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Q5 (NDA-II/2010) Geography › World Physical Geography › Atmospheric pressure winds Answer Verified

Consider the following statements I. In a cyclone, the direction of wind flow is counter clockwise in the northern hemisphere II. The tropica] cyclone fades away when it reaches land because there is no large supply of warm moist air Which of the statements given above is/are correct?

Result
Your answer: —  Â·  Correct: C
Explanation

Statement I is correct because the Coriolis force deflects moving air to the right in the Northern Hemisphere. As air flows inward toward a low-pressure center (cyclone), this rightward deflection initiates a counter-clockwise rotation [2][t1][t4]. In the Southern Hemisphere, the deflection is to the left, resulting in clockwise rotation [t1][t7]. Statement II is also correct as tropical cyclones are fueled by the release of enormous latent heat derived from a continuous supply of warm, moist air over oceans [c3][c4]. When a cyclone makes landfall, it is cut off from this primary energy source (the warm ocean surface), causing the storm to weaken and eventually fade away [t6]. Additionally, increased friction over land contributes to this dissipation [t6]. Therefore, both statements accurately describe the physical mechanisms governing cyclone circulation and energy dynamics.

Sources

  1. [2] https://rsmcnewdelhi.imd.gov.in/images/pdf/faq.pdf
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SIMILAR QUESTIONS

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