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

.Have you ever had problems with your wifi signal strength? In this experiment you will learn about how wireless signals pass through the air and solid objects.

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.

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 produces sounds by creating vibrations using different objects.

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

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 science project examines the history of earthquakes and what we can do to prevent future disasters.

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.

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

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

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

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

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.