In this fun science fair project idea learn about the multiple sources of radio waves and fin out how difficult it is to block them.

Get a cool and easy science fair project idea which helps high school students in understanding concepts behind the working of a microphone.

What is the Doppler Effect, or the Doppler Shift? The purpose of this science fair project is to determine how distance impacts the Doppler Effect.

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.

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

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

In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.

This science fair project idea demonstrates sonar mapping of the ocean floor.

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

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

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

In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.