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The daily sequence of fog formation and later clearing is related to what?

Answer and explanation

Correct answer: Night cooling and daytime heating

Answer: A. Fog commonly develops when the near-surface air cools enough for its water vapour to condense into suspended droplets. At night, especially under suitable clear and calm conditions, the ground can lose heat and cool the air next to it. This can produce fog by morning. After sunrise, incoming solar energy warms the surface and the lower air; the droplets may then evaporate, so the fog becomes thinner or clears. A is correct because it describes this daily cooling–heating sequence. B has no connection with the ordinary daily fog cycle. C and D are geological processes, not the normal cause of daily fog and clearing. The pattern is not automatic every day; moisture, wind, and local conditions also matter, but the basic thermal cycle is night cooling followed by daytime heating.

Related tags

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

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