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

This science fair project idea explores whether talking to a plant will help it grow.

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

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

This science fair project idea produces varying pitches of sound.

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.

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

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

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.