Vibrations

Sound vibrations travel through air, water, and even solid objects, but it’s not possible to see the waves. What if we could see the waves in another way? This science of sound experiment makes sound more visible by forcing objects to react to the sound vibrations.

Materials Required:

Empty clear mixing bowl

Plastic wrap

Large rubber band

Seeds/Sugar/Rice

How Does the Experiment Work?

Sound is a disturbance that travels through a medium as a wave. In this experiment, when you hit the bowlwith the spoon, you disturb the particles of bowl causing them to vibrate. The vibrations in the pan are transferred to the air surrounding the pan, creating a sound wave.

When these sound waves reach the plastic wrap it disturbs the particles of the plastic wrap causing them to vibrate. These vibrations in the plastic wrap cause the seed to move. Sound waves traveling through the air are also what allow us to hear the noise of the spoon hitting the bowl.

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ilearnscience