Question

(3) We cannot hear the explosions taking place on the sun.

(4) Dense trees are planted in the surrounding areas of the aerodrome.
Give scientific reason

NCERT CLASS 8 SCi​

Answer 1

Explanation:

(3)Answer: Sound is a form of mechanical energy,it requires medium for the propagation. But there is no medium in between sun and earth.So we can not hear the sounds of explosions that take place on the surface of sun.

(4)Dense vegetation is usually planted near the aerodromes for 2 primary reasons: ... The trees planted near the aerodrome deflect and absorb the sound waves, thereby decreasing noise pollution.

Answer 2

Answer:

(3) We cant hear the sound of explosion taken place on sun because

1 we are much far away from sun

2sound travels in air and there is no air on space

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