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If droplets fall from a cloud but both melting and evaporation are possible in the lower air, what will final precipitation depend on?

Answer and explanation

Correct answer: Temperature and humidity conditions of the whole air column

Direct answer: A is correct. Precipitation does not depend only on what happens inside the cloud. After a drop or ice particle leaves the cloud, it passes through the air column below it. The temperature of successive layers can determine whether ice melts into rain, remains frozen, or changes form. Humidity also matters: in relatively dry air, falling drops can lose water by evaporation or may disappear before reaching the ground; in moist air, they are more likely to survive. Thus the final type and amount of precipitation depend on the temperature and moisture conditions from the cloud base to the surface, together with the original particle. B, C, and D do not control the physical changes in the falling precipitation. Memory cue: follow the particle from cloud to ground, not just inside the cloud.

Related tags

Air ColumnPrecipitation TypeHumidityClouds And PrecipitationWater In The AtmosphereGeographyClass 12 Mcq

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