MCQ
A big explosion on the moon cannot be heard on the earth because
  • A
    The explosion produces high frequency sound waves which are inaudible
  • Sound waves required a material medium for propagation
  • C
    Sound waves are absorbed in the moon's atmosphere
  • D
    Sound waves are absorbed in the earth's atmosphere

Answer

Correct option: B.
Sound waves required a material medium for propagation
b
Sound travels through the vibration of atoms and molecules in a medium (such as air or water). In space, where there is no air, sound has no way to travel. Hence, big explosion on the moon cannot be heard on the earth.

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