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 Indian Monsoon 24 Flashcards |
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True or False: Monsoons are characterized by their reversal of wind direction during different seasons. |
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True |
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The Inter-Tropical Convergence Zone (ITCZ) shifts towards the north during the monsoon season. What causes this shift? |
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The apparent movement of the sun and differential heating of land and water. |
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How does the differential heating of land and water contribute to the formation of monsoons? |
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Land heats faster than water, creating low pressure over land and high pressure over the ocean. This draws moisture-laden winds from the sea, forming monsoons. |
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What is the impact of El Niño on the Indian monsoon? |
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El Niño often leads to below-average and delayed monsoon rainfall due to changes in pressure differences between the eastern and western Pacific, though the effect is not always uniform. |
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Fill in the blank: The Arabian Sea branch of the monsoon is stronger than the Bay of Bengal branch because of its ___ and ___ characteristics. |
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Larger size and complete entry into the Indian peninsula. |
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Which countries receive most of their annual rainfall from the southwest monsoon? |
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India, Indonesia, Bangladesh, and Myanmar. |
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Describe the role of the Tibetan plateau in the formation of the southwest monsoon. |
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The Tibetan plateau heats intensely, creating a strong low-pressure area that enhances vertical air currents and attracts moisture-laden winds from the ocean. |
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True or False: The north-east monsoon is associated with high-pressure systems over the Tibetan plateau. |
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False. The north-east monsoon is associated with high-pressure cells over the Tibetan and Siberian plateaus. |
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What are 'mango showers' and their significance? |
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Pre-monsoon rains in April over Karnataka, Kerala, Konkan, and Goa that help in ripening mangoes. Also called summer showers. |
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Why has the Thar Desert formed in western India? |
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Lack of rainfall due to its location in the rain shadow area of the Aravalli range. |
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Explain the phenomenon of ‘breaks’ in the monsoon and its effects. |
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Breaks are dry spells caused by shifts in the monsoon trough towards the Himalayas, leading to uneven rainfall distribution with wet and dry periods. |
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Fill in the blank: The retreat of the southwest monsoon is marked by ___ and a rise in temperature, commonly called ___ heat. |
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Clear skies; October heat (due to high temperature and humidity). |
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Completed! Keep practicing to master all of them. |
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