2007-03-24 05:34:29 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Helium is an inert gas that is lighter than air and can be inhaled briefly without risk of death. Sound is produced by vibration, the movement of air around our vocal chords. Because helium gas is lighter than the usual oxygen/nitrogen blend, it changes the resonant frequency of the human vocal tract, causing a faster vibration and a higher-pitched, cartoon-character sound.
2007-03-24 05:39:53 · answer #1 · answered by malthisar 3 · 3⤊ 0⤋
The speed of sound in helium is greater than it is in air. So the sound resonates back and forth more rapidly in your voice box when it contains helium, this give a higher-pitched sound.
2007-03-24 13:09:35 · answer #2 · answered by Adam B 2 · 0⤊ 1⤋
has to do with the gas in helium. i think. but whatever the reason, it sure is fun!
2007-03-24 12:38:35 · answer #3 · answered by PrInCe$s 2 · 0⤊ 0⤋
No clue! Google it!
2007-03-24 12:37:14 · answer #4 · answered by ? 2 · 0⤊ 0⤋