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

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

This classic children's game demonstrates how sound travels through air vs. through a solid.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

This science fair project idea produces varying pitches of sound.

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.

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