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Wind currents due to uneven heating between the equator and the poles

Cold wind fro...

Question

Cold wind from polar regions blow towards the equator, but they don't blow straight towards the equator. Which of the following causes this?

A

Rotation of the earth.

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B

Tilt of earth's axis.

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C

Moon's rotation

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D

Revolution of the earth.

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Solution

The correct option is A Rotation of the earth.
If the earth did not rotate on its axis, winds would blow from north towards south and from south towards north only. Earth rotates on its axis from west to east. This rotation of the earth causes winds from polar regions to deviate from their actual paths.

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Wind currents due to uneven heating between the equator and the poles

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