I've never really thought about it before but I'm not sure how it works. Thanks!
2007-02-13 12:39:09 · 4 answers · asked by Stephanie 4 in Science & Mathematics ➔ Other - Science
The speed of sound in helium at 0°C is about 972 m/s, compared to 331 m/s in air. This is because helium is so much less dense than air.
This difference affects the resonant frequencies that are produced by the vocal tract, making them 2.7 times higher (approximately) which is why you sound like that!
2007-02-13 13:51:07 · answer #1 · answered by Anonymous · 289⤊ 21⤋
When you suck in the helium it has an effect on your vocial cords and it causes it to be a higher pitched noise until the effect wears off i dont know for sure but thats an option
2007-02-13 20:55:11 · answer #2 · answered by jecctt 2 · 27⤊ 180⤋
The speed of sound through hellium is different than the speed of sound through denser nitrogen (air is about 70 percent nitrogen).
So the pitch changes.
2007-02-13 20:53:49 · answer #3 · answered by Randy G 7 · 148⤊ 35⤋
Because the helium gas acts against your voice. I asked my science teacher and thats all i remember out of what he told me/
2007-02-13 20:47:39 · answer #4 · answered by Anonymous · 27⤊ 172⤋