Are We Hearing the Same Thing?

(Level: High School)

This activity demonstrates the effect of a medium (air versus water) on the reception of sound. Using a pipe or a hose, sounds are produced in the air and in the water. These sounds are analyzed qualitatively (verbal descriptions) and then quantitatively (measuring frequency, wavelength, and amplitude) using a microphone, a hydrophone, and a computer with a sound analysis program. The students will present to the class the sounds they heard and the effects of medium on those sounds.

File: Hearing Same Thing (PDF, 76 KB)