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 …

4 Groovy Activities to Teach about Vibration and Sound Energy

Most STEMists learn to appreciate vibrations as an infant when they hear their first lullaby.  And, many learn to love singing children’s songs with the accompaniment of maracas, drums and triangles in preschool and elementary school. But, do STEMists completely understand the energy of sound vibration— how we are able to hear and feel sound? Sound is more than noise; …