Cyclones and Anti-Cyclones NDA Questions

NDA Physical Geography

Cyclones and Anti-Cyclones MCQ Questions


7.
One key atmospheric condition necessary for tropical cyclone formation and intensification is relatively low:
A.
Ocean temperature
B.
Atmospheric pressure at all levels uniformly
C.
Humidity
D.
Vertical wind shear (change in wind speed/direction with height)
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ANSWER :
D. Vertical wind shear (change in wind speed/direction with height)
8.
Tropical cyclones generally do NOT form very close to the equator (typically not within about 5 degrees latitude), primarily because the Coriolis force is:
A.
Too weak or effectively zero at the equator to initiate the necessary rotational spin
B.
Irrelevant to cyclone formation
C.
At its maximum strength at the equator
D.
Only relevant in temperate latitudes
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ANSWER :
A. Too weak or effectively zero at the equator to initiate the necessary rotational spin
9.
The calm, relatively clear central region of a mature tropical cyclone, characterised by light winds and often clear skies, is known as the:
A.
Eye (of the storm)
B.
Eye wall
C.
Outer core
D.
Rainband
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ANSWER :
A. Eye (of the storm)
10.
Surrounding the calm eye of a tropical cyclone is a ring of towering thunderstorms associated with the most intense winds and heaviest rainfall of the storm; this region is known as the:
A.
Eye
B.
Storm surge zone
C.
Eye wall
D.
Outer trough
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ANSWER :
C. Eye wall
11.
Spiralling bands of clouds and thunderstorms extending outward from the central eye wall of a tropical cyclone are known as:
A.
Convergence zones only
B.
The outer wall
C.
The eye
D.
Rainbands (or spiral bands)
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ANSWER :
D. Rainbands (or spiral bands)
12.
A tropical cyclone forming in the North Atlantic Ocean or the North-Eastern Pacific Ocean is generally referred to by the term:
A.
Typhoon
B.
Hurricane
C.
Willy-willy
D.
Cyclone
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ANSWER :
B. Hurricane