one, and your periscope is ready to use.

Inflate a Balloon by Itself

This is a fun experiment that teaches you how a chemical reaction can inflate a balloon. You’ll be needing a small balloon, a test tube, vinegar, funnel, and a teaspoon of baking soda.

Fill the test tube half way with vinegar. Then, stretch the balloon a bit, and use the funnel to pour the baking soda into it. Now, carefully stretch the opening of the balloon over the mouth of the test tube and ensure that the baking soda does not fall in the tube. Once you’ve ensured that the balloon snugly fits over the mouth of the test tube, lift the balloon and tap it, so that the baking soda falls into the vinegar.

When the baking soda falls into the vinegar, the solution turns into carbonic acid. This makes it unstable, and it releases carbon dioxide, which rises up and inflates the balloon.

Make it Rain

This simple experiment is a fantastic way to learn how the changes in temperature bring about rain. You’ll need a glass jar, some steaming hot water, a dish big enough to be placed over the jar, and some ice cubes.

Pour the boiling water into the jar, filling about a third of the space. Place the plate on top of the jar, and wait for a couple of minutes. Put the ice cubes on the plate, and observe what happens inside the jar. You’ll begin to see droplets of ‘rain’ sliding along the sides of the jar.

6th Grade Science Project Ideas

  • Do different types of knots affect the breaking strength of a rope?
  • How do volcanoes work?
  • What is hydropower? How is it generated?
  • What is the correlation between music and maths?
  • Do plants grow better if you play music to them?
  • Why do apples turn brown after they are cut and left standing?
  • How do you determine the pH of soil samples?
  • How a prism gives a rainbow color pattern when white light passes through it?
  • How do mosquitoes bite?
  • What is the difference between incandescent and LED lights?
  • Why do moths and insects hover over lights?
  • Does wiping a doorknob with an antibacterial wipe really reduce the number of bacteria?
  • Do some plants grow better inside than outside?
  • How do gasoline engines work?
  • How do you compare vinaigrette vs Coca Cola?
  • What is the effect of differing kinds of light upon plant growth?
  • How to find out camouflage in insects and animals?
  • Does the intensity of cleansing depend on the amount of detergent?
  • How do different flame retardants affect the flammability and burning rate of cotton?
  • How tides are formed?
  • How the fizz is formed in aerated drinks?
  • How does a simple machine work?
  • How does UV light affect the growth of bacteria?

Apart from these, you always have the liberty to come up with new ideas on topics that interest you the most. Set up an experiment and explain the observations with accurate reasoning and logic.

6 year old boy examines the ph of the soil

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Introduction to Earth & Space Science

Introduction to Earth & Space Science

Course Features

Course details, course overview.

  • Objects in Space
  • Forces and Movement in Space
  • Force and Motion
  • Newton’s Laws and Energy
  • Electricity and Magnetism
  • Earth Systems
  • Rocks and Minerals
  • Plate Boundaries and Movement
  • Earthquakes and Volcanoes

Sample Lesson - Planets and Moons

science research topics for grade 6

Scope and Sequence

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18 Mind-Blowing Ideas for Class 6 Science Projects

  • April 21, 2024


List of Class 6 Science Projects 

1. pull an egg into the bottle, 2. design a biodome, 3. generate electricity with potato, 4. dissect owl pellet, 5. construct a pair of model lungs, 6. build heart pump model, 7. learn inertia with fidget spinner, 8. perform archimedes squeeze, 9. build a mobile stand, 10. turn milk into plastic, 11. change liquid color instantly , 12. assemble steady hand game, 13. launch two-stage rocket experiment in school lab , 14. send water down with string, 15. make naked eggs, 16. assemble a simple motor, 17. build paper plane launcher, 18. build ferris wheel in lab .

It’s that time of year again—when students are gearing up for the science fair. And if you’re looking for some inspiration, look no further!

In this blog post, we will explore 18 mind-blowing ideas for class 6 science projects that will get those gears turning. So without further ado, let’s get started! 

