Question

Question 2
If there were no atmosphere around the earth, the temperature of the earth will

(a) increase
(b) go on decreasing
(c) increase during day and decrease during night
(d) be unaffected

Answer 1

(c) increase during day and decrease during night

The atmosphere covers the Earth, like a blanket. The atmosphere keeps the average temperature of the Earth fairly steady during the day and even during the course of the whole year. The atmosphere prevents the sudden increase in temperature during the daylight hours. And during the night, it slows down the escape of heat into outer space.