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Q4 (NDA-I/2010) Geography › World Physical Geography › Atmospheric pressure winds Answer Verified

Statement I: During the day, winds blow from sea to land. Statement II : The land gets more heated than the surrounding sea, hence lower pressure develops over land as compared to sea.

Result
Your answer: —  Â·  Correct: A
Explanation

Statement I is true as winds blow from the sea to the land during the day, a phenomenon known as a sea breeze [4]. Statement II correctly explains this process: land has a lower heat capacity than water, causing it to heat up faster under solar radiation. As the land becomes warmer than the adjacent sea, the air above it heats, expands, and rises, creating a localized low-pressure area [3]. Conversely, the sea remains relatively cool, maintaining higher pressure [1]. This creates a pressure gradient that drives air from the high-pressure region over the sea toward the low-pressure region on land [5]. Therefore, Statement II provides the direct physical mechanism (differential heating and resulting pressure differences) that causes the wind direction described in Statement I [4].

Sources

  1. [1] FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 9: Atmospheric Circulation and Weather Systems > Land and Sea Breezes > p. 81
  2. [4] Science-Class VII . NCERT(Revised ed 2025) > Chapter 7: Heat Transfer in Nature > 7.2.1 Land and Sea Breeze > p. 95
  3. [2] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 23: Pressure Systems and Wind System > Land Breeze and Sea Breeze > p. 321
  4. [3] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 6: Pressure, Winds, Storms, and Cyclones > Activity 6.5: Let us observe > p. 89
  5. [5] https://www.ndbc.noaa.gov/education/seabreeze_ans.shtml
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SIMILAR QUESTIONS

CAPF · 2014 · Q6 Relevance score: 1.98

Statement I : The Doldrums is a low pressure area around the Equator where the prevailing winds are calm Statement I : Low pressure is caused by the heat at the Equator which makes the air rise and travel both Northwards and Southwards

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Statement I : Geostrophic wind blows above a height of 600 meters, parallel to the isobars Statement I : Geostrophic wind is the horizontal wind velocity, in which the coriolis force balances the horizontal pressure force.

CDS-II · 2011 · Q2 Relevance score: 1.53

Statement I : Anticyclone, which is a high pressure wind system, does not bring about significant change in weather condition. Statement II : The outward movement of wind from the high pressure center keeps limited scope for weather disturbance.