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When can clouds formed over the sea give more rainfall after reaching land?

Answer and explanation

Correct answer: When they receive orographic or convective uplift

Correct answer: A, when the clouds receive orographic or convective uplift. Air over the sea generally receives moisture through evaporation. When this moist maritime air moves towards land, mountains may force it to rise; this is called orographic uplift. Strong surface heating can also make the air rise by convection. Rising air expands and cools, causing further condensation, cloud development, and possible precipitation. A is correct because moisture plus uplift favours rainfall. B is wrong because completely dry air would reduce available moisture and may cause evaporation of cloud droplets. C is wrong because cloud water or ice particles are necessary for precipitation. D is wrong because ending the moisture source does not itself increase rainfall. Memory cue: “Moisture needs lifting”: sea supplies moisture, and uplift helps turn it into rain.

Related tags

Maritime AirOrographic UpliftConvective RainfallPrecipitationClouds And PrecipitationWater In The AtmosphereGeographyClass 12 Mcq

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