Climatology CDS Questions

CDS World Geography

Climatology MCQ Questions


13.
The thin transition zone separating the troposphere from the stratosphere is called the:
A.
Ionopause
B.
Stratopause
C.
Tropopause
D.
Mesopause
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ANSWER :
C. Tropopause
14.
Carbon dioxide is significant for climate primarily because it:
A.
Reflects incoming solar radiation back to space
B.
Absorbs incoming ultraviolet radiation in the stratosphere
C.
Forms the bulk of the atmosphere by volume
D.
Absorbs long-wave terrestrial radiation and produces the greenhouse effect
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ANSWER :
D. Absorbs long-wave terrestrial radiation and produces the greenhouse effect
15.
Which gas, found mainly between 15 and 35 km altitude, shields the Earth from ultraviolet radiation?
A.
Ozone
B.
Methane
C.
Helium
D.
Nitrous oxide
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ANSWER :
A. Ozone
16.
The hottest atmospheric layer, where temperatures can exceed 1000°C due to absorption of high-energy solar radiation, is the:
A.
Troposphere
B.
Thermosphere
C.
Mesosphere
D.
Stratosphere
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ANSWER :
B. Thermosphere
17.
Dust particles in the atmosphere are climatically important mainly because they:
A.
Increase the oxygen content of the air
B.
Form the ozone layer in the stratosphere
C.
Are the chief source of the greenhouse effect
D.
Act as nuclei (hygroscopic particles) around which water vapour condenses
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ANSWER :
D. Act as nuclei (hygroscopic particles) around which water vapour condenses
18.
The lower portion of the atmosphere where gases are uniformly mixed (up to about 100 km) is called the:
A.
Heterosphere
B.
Magnetosphere
C.
Homosphere
D.
Ionosphere
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ANSWER :
C. Homosphere