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

Check out this fun science fair project idea to learn about seismic waves and how fast they travel during an earthquake.

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

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

In this project students determine which instruments composers use to create birdsongs and birdcalls in classical music.

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

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

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.

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

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.