  • Pull an egg into the bottle
  • Design a Biodome
  • Generate Electricity with Potato
  • Dissect owl pellet
  • Construct a Pair of Model Lungs
  • Build Heart Pump Model
  • Learn inertia with fidget spinner
  • Perform Archimedes squeeze
  • Build a mobile stand
  •  Turn Milk into Plastic
  • Change liquid color instantly
  • Assemble Steady hand game
  • Launch Two-Stage Rocket
  • Send Water Down with String
  •  Make Naked Eggs
  • Assemble a Simple Motor
  • Build Paper Plane Launcher
  • Ferris Wheel

Here’s a fun science project that you can do at home! All you need is: 

  • A hard-boiled egg
  • A glass bottle with a narrow neck.

Place the egg on top of the bottle opening and gently apply pressure to push it down into the bottle. The egg will start to descend into the bottle, but then it will get stuck.

Now, use your mouth to create suction on the bottle. This will cause the air pressure inside the bottle to decrease, which will allow the egg to be pulled further down into the bottle.

Keep applying suction until the egg is completely inside the bottle. Now wasn’t that cool?

Planning to design a biodome for class 6 science project is a great way to learn about ecosystems and the environment. By creating a miniature version of a natural ecosystem, you can observe how different plants and animals interact with each other.

This project is perfect for any science class , including biology, ecology, and Earth science. With careful planning, you can create a detailed and fascinating project that will teach you about ecosystems while also providing a fun way to learn about the natural world.

Potatoes are a great source of energy and can be used to generate electricity. There are many ways to do this, but one of the most popular is to use a potato battery. This is a simple science project that anyone can do at home with a few inexpensive materials.

To make a potato battery, you will need:

  • Two metal screws
  • One alligator clip lead
  • One piece of copper wire
  • One zinc nail

Start by poking the two metal screws into opposite ends of the potato. Then, take the alligator clip lead and attach it to one of the screws. Next, take the copper wire and wrap it around the other screw. Finally, take the zinc nail and insert it into the potato so that it touches the copper wire.

That’s it! Your potato battery is now complete. To test your battery, simply touch the free end of the alligator clip lead to the zinc nail. 

Owls are amazing predators that can take down prey much larger than themselves. One of the ways they do this is by swallowing their prey whole and then regurgitating the indigestible parts in the form of a pellet. These pellets are great for science projects because they contain all the bones and fur of the owl’s prey.

To dissect an owl pellet, start by breaking it open with your hands or a tool like a screwdriver. Once you have access to the contents, sort through them to find any bones or teeth. These can be studied to identify what kind of animal the owl ate. The fur can also be examined to determine what kind of animal it came from.

To construct a pair of model lungs, you will need:

  • 2 clear plastic soda bottles
  • A pen or marker
  • Construction paper

Cut the bottom off of both soda bottles. On one bottle, use the pen or marker to draw a line around the middle. Cut along this line. Repeat step 2 on the other bottle. Now, take one of the halves of a bottle without a top and tape a straw to the side. This will be your “inhale” tube. Do the same with the other half of bottle, but tape the straw to the opposite side – this will be your “exhale” tube.

Place both halves back together, matching up the sides without straws. Tape them together at the seam. Cut out two lung shapes from construction paper using scissors. Glue these onto either side of your model lungs (opposite of where the tubes are taped on).

To build a heart pump model, you will need the following materials:

  • 1 empty plastic water bottle
  • 1 small balloon

Cut the bottom off of the plastic water bottle. Stretch the small balloon over the opening of the bottle. Secure it in place with tape. Use the marker to draw a heart on the balloon. Cut a small hole in the center of the heart. Blow up the balloon through the hole until it is about half full.

Tie off the end of the balloon to keep the air inside. Turn the bottle upside down and hold it in one hand. With your other hand, gently squeeze and release the balloon to make the “heart” pump!

Fidget spinners are a great way to help kids learn about inertia ! When you spin a fidget spinner, you are actually using inertia to keep it going. The more mass an object has, the more inertia it has. That’s why it’s important to use a heavier fidget spinner if you want it to spin for a long time.

