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

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

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

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.

This project determines what percentage of test subjects react adversely to the sound of fingernails on a chalkboard and explores their physiological responses.

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.

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

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.

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

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

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.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

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

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

This experiment will explore how mallets of various materials and weight create sonic tones of varying lengths.

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

Find out the differences (if any) in the frequencies of voices produced from a computer, from a phone, and directly coming out of the voice box of a human.

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

This experiment investigates whether there are certain sounds that affect men and women differently