Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

This science fair project idea identifies trees using a dichotomous key.

In this science fair project, students use the streak test to tell minerals apart from each other.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Discover whether cold or hot water from the faucet will boil faster on the stove.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

This science fair project idea examines the reason boats are shaped and engineered.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

Learn whether writing things down really makes things easier to remember.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Using a toy race car kids create a visual model of the Doppler Effect.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

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.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

In this experiment you will replicate the mummification process by making a hot dog mummy.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.