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Question

Which of the statements given below is correct?
[NCERT]

A
In winter the winds flow from the land to the ocean.
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B
In summer the winds flow from the land towards the ocean.
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C
A cyclone is formed by a very high-pressure system with very
high-speed winds revolving around it.
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D
The coastline of India is not vulnerable to cyclones.
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Solution

The correct option is C A cyclone is formed by a very high-pressure system with very
high-speed winds revolving around it.
In winters, the land is heated slower than the oceans. Hence, land is cooler in winters and has a higher pressure than ocean. As a result, wind flows from land to ocean in winters.

In summers, the opposite effect is seen. The land is hotter and has a lower pressure than the ocean. As a result, wind flows from ocean to land in winters.

In summers, the winds are much stronger and can lead to storms and cyclones. The coastlines are more vulnerable to cyclones. This is because oceans provide a lot of heat energy for the cyclone to build up and become stronger.

A cyclone is formed around a calm region called the eye. The region around it is very violent and has very high speed winds and high pressure.

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