Tin Can Phone
When you speak, your voice makes vibrations. Once the string is stretched tight enough, these vibrations travel down the string and vibrate the bottom of the can on the other end which, in turn, vibrates the air and those vibrations travel through the air to the other person's ear.
This is a fun project to make with a friend, and a dramatic illustration of vibration and sound waves.
Fun extension activity the kids will love!
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