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If precipitation particles make several up-and-down cycles in cumulonimbus, why can hail grow?

Answer and explanation

Correct answer: A new ice layer can be added in each cycle

Correct answer: A, a new ice layer can be added in each cycle. Cumulonimbus clouds can contain powerful updrafts and downdrafts. An ice particle may be lifted into very cold, water-rich parts of the cloud, where supercooled droplets freeze onto it. It may then descend and be lifted again, allowing another layer to accumulate. Repeated cycles can therefore enlarge the hailstone and sometimes produce visible layers. B is wrong because particles do not become rock; they remain ice. C is wrong because vertical motion transports particles through different cloud regions rather than removing the air. D is wrong because hail growth mainly occurs inside the cloud, not only after reaching the ground. Memory cue: repeated updrafts act like repeated freezing stages around an ice core.

Related tags

Hail GrowthUpdraft CyclesCumulonimbusIce LayersClouds And PrecipitationWater In The AtmosphereGeographyClass 12 Mcq

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