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What causes the winds to blow? - Geography

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Question

What causes the winds to blow?

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Solution

Winds blow because of differences in atmospheric pressure. Air moves from areas of high pressure to areas of low pressure to balance these pressure differences. This horizontal movement of air is called wind, and it is nature’s way of equalizing pressure differences.

  1. Pressure Gradient: The difference in pressure between two points creates a pressure gradient force. The greater this difference, the stronger the wind as air moves from high to low pressure.
  2. Coriolis Effect: Due to Earth’s rotation, the path of the wind is deflected to the right in the Northern Hemisphere and to the left in the Southern Hemisphere, which affects wind direction.
  3. Friction: Near the Earth’s surface, friction slows down the wind and changes its direction.
  4. Altitude and Latitude: Both affect wind speed and direction due to the Earth’s shape, rotation, and heating patterns.
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Chapter 13: Atmospheric Pressure and Winds - SOLVE AND SCORE [Page 142]

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Rachna Sapra Geography [English] Class 9 ICSE
Chapter 13 Atmospheric Pressure and Winds
SOLVE AND SCORE | Q D. 16. (c) | Page 142
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