Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

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

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

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

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.