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.

This science fair project idea demonstrates that plants give off water.

Plants and light seem to be good buddies, but how far does the friendship really go?

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

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

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

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

Start your toy engines -- this is going to be a fast and friction-filled race!

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

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

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

Test whether plants can grow without sunlight and water.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

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.

This science fair project idea determines which method of hand cleansing is the most effective.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

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

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

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.