Science Questions

Does sound travel further in cold weather than warm?

Sat, 21st Oct 2006

Part of the show How We Hear, Echolocation and Giant Whoopee Cushions

Question

Nick in Arizona asked:

Is it true that sound travels further in cold weather than in warm weather and how does this work?

Answer

The speed of sound does depend on temperature and it is slower at colder temperatures, so it can sound different. Deep down, sound is the vibration of molecules and if you've got a lower temperature and you meet them, they just vibrate a bit slower.

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