Sound Energy Activity


Good "Sound" Vibrations Experiment


Materials: bowl, plastic wrap, rubber band that fits over bowl, pinch of salt, metal bowl, spatula


Sound is caused by vibrations that moves air molecules in waves. To demonstrate that sound waves move through the air cover a bowl with plastic wrap and secure it with a rubber band. Sprinkle salt over the plastic wrap. Over the bowl with sprinkled salt clang a metal pot with a spatula. The sound vibrations from the clanging will cause the air molecules to move causing the salt on the plastic wrap to move.

Materials: Plate, rice, stereo with speakers (or large music box)

Sprinkle the rice on a plate and place it on top of a speaker. Turn the music on (preferably a song with a loud bass). Watch the rice dance!