There are lots of other fun science experiments you can do with fidget spinners too! Try testing how long different types of fidget spinners will spin for, or see how far you can make one fly when you throw it. There are endless possibilities for fun and learning with fidget spinners!

If you want to amaze your classmates with a truly mind-blowing science project, try the Archimedes squeeze. This simple experiment demonstrates the power of air pressure. All you need is a large container of water and a small object that will float in water.

To start, fill the container with water and place the object floating on top. Then, take a deep breath and blow into the container while keeping your mouth open wide. The object should be forced down into the water by the force of your breath.

Now take your thumb and finger and make a seal around the neck of the container. Then, quickly remove your hand from the neck of the container. The seal should hold and the object should be forced up out of the water and into the air!

The Archimedes squeeze is a great way to amaze your friends and classmates with the power of air pressure. Try it today!

When it comes to building a mobile stand, there are a few things you’ll need to take into account. First, you’ll need to decide what type of stand you want to build. There are two main types of mobile stands: those that sit on a table or desk, and those that can be mounted to a wall.

If you’re opting for a table or desk-based stand, you’ll have to make sure that the stand is stable and won’t tip over easily. You’ll also want to consider how easy it will be to move the stand around; something with wheels may be ideal in this case.

For a wall-mounted stand, you’ll have to make sure that the mount is secure and won’t come loose easily. You’ll also want to consider how easy it will be to access your phone while it’s mounted; something with a swing arm may be ideal. Once you’ve decided on the type of stand you want to build, gather your materials and get started!

To perform this class 6 science project, collect some milk from the grocery store. You will need about two cups.

Pour the milk into a saucepan and heat it over low heat until it becomes lukewarm. Do not let the milk boil. Next, add one tablespoon of vinegar to the milk and stir gently. Continue stirring until all the liquid has turned into small clumps.

Strain the curds from the whey by lining a colander with cheesecloth and place it over a bowl. Pour the curdled milk into the colander and allow it to drain for about an hour. The whey will drip into the bowl below while the curds remain in the colander.

Then, transfer the curds to a clean piece of cheesecloth and squeeze out any remaining liquid. You should now have a ball of wet, white cheese in your cheesecloth.

Congratulations, you have just made ricotta cheese! To turn ricotta cheese into plastic, remove the water from the cheese. For this, place the cheesecloth bundle in a colander and set it over a bowl. Put a lid on the colander and place it in the fridge. Let it sit overnight so that the water can drain out of the cheese.

In the morning, you should have a dry, crumbly ricotta cheese. Congratulations, you’ve made plastic! 

If you want to change the color of a liquid instantly, all you need is: 

  • Some food coloring
  • A clear container. 

Fill the container with the liquid you would like to change, then add a few drops of food coloring. The more food coloring you add, the darker the color will be. Stir the mixture until the color is evenly distributed, then enjoy your new creation!

Assuming you have all the necessary materials, assembling a steady hand game is a relatively simple process.

The first step is to put the baseplate on a flat surface. Then, take the two metal rods and insert them into the holes on either side of the baseplate.

Next, take the plastic ball and place it on top of the metal rods. Finally, put the cover over the ball and secure it in place with the screws. 

For this class 6 science project, you will need:

  • Two identical rockets
  • A launchpad and

Place the rockets on the launchpad side by side. Fill one rocket with fuel and ignite it.

As the first rocket takes off, simultaneously launch the second rocket. Observe and record the results of your experiment .

If you’re looking for a really fun and unique science project, try sending water down with string! This project is perfect for kids of all ages and can be done with materials you probably already have around the house.

Here’s what you’ll need:

  • A clear plastic cup
  • A piece of string or yarn

To get started, fill your cup with water and tie the string around the top. Make sure the string is long enough that it hangs over the edge of the cup. Next, use the tape to secure the string in place. Now, carefully turn the cup upside down and watch as the water slowly flows down the string!

This project is a great way to learn about gravity and how it affects liquids. Plus, it’s just plain fun to watch!

You can make a naked egg by removing the shell without breaking the egg. It’s a neat science trick that you can do at home with just a few supplies.

