Cyclones and Anti-Cyclones NDA Questions

NDA Physical Geography

Cyclones and Anti-Cyclones MCQ Questions


1.
A cyclone is broadly defined as a large-scale system of winds that rotate inwards around a strong centre of:
A.
No discernible pressure pattern
B.
High atmospheric pressure
C.
Constant, unchanging atmospheric pressure
D.
Low atmospheric pressure
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ANSWER :
D. Low atmospheric pressure
2.
In a cyclone, winds generally converge (move inward) towards the centre of low pressure and then rise, a process that typically results in:
A.
Immediate temperature drop to freezing
B.
Clear, cloudless skies
C.
Cloud formation and precipitation (rainfall)
D.
A complete absence of any wind
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ANSWER :
C. Cloud formation and precipitation (rainfall)
3.
In the Northern Hemisphere, due to the Coriolis effect, winds in a cyclone (low pressure system) circulate in a:
A.
Random, unpredictable direction
B.
Clockwise direction
C.
Straight line, with no rotation
D.
Anticlockwise (counter-clockwise) direction
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ANSWER :
D. Anticlockwise (counter-clockwise) direction
4.
In the Southern Hemisphere, due to the Coriolis effect, winds in a cyclone (low pressure system) circulate in a:
A.
Anticlockwise direction
B.
Clockwise direction
C.
Random, unpredictable direction
D.
Straight line, with no rotation
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ANSWER :
B. Clockwise direction
5.
Cyclones are broadly classified by meteorologists into two main types based on their region of formation and characteristics: tropical cyclones and:
A.
Temperate (or extratropical/mid-latitude) cyclones
B.
Continental cyclones (not a standard distinct category)
C.
Polar cyclones (a less standard classification)
D.
Equatorial cyclones (not a standard distinct category)
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ANSWER :
A. Temperate (or extratropical/mid-latitude) cyclones
6.
Tropical cyclones typically form over warm ocean waters, generally requiring a minimum sea surface temperature of approximately:
A.
50°C
B.
5°C
C.
26.5°C (around 27°C)
D.
10°C
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ANSWER :
C. 26.5°C (around 27°C)