Winds Storms And Cyclones

Physics
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When a fluid is heated, it expands and becomes

A
lighter
B
heavier
C
no change
D
none of these
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Which of the following expands most of heating?

A
Solids
B
Liquids
C
Sand
D
Gases
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During a cyclone, air moves from :

A
Region of high pressure to low pressure
B
Region of high pressure to high pressure
C
Region of low velocity to high velocity
D
Region of high pressure to low velocity
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By what sign can an approaching cyclone be identified?

A
Cool breeze and rains.
B
High temperature and humidity.
C
Rains accompanied by lighting
D
Powerful water waves.
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Sea breeze, a local wind system characterized by a flow from sea to land 

A
During day
B
During night
C
Throughout day and night
D
None of these
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Which of the following is the first sign of an approaching cyclone?

A
Rains accompanied by lighting
B
High temperature and humidity
C
Cool breeze and rains
D
Powerful water waves
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When a substance is heated, its density 

A
increases
B
decreases
C
remains same
D
first decreases then increases
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Which of the following will rise the highest?

A
Air at
B
Air at
C
Air at
D
Air at
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Wind currents are generated due to:

A
Uneven heating between the equator and the poles
B
Change in atmospheric pressure
C
Thunderstorm
D
Cyclone
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