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Why do cirrus clouds produce little precipitation reaching the ground despite being very high?

Answer and explanation

Correct answer: Because they are generally thin ice-crystal clouds

Answer: A, because cirrus clouds are generally thin, high clouds made mainly of ice crystals. At great height, the temperature is very low, so water exists mainly as tiny ice crystals. These particles are usually sparse and light, and the cloud contains too little condensed water for large precipitation drops to form easily. If ice particles begin to fall, some may evaporate or remain suspended before reaching the ground, especially when the lower air is dry. Option A is correct because it identifies both their thin structure and icy composition. B is wrong because cirrus clouds are high in the atmosphere, not at sea level. C is wrong because clouds are made of water droplets and/or ice crystals, not rock. D is wrong because light has no role in the basic reason given here. Memory cue: cirrus means high, thin, wispy ice-cloud; high does not automatically mean heavy rain.

Related tags

Cirrus CloudsHigh CloudsIce CrystalsPrecipitationClouds And PrecipitationWater In The AtmosphereGeographyClass 12 Mcq

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