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What is the combined importance of moisture and cooling in mist formation?

Answer and explanation

Correct answer: Moisture provides droplet source and cooling brings saturation

Correct answer: A. Mist forms when moist air cools sufficiently for its relative humidity to reach saturation, allowing part of the water vapour to condense into very small droplets suspended near the surface. Moisture is necessary because droplets must come from water vapour. Cooling is important because cooler air can hold less water vapour; as temperature falls, the air approaches its dew point and condensation becomes possible. A correctly includes both requirements. B is wrong because removing moisture reduces the material needed to form droplets. C is wrong because cooling changes temperature and may cause condensation; it does not make air disappear. D is wrong because both moisture and cooling help the process. Memory cue: moisture supplies the water, cooling starts the visible mist.

Related tags

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

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