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How can cloud droplets change into raindrops?

Answer and explanation

Correct answer: By joining together and becoming larger and heavier

Answer: A, droplets can join together and become larger and heavier. Cloud droplets are initially very small and may remain suspended because air currents can support them. Through collision and coalescence, moving droplets meet and merge into bigger drops. In suitable cold clouds, ice crystals can also grow at the expense of water droplets and later melt as they fall. Once a drop becomes heavy enough for gravity to overcome the upward support of the air, it falls as precipitation. B is wrong because changing into gas would mean evaporation, not rain formation. C is wrong because raindrops are liquid water, not rock particles. D is wrong because distance from the Sun is not the mechanism. Cue: coalescence means “come together”; bigger drops are more likely to fall.

Related tags

CoalescenceRaindropsCloud DropletsClouds And PrecipitationWater In The AtmosphereGeographyClass 12 Mcq

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