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If light mist is seen over an open water body on a cold morning what is the most appropriate reason?

Answer and explanation

Correct answer: Moisture from the water body and cooling of lower air

Correct answer: A. An open water body is a source of moisture because some water evaporates into the air. On a cold morning, the air close to the water surface may cool enough to approach saturation. The added moisture can then condense into tiny droplets suspended above the water, producing light mist. A does not claim that every water body always produces mist; it gives the appropriate combination of moisture supply and cooling under suitable conditions. B is wrong because water does not turn into stone as part of mist formation. C is opposite to the truth, since mist requires water vapour or moisture. D is too absolute and is not the direct physical explanation; the important factors are moisture and cooling. Memory cue: a moist source plus cool lower air makes mist possible.

Related tags

MistWater BodyCold MorningLower-Air CoolingForms Of Condensation: DewFrostFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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