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Why may mist be more visible near a river or lake in the morning?

Answer and explanation

Correct answer: Because water is a source of moisture

Correct answer: A, because a river or lake supplies moisture to nearby air. Water at the surface can evaporate, adding water vapour to the air above and around it. During the morning, the air and nearby surfaces may be cool. If moist air cools enough to reach saturation, some vapour condenses into very small droplets. These droplets remain suspended and are seen as mist. A is correct because it identifies the real moisture source; morning cooling helps the final condensation process. B is wrong because a river cannot turn air into stone. C is wrong because a lake does not remove sunlight; reduced heating or morning cooling may instead help condensation. D is wrong because evaporation does occur from water surfaces, although its rate changes with temperature, wind, and humidity. A useful caution is that moisture alone is not always sufficient: cooling is also important. Memory cue: nearby water supplies vapour; morning cooling makes mist visible.

Related tags

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

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