This week we had fun with a classic STEM activity: making a paper cup phone, something I remember doing as a child.
Making a cup phone is a fun way to learn about the science of sound.
Why does the string and paper cup phone work?
Sound waves can travel through air, solids, and liquids.
When you speak into the cup, the vibrations are transmitted into the string. They continue to travel through the string, as long as it is held taut, to the receiving cup. There the vibrations are transmitted to the air in the cup, around the listener’s ear, allowing the whisper to be heard.
Everyone had a fun time learning about how sound travels and making their own telephone cups!!