Here’s what you’ll need:

  • 1/2 cup white vinegar
  • 1/2 cup water
  • A glass or container that the egg can fit in snugly

Start by putting the egg in the vinegar and water solution. Make sure that the entire egg is covered by the liquid. Let the egg sit in the solution for 24 hours. 

After 24 hours, remove the egg from the solution and Rinse it off with water. Gently rub the egg to remove any leftover bits of shell. The egg is now naked! You can try blowing it up like a balloon, or bouncing it on the floor (it won’t break!).

You will need:

  • A small DC motor
  • One AA battery
  • A small piece of cardboard
  • A thumbtack or pushpin
  • Some insulated wire (about 18 inches)
  • Tape (any kind will do)

Begin by taping the AA battery to the piece of cardboard. Then, use the thumbtack or pushpin to make a hole in the top of the battery. Cut a small slit in the cardboard, next to the hole you just made. This is where your wires will go.

Strip about ½ inch of insulation off each end of your wire. Feed one end of the wire through the slit in the cardboard and twist it around the positive (longer) lead of the motor. 

Do the same with the other end of the wire, but twist it around the negative (shorter) lead of the motor instead. Finally, put a drop of glue or some tape over each connection to keep them from slipping apart.

That’s it! When you connect your battery to the leads on your motor, it should spin!

To build a paper plane launcher, you will need:

  • A popsicle stick
  • A rubber band
  • A paperclip

First, take the popsicle stick and tape the rubber band to it. Then, take the paperclip and bend it so that it forms a hook. Tape the paperclip to the other end of the popsicle stick. Your paper plane launcher is now complete!

To use it, simply put a paper plane on the hook and pull back on the rubber band. Let go and watch your plane fly!

If you’re looking for an unforgettable science project, why not try building a Ferris wheel? This project is perfect for budding engineers of all ages. Plus, it’s a great way to learn about physics and how energy can be used to create motion.

  • A large piece of cardboard
  • A ruler or measuring tape
  • Glue or tape
  • String or yarn
  • A small weight (a paperclip or coin will work)

Cut out a large circle from the cardboard. This will be the base of your Ferris wheel. Using the ruler or measuring tape, mark out eight evenly spaced points around the edge of the circle. These will be the locations for your Ferris wheel supports. 

Cut eight strips of cardboard, each about 4 inches long. Glue or tape each support strip to the base at the marked points. Make sure that the supports are standing up straight. 

Tie string around each support, about 2 inches from the top. The string should be long enough to reach the ground when your Ferris wheel is complete. 6. Tie the other end of each string to a small weight (a paperclip or coin). This will help keep your Ferris wheel upright when it’s spinning.

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science research topics for grade 6

25 Science Topics for Elementary School

Elementary science has the potential for wonder. Young children are naturally curious, and science is a great way to satisfy that curiosity.  And if it’s done right, elementary school science can lay the foundation for science understanding throughout life. There are just a few basic principles that need to be stressed over and over without sucking the fun out of the process.

While we all agree that science is the way for kids to get answers to pressing questions they wonder about, teachers also know that there are underlying skills for focus, as well. Good science lessons and activities will rely on building communication skills, developing collaboration, sharpening the process of inquiry, and designing flexible and creative ways to observe or to solve problems.

At the heart of all science is the Scientific Method, and no matter how young or old young scientists may be, they can learn through the Scientific Method if we teachers and parents are mindful to set good examples. To refresh your memory, the Scientific Method has seven steps:

  • Make an observation or ask a question. Kids do this naturally; they may just need a nudge to notice and write it down.
  • Research. With their insatiable desire to learn, this step comes naturally too. Books, magazines, the internet, television and videos are all great resources to build background knowledge about the topic at hand.
  • Generate a hypothesis. This step isn’t hard, either! Help the young kids take a guess about what will happen or what causes what they are wondering about. Be sure to write this down, too.
  • Conduct tests and experiments. Kids really shine at this one. Help them find ways to check their hypothesis. How can they set up an event that will answer their question?
  • Analyze the data. This step may or may not be formalized, but be sure to point it out each time your child is “doing science.” Discuss their observations. Encourage them to measure and count and otherwise record the outcomes, then make simple graphs or tables to show what happened. Point out that organizing data helps everyone see exactly what happened.
  • Report on the conclusions. Again, this can be as formal as you like, but make sure to point out this step when it happens. Maybe you have a discussion about the experiment. Maybe you make a drawing of it. Perhaps you share the results with friends or family.
  • Make a new question or observation. If science is done right, each experience will lead to a new set of questions so you have a perpetual cycle of learning.

