NCERT Solutions for Class 9 Social Science History Chapter 4
Social Science Class 9 History
Climate 4
Important NCERT Questions Based on new NCERT Books for Session 2022-2023
Questions No: 4 Part: i
Give reasons as to why Seasonal reversal of wind direction takes place over the Indian subcontinent?
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The seasonal reversal of wind direction occurs over the Indian subcontinent due to differential heating. During summer, land heats faster, creating low pressure, while the oceans maintain higher pressure. This pressure contrast establishes a monsoon trough, attracting moisture-laden winds from the Indian Ocean—known as the southwest monsoon. In winter, the land cools faster, forming high pressure, leading to winds flowing from land to sea—the northeast monsoon. These seasonal pressure differences prompt the reversal of wind patterns, causing the distinct southwest and northeast monsoons.
Seasonal reversal of wind direction over the Indian subcontinent takes place due to pressure differential. El Nino has major role to play in the seasonal reversal of wind direction over the Indian subcontinent.
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