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.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

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

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.

This science fair project idea demonstrates sonar mapping of the ocean floor.

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

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

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.

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

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

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

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