Popsicle Harmonica and the Science of Sound

Polaroid picture of a sound wave entering an ear. There is a craft stick harmonica underneath. The title reads Popsicle Harmonica. Science of Sound

What is Sound? A popsicle (craft stick) harmonica is a groovy way to demonstrate the science of sound because all sounds are produced by a certain kind of motion. As you stretch a rubber band and then pluck it, the rubber band moves back and forth so rapidly that its motion appears blurred. The sound you hear comes from its …