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If a cloud is dense but vertical motion is weak, why may the chance of hail be low?

Answer and explanation

Correct answer: Because hail needs strong updrafts to keep ice particles aloft

Answer: A. Hail develops when ice particles remain inside a strong convective cloud long enough to collect supercooled water and grow. Powerful updrafts repeatedly lift the particles into very cold regions and prevent them from falling out too soon. If vertical motion is weak, the particles may fall before they grow through repeated cycles, so hail becomes less likely even if the cloud looks dense. B is wrong because a dense cloud can contain considerable water and ice. C is wrong because weak upward motion does not always produce snowfall; precipitation depends on temperature and cloud processes. D is wrong because hail is associated with deep storm clouds, not clear skies. Memory cue: dense cloud alone is insufficient—hail needs deep convection and strong updrafts.

Related tags

HailUpdraftsConvective CloudsPrecipitationClouds And PrecipitationWater In The AtmosphereGeographyClass 12 Mcq

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