Talking Cups

Make your own spooky talking cup, just in time for Halloween! In this experiment, we observe that sounds are caused by vibrations. When you move the wet paper towel down the string, you cause the string to vibrate. The cup amplifies the vibrations, producing a sound! After you’ve created your talking cup, take this experiment further by testing different types and lengths of string or different cups. Can you make a device that produces a louder sound?