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9th Class Science Sound Question Bank 9th CBSE Science Sound

  • question_answer
      (a) Draw a diagram depicting soft sound and a louder sound. What is the main difference between the two? (b) Can two astronauts talk on the surface of the Moon as they do on the surface of the Earth? Why?  

    Answer:

       (a) Soft sound has small amplitude. (b) Two astronauts cannot talk on the surface of the Moon, because there is no atmosphere on the Moon, through which sound can travel. 


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