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Q: Why can not the sound is heard on the Moon?
  • A. No sound on the Moon.
  • B. Because there is no water on the Moon.
  • C. There is no atmosphere on the Moon and sound cannot travel without medium.
  • D. People who go to the moon become deaf.
Correct Answer: Option C - Sound is mechanical waves whose transmission requires medium (solid, fluid, gas). Since there is no transmission of sound due to vacuum on the moon. That is, no sound is heard there.
C. Sound is mechanical waves whose transmission requires medium (solid, fluid, gas). Since there is no transmission of sound due to vacuum on the moon. That is, no sound is heard there.

Explanations:

Sound is mechanical waves whose transmission requires medium (solid, fluid, gas). Since there is no transmission of sound due to vacuum on the moon. That is, no sound is heard there.