Phases of the moon occur because

(a) we can see only that part of the moon which reflects light towards us.

(b) our distance from the moon keeps changing.

(c) the shadow of the Earth covers only a part of moon’s surface.

(d) the thickness of the moon’s atmosphere is not constant.

 

Answer

(a) we can see only that part of the moon which reflects light

 

Explanation

Moon does not produce its light, but reflects the light of the sun

Hence, we see only that part of the moon, from which the light of the Sun is reflected towards us.

  1. Class 8
  2. Chapter 17 Class 8 - Stars and the Solar System

About the Author

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.