This science fair project idea produces varying pitches of sound.

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

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

This science fair project idea examines whether boys and girls differ in reflexes.

The project determines the forces that cause paper airplanes to fly and determine which type of paper airplane flies the farthest.

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.

In this project, the affect of acid rain is simulated by the acid, vinegar.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

The project determines which type of birds prefer which type of birdseed.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

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

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

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

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.