10 QA on Earth atmosphere | Learn Physics

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)