question_answer

Give reasons for the following observations on the surface of moon: (i) sunrise and sunset are abrupt (ii) sky appears dark (iii) A rainbow is never formed.

Answer:

                (i) Moon has no atmosphere. There is no scattering of light. Sunlight reaches moon straight        covering shortest distance. Hence sunrise and sunset are abrupt. (ii) Moon has no atmosphere. So there is nothing to scatter sunlight towards the moon. No skylight reaches moon surface. Sky appears black in the day time as it does at night. (iii) No water vapours are present at moon surface. No clouds are formed. There are no rains on the moon. So rainbow is never  observed.