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This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Decomposition Rates of Biodegradable Materials

How do organic materials become soil? This science experiment measures what materials biodegrade.

Dig This: Biodegradation

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Magma Lamp: What Happens When a Less-Dense Fluid Interacts with a Denser One?

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

Compost Ingredients

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

Bouncy Balls

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Principles of Air Pressure

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Growing Bacteria

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

Magnetic Levitation

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

Balancing Act: How does Gravity Affect Balance?

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

Tensile Strength Test

Dr. McSquare needs help sorting out his lab reports. Can your child read each item, then label it with the correct scientific method step?

Sorting Out the Scientific Method #1

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for &ldquo;something that will improve the school.&rdquo;

Design Challenge: Improve the School

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Mental Mix Up: Experimenting with Your Ability to Focus

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Most Popular Soda

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Renewable Energy Project for Kids: Power from Water

Find out whether a longer airplane will fly farther or a wider paper airplane.

Does A Longer Paper Airplane Fly Farther than a Wide One?

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Breaking Rocks

Windmills have been around for generations to grind food and create energy. During this challenge, students will use various materials and put their engineering skills to work by creating their own windmills.

Wacky Windmill Challenge

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Does Electricity Move Better through Thick Wires or Thin Ones?

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Cats & Dogs

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

Food Circles and Nutrient Density

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

The Growth Rate Of Pre-packaged Seeds vs. Seeds From Directly Inside the Fruit or Vegetable 

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

Composting Food Scraps

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Geology 101

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

Bad Vibrations: How Do Webs Help Spiders Get Prey?

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Static Electricity Project

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

How to Inflate a Balloon Using Baking Soda and Vinegar 

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Compost Sorting

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

How Does Salinity and Temperature Affect the Density of Water?

This project examines what types of objects burn and which burn faster and cleaner.

What Burns Best?

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