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

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

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

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.

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

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.

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

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