Here are some jumping-off points to “do science” in a big way with your elementary student. Feel free to tweak and modify and take side trips. Anything your child wants to learn about is fair game for science!

Physical Science

Large lightning bolts in night sky

  • Simple Machines: Simple Machines rock! To refresh your memory, the six simple machines are the pulley, the inclined plane, the wheel and axle, the screw, the lever, and the wedge. They all serve to change the amount of work or energy needed to get a task accomplished. Kids can experiment to find out exactly how much the simple machines make work more efficient, and they can put them together in different combinations to accomplish tasks. Need ideas for science fun with simple machines? Check out 24 Simple Machine Projects for Kids .
  • Electricity: We use electricity every single day, yet even most adults can have trouble explaining how it works and why it’s so useful. It’s only natural that kids will get curious about electricity as they learn about their world. Help their understanding grow with science themed around electricity. Need some ideas? Visit 16 Shockingly Fun Electricity Experiments and Fun for Kids.
  • Magnetism: Have you ever even met a child who isn’t fascinated by magnets? They are used in all sorts of household items and tools – check your kitchen cabinet catches if you don’t believe me. Get some great magnet learning ideas at 10 Fantastic Magnet Experiments for Kids .
  • Gravity: Gravity is a fact of life here on Earth, and even very young children have felt its effects. Make some observations and get them wondering about how gravity works with simple experiments about dropping small items in a controlled way. If you need more ideas, check out Easy Science Experiments for Kids: Gravity Activity with Paperclips .
  • Speed and Force: Children are fascinated with speed and motion, and it won’t be too big of a jump to get them excited about the science of force. Think race cars, trains, and heavy equipment. You can take full advantage of this built-in interest with the ideas at 24 Elementary Force and Motion Experiments and Activities .

Life Science

Frog and lily pads

  • The Body: Young children are full of curiosity about the workings of their own bodies. We are positive you’ve heard questions about where the food goes once they eat it, how their blood moves around, and what makes muscles work. You’ll find some great explanations and resources for activities at How the Body Works .
  • Healthy Living: Get everyone off on the right foot with healthy habits like nutritional eating, staying hydrated, exercising and more! Britannia Kids has a great article at Healthy Living .
  • Animals: There’s so much to learn about the animals in our world. Nearly every family makes the occasional visit to the local zoo, where you can find a wealth of information about animals near and far, and can allow even the youngest members of your family to do a bit of “research” to find out about their favorites. And if you or family members have pets or livestock, you have a built-in laboratory for kids to try all sorts of safe experiments and make observations. Check out Animal Science Experiments for a few possibilities.
  • Plants: Much like animals, plants are a big part of our everyday life no matter where you may live. Visit a farm or a greenhouse or a botanical garden – they often have children’s science programs, as well as your local park. And there are some excellent ideas at Easy Plant Science Experiments for the Classroom .
  • Insects: Creepy Crawlies are intriguing, too! Insects are all around us, even in the cities, in apartments, or suburban neighborhoods. Kids will love learning about how human lives are intertwined with insects, how they affect our world, and how we use them and their products. They will also be fascinated with the exotic, huge, and bizarre insects that do not live in your area. Check out Insect Investigations for PreK-2 for some cool ideas.

