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Why can very strong wind reduce dew formation?

Answer and explanation

Correct answer: Because it removes the cool moist layer

Direct answer: A, because strong wind disturbs and removes the cool, moist layer of air close to the surface. Dew usually forms most readily on a relatively clear and calm night. The surface cools by losing heat, and nearby air remains moist and cool enough for water vapour to condense. Very strong wind mixes this near-surface air with air from above and continually replaces it. This can prevent a stable saturated layer from developing and may also increase evaporation from the surface. A is correct because it describes this disturbance of the local cool, moist conditions. B is wrong because wind does not stop the Moon and lunar visibility is not the mechanism of dew formation. C is wrong because wind does not turn soil into water. D is wrong because strong wind does not always make a surface freeze; dew may form above freezing, and wind can actually prevent the required stable cooling. Memory cue: calm air lets dew settle; strong wind mixes it away.

Related tags

DewWindCalm AirNight CoolingForms Of Condensation: DewFrostFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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