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

Find out whether matching resonant frequencies can cause objects to shatter.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

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

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

This awesome diffraction grating experiment puts high school students' applied math skills to the test by having them calculate the wavelength of laser light.

This science fair project idea produces varying pitches of sound.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

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

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

This science fair project idea shows how a vibrating object transfers energy to whatever it touches.

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

Design a hearing protection device to protect their ears from loud noises. Examine the properties of current protective hearing devices, materials.

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

Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.