Mystery #2Tier 2-3sound / waves
Why does breathing helium make your voice squeaky?
Suck a little helium from a party balloon and speak, and out comes a comical, high, cartoon-mouse voice. The strange part: you haven't changed your throat, your vocal cords still vibrate at the same rate. So why does your voice leap up the scale?
Your guess
What's your hunch about why the gas in your mouth changes how your voice sounds?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.