And these tuning fork experiments are great visual examples of how vibrations cause sound waves. Sound is an important physics concept that students will enjoy learning. Discuss what happens as the vibrations from the tuning fork reach the drum head.Then, have them strike the tuning fork and hold it about an inch above the drum.Have students sprinkle some salt on top of the drum.Secure the drum head with a rubber band.Make sure the drum head is stretched tightly over the base. Take the empty can (base) and cover the open end with plastic wrap (drum head).Tuning fork kit (includes tuning fork and rubber bands).Discuss: what happens to the ball as the tuning fork gets closer?įor this experiment, students will build a simple drum to demonstrate the way sound causes vibrations.This time have students strike the tuning fork and move it slowly toward the ping-pong ball.Without striking the tuning fork, move it toward the ping-pong ball. Have one student hold the string away from her body.Cut a string about 1-1 ½ feet long and tape one end of it to the ping-pong ball.
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