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Why can deep vertically developed cumulonimbus clouds cause intense rainfall?

Answer and explanation

Correct answer: Because they have strong updrafts and rapid droplet growth

Answer: B. Cumulonimbus clouds grow strongly upward when warm, moist air rises rapidly in an unstable atmosphere. As the air rises, it cools and water vapour condenses into cloud droplets; within the deep cloud, droplets and ice particles can collide, combine, freeze, and grow. Strong updrafts keep developing particles suspended long enough for them to become larger, while the cloud’s great vertical depth provides a large region for condensation and precipitation processes. When the particles become too heavy for the rising air to support, they fall as intense showers, often with thunder and lightning. A is wrong because the cloud is not made only of dry dust. C is wrong because condensation is essential to cloud and precipitation formation. D is wrong because cumulonimbus is associated with convective storms, not simply clear weather. Memory cue: deep cloud plus strong updraft means stormy, heavy precipitation.

Related tags

CumulonimbusHeavy RainfallUpdraftCondensationClouds And PrecipitationWater In The AtmosphereGeographyClass 12 Mcq

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