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

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

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.

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.

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

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

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.

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

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.

.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.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

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

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

In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.

What is the Doppler Effect, or the Doppler Shift? The purpose of this science fair project is to determine how distance impacts the Doppler Effect.

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