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.

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

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

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

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

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.

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

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.

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

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.

This science fair project idea produces varying pitches of sound.

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

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

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.

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

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