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What is the main reason for dew formation near open ground on a cold night?

Answer and explanation

Correct answer: Cooling of the ground surface

Correct answer: B, cooling of the ground surface. At night, the ground loses heat, especially under suitable clear and calm conditions, and its surface temperature may fall to the dew point. Air touching or lying close to this cool surface then becomes saturated, so some water vapour condenses into tiny liquid droplets on grass, soil, or other surfaces. A, sea salinity, does not cause dew. C, wind has no colour and this statement is meaningless. D, strong sunlight would warm the surface and generally oppose nighttime dew formation. Dew is liquid water; if the surface temperature is below freezing, a related deposit may be frost. Memory cue: cool surface plus saturated nearby air produces dew.

Related tags

GeographyDewCondensationCoolingForms Of Condensation: DewFrostFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereClass 12 Mcq

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