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If fog begins to clear as the day advances what is the most likely reason?

Answer and explanation

Correct answer: Lower air warms and evaporates droplets

Correct answer: C. After sunrise, incoming solar energy commonly warms the ground and the air immediately above it. As this lower air warms, it can hold more water vapour, and the tiny liquid droplets making up fog may evaporate back into invisible water vapour. The suspended droplets then become fewer, so visibility improves and the fog clears. A is meaningless because air does not become stone. B is wrong because the water is not permanently lost; it changes phase and remains part of the atmosphere. D is opposite to the usual daytime warming. Remember: warming lowers relative humidity and promotes evaporation of fog droplets.

Related tags

Fog ClearingDaytime HeatingEvaporationVisibilityForms Of Condensation: DewFrostFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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