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Question: 6

Write about polar easterlies?

From the high pressure belts of the polar region, winds blow towards sub polar low pressure belts. These winds are called polar easterlies. These winds are very cold and dense.

Question: 7

What are variable winds?

Winds that do not have definite speed or direction are known as variable winds. They keep on changing their direction and location.

Question: 8

Write the classifications of winds?

Winds may be classified into 4 types.

They are

(i). permanent or planetary wind

(ii). Periodic and seasonal winds

(iii). Variable winds and

(iv) local winds.

Question: 9

What are westerlies?

The wind that blows from the sub-tropical high pressure to sub polar low pressure belt is known as westerly winds. These winds blow between 40° to 60° north and south latitudes.

Question: 10

Why are the trade winds so called?

In olden days, cargo ships sailed with the help of such prevailing winds.

The Easterlies were very helpful for the sailing of such cargo ships. So they are called as trade winds.