Q5 of 41 Page 285

Can we hear any sound on the moon?

No, we can’t hear sound on moon as sound needs medium to travel and there is no medium on moon in which sound can travel not even air.


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3

Name two objects other than planets which are members of the solar system.

 4

Mention the relation between the size of moon and the size of the Earth in terms of their diameters.

 1

Mention the name of the star which remains fixed at the same place in the sky in the north.

 2

Explain the statement, ‘a star is 8 light years away from the Earth’.