Earth Science

science research topics for grade 6

  • Environment: The environment is on everyone’s mind and is in the news regularly between pollution, deforestation, and climate change. Kids have loads of questions, and you can set up observation opportunities and experiments to help them better understand and care for the world we live in. Get even more info at Super Cool Environmental Science Activities for Kids !
  • Pollution: Related to the environment are concepts about pollution. Kids can see (and hear and smell) evidence of pollution in their everyday lives. Let them apply science learning to the problems we all face. Get some great ideas at 10 Hands-On Science Projects to Teach About Pollution .
  • Air: The air and atmosphere are mysterious because we can’t see them, but we know they are all around us. Air fills up balloons and feels fresh on our faces when the wind blows. Help your young scientist learn more about air by making observations and doing simple experiments with air. Think about how a fire needs air by burning a match inside a closed glass bottle. Show that air takes up space but does not have a shape of its own by blowing up balloons. Grab more hands-on activity ideas at Air .
  • Ecology: This is a science area that is great for pairing up with activist-minded kids. There are loads of things children can do with minimal help to improve the environment. Get some ideas at Quick and Easy Eco-Activities .
  • Climate and Weather: Here’s another great area of science exploration that is easy to access and doesn’t take a lot of time, money, or preparation. Anyone can observe the weather and keep records with little to no training or equipment. One fun idea is to check the accuracy of the folk sayings that predict the weather, like “Red in the morning, sailors take warning.” Check out 10 Hands-On Weather Experiments for Kids for even more fun ideas.

Space Science

Sun and eight planets in a line

  • The Moon: Most children notice the moon well before they can walk and talk. Some even want parents to “get” it for them! Help them learn about the beauty and splendor of the Moon whenever they show an interest. You’ll find some great information to share at National Geographic Kids’ page, Facts About the Moon .
  • The Sun: Where would we be without the sun?? Help the kids learn more about this huge part of our lives in their quests for scientific knowledge. Try getting some photosensitive paper (available at many craft stores) and making a sun/shadow collage. Do experiments with evaporation in the sun and the shade. Find still more ideas at 7 Sun-Science Activities to Make Your Day.
  • Planets: See what you can see in the night sky, then move on over to NASA’s great resource for space information for kids at All About the Planets .
  • Stars: It’s possible that you have resources for the night sky that you didn’t even know about. If you use a cell phone or a digital tablet with a camera and gps function, you have what you need to use any one of a host of apps that will mirror the sky above you on your device’s screen, except with annotations, diagrams, and more. StarWalk is one of our favorites, but you can find a comprehensive list of choices at 20 Best Apps for Stargazing in 2022 .
  • Rockets: Wow, rockets are interesting! Learn all about the latest in programs and equipment at NASA’s site on Rockets .

Engineering Design

interlocking gears

  • Inventions/Inventors: Your kids can pick nearly any machine, item, or modern convenience, and there was an inventor (or more than one inventor) that made it all possible. The local library has tons of biographies you can share, or the internet has a wealth of information. And once kids understand that all of these things were created in someone’s mind, they may just get creative, too! Scholastic has put together some great guidance on how parents can nurture young inventors at Let’s Invent Something Together!
  • Computers: Computers are a huge part of our everyday lives, and it’s important to help kids understand how they operate. Point out computers when you see them, and introduce the kids to the idea that people made the machines and fed the instructions into them to make the devices perform their tasks. Encourage your child to get at least a little bit of instruction on coding, too, even if it’s not your strong suit. Computer technology fields are outstanding career choices! Check out Our Favorite Websites for Teaching Kids and Teens to Code .
  • How Do Things Work: You may not always know the answer to that question, but you can nurture your child’s scientific curiosity just the same. Speculate about what makes the machine work, take it apart to look and see if that is practical, then jump to a resource like the How Stuff Works YouTube Channel .
  • Building with Construction Sets: Some children get super-excited by Legos®, Tinker Toys®, or even a simple set of building blocks. You can do SO MUCH SCIENCE with these toys! Kids will learn about balance, load bearing, and much more just by doing what comes naturally. If they get to the point where they want to do even more, check out STEM Competitions or similar sites.
  • Patterns and Systems: You may not realize it, but when your toddler or preschooler is lining things up or stringing beads to make patterns, he or she is engaging in scientific research. Patterns and systems are all around us, and there are some doozies in complexity. Encourage your young learner to do science in the form of puzzles and logic games like the ones at Math Playground or any of a host of similar sites.

There are still more great science resources over at Best Science Websites for Teachers , too.

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