What would happen to sound in a world with no atmosphere?

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Multiple Choice

What would happen to sound in a world with no atmosphere?

Explanation:
Sound needs a medium to propagate. In a world with no atmosphere there are no molecules to carry vibrations, so a speaker’s buzzing or a voice can’t create traveling pressure waves. Without that medium, the energy stays local and you would hear nothing—silence. Electromagnetic signals, not sound, can travel through a vacuum, which is why space uses radio communications. So in no-atmosphere conditions, sound would not travel.

Sound needs a medium to propagate. In a world with no atmosphere there are no molecules to carry vibrations, so a speaker’s buzzing or a voice can’t create traveling pressure waves. Without that medium, the energy stays local and you would hear nothing—silence. Electromagnetic signals, not sound, can travel through a vacuum, which is why space uses radio communications. So in no-atmosphere conditions, sound would not travel.

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