1.

Give reasons for the following:(i) The sky appears to be blue during day time to a person on earth.(ii) The sky near the horizon appears to have a reddish hue at the time of sunset and sunrise.(iii) The sky appears dark instead of blue to an astronaut.(iv) The stars appear to twinkle.​(v) The planets do not twinkle.

Answer» Give reasons for the following:

(i) The sky appears to be blue during day time to a person on earth.

(ii) The sky near the horizon appears to have a reddish hue at the time of sunset and sunrise.

(iii) The sky appears dark instead of blue to an astronaut.

(iv) The stars appear to twinkle.

​(v) The planets do not twinkle.


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