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Formation of fog and its later lifting is most related to which daily change?

Answer and explanation

Correct answer: Night cooling and daytime heating

Answer: A. Fog often forms when the ground and the air close to it cool during the night. Cooling can bring moist air to its dew point, so water vapour condenses into tiny suspended droplets. After sunrise, solar heating warms the ground and the lower air. The droplets may then evaporate, and the fog becomes thinner or lifts and disappears, provided conditions become warm and dry enough. A correctly describes this daily, or diurnal, cycle. B concerns ocean chemistry and is not the usual cause of daily fog changes. C is a geological event, not a normal fog-forming process. D is also unrelated and occurs at temperatures far beyond ordinary atmospheric fog conditions. Memory cue: night cools and makes fog; daytime heating weakens it.

Related tags

FogDiurnal CycleNight CoolingDaytime HeatingForms Of Condensation: DewFrostAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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