10 Question-Answer on Earth’s atmosphere
1. The earth is surrounded by atmosphere up to a height of about
(a) 200 km
(b) 400 km
(c) 500 km
(d) 600 km
Ans: (b)
2. Clouds are contained in a layer from the earth’s surface, which is called
(a) Troposphere
(b) Stratosphere
(c) Mesosphere
(d) Ionosphere
Ans: (a)
3. The density of air at the top of stratosphere in comparison to that of near the eart’s surface is
(a) 10-2 times
(b) 10-3 times
(c) 102 times
(d) 103 times
Ans: (b)
4. The atmosphere between the heights of 50 km and 80 km is called
(a) Mesosphere
(b) Ozonosphere
(c) Ionosphere
(d) Troposphere
Ans: (a)
5. The ozone layer of the atmosphere lies in the region called
(a) Troposphere
(b) Stratosphere
(c) Mesosphere
(d) Ionosphere
Ans: ( b)
6. The temperature variation in the region of stratosphere lies from
(a) 290 K to 220 K
(b) 220 K to 280 K
(c) 280 K to 180 K
(d) 180 K to 700 K
Ans: ( b)
7. The temperature variation in the region of troposphere lies from
(a) 180 K to 700 K
(b) 280 K to 180 K
(c) 220 K to 280 K
(d) 290 K to 220 K
Ans: ( d)
8. The atmosphere above the height of 80 km is called
(a) Stratosphere
(b) Troposphere
(c) Mesosphere
(d) Ionosphere
Ans: (d)
9. If the earth did not have atmosphere, its surface temperature on a day time would be
(a) Higher
(b) Lower
(c) Same as now
(d) Not sure
Ans: (a)
10. If there were no atmosphere, the average temperature on the surface of the earth would be:
(a) Lower
(b) Higher
(c) Same as now
(d) 0˚C
Ans: ( a)