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If moisture is sufficient but air mixes and moves away from the surface instead of staying near it, what happens to dew?

Answer and explanation

Correct answer: Dew formation may decrease

Correct answer: A. Dew requires more than moisture somewhere in the atmosphere. The air immediately next to the surface must contain enough water vapour, and the surface must cool to the dew point. If mixing or movement carries this moist air away, the near-surface layer may not remain sufficiently humid or stable. As a result, condensation directly on leaves can become less likely, so dew formation may decrease. B is too absolute; mixing does not always increase dew. C is wrong because frost requires temperatures at or below freezing and is not an unavoidable result of air movement. D is unrelated and uses the word “always,” which makes it incorrect. Memory cue: dew needs moisture close to a cool, quiet surface, not merely moisture somewhere above it.

Related tags

DewAir MixingNear-Surface HumidityStabilityForms Of Condensation: DewFrostFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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