How to Build a String Phone to See Sound Work

SciShow Kids

This engaging episode of SciShow Kids explores the science of sound through the lens of a classic childhood experiment: the cup-and-string phone. Host Jessi explains that all sounds originate from vibrations, demonstrating this concept through relatable examples like vocal cords and guitar strings. The video breaks down the physics of how sound waves travel through air particles, explaining why voices get harder to hear as distance increases.