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What is the correct reason for rain-shadow formation on the leeward slope?

Answer and explanation

Correct answer: Descending air becomes warm and dry

Answer: A, descending air becomes warm and dry. On the windward side, moist air rises, cools, condenses, and loses much of its moisture as precipitation. After crossing the mountain crest, the remaining air descends on the leeward side. Descending air is compressed by increasing pressure and therefore warms. Warmer air can hold more water vapour, so its relative humidity falls and cloud formation becomes less likely. This produces a relatively dry rain-shadow region. B is wrong because air is present on the leeward slope. C is wrong because a river does not stop atmospheric rainfall. D is wrong because clouds do not all turn into ice there. Memory cue: windward is the wet side; leeward is the dry side because air descends, warms, and dries.

Related tags

Rain ShadowLeeward SlopeOrographic RainfallClouds And PrecipitationWater In The AtmosphereGeographyClass 12 Mcq

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