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What is the importance of dew point in dew formation?

Answer and explanation

Correct answer: Dew can form when surface cools to dew point

Correct answer: A. The dew point is the temperature to which air must cool, with its moisture content unchanged, for the air to become saturated. When a surface such as a leaf cools to or below the relevant dew-point temperature, water vapour can condense into liquid droplets, provided the surface is not below freezing. A is correct because it connects the cooling of the surface with the beginning of dew formation. B is incorrect because dew point describes atmospheric moisture, not ocean depth. C is incorrect because wind direction is described by the movement or direction of air, not dew point. D is incorrect because soil colour is a physical property of soil. Memory cue: dew point is the temperature threshold for condensation; it is not a direction or a depth.

Related tags

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

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