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When will snowfall more likely reach the ground as snow?

Answer and explanation

Correct answer: When air layers remain cold enough down to the ground

Correct answer: A. Snow begins as ice crystals or snowflakes in a cold cloud. To reach the surface as snow, these crystals must pass through the air below the cloud without melting. If the lower atmospheric layers remain sufficiently cold, the snowflakes preserve their solid form and can fall as snow. Option A is correct because it describes the temperature condition along the falling path. Option B is wrong because a warm lower layer can melt snowflakes into rain. Option C is wrong because water vapour is needed for cloud and ice-crystal formation; removing vapour would not produce snowfall. Option D is wrong because a very warm surface does not help snow remain solid and may melt it after landing. Memory cue: snow survives when the air column below the cloud stays cold, not merely when the cloud top is cold.

Related tags

SnowfallTemperature ProfileSolid PrecipitationClouds And PrecipitationWater In The AtmosphereGeographyClass 12 Mcq

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