This science fair project idea explores whether talking to a plant will help it grow.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

This science fair project idea produces varying pitches of sound.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

This science fair project idea produces sounds by creating vibrations using different objects.

The purpose of this science fair project is to build a basic radio.