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What mainly decides whether dew or frost forms?

Answer and explanation

Correct answer: The relation of surface temperature to the freezing point (सतह के तापमान का हिमांक से संबंध)

Correct answer: A. Both dew and frost result from condensation of water vapour on a cooled surface, but the final state depends mainly on surface temperature. When the surface cools to the dew point but stays above freezing, water remains liquid and dew forms. When the surface reaches freezing temperature or becomes colder, the moisture freezes and frost forms. B, river-flow speed, does not determine the temperature or state of moisture on a field surface. C, wave height, is unrelated to this land-surface process. D, rock colour may affect absorption in some situations, but it is not the main deciding criterion here. Memory cue: above freezing means dew; at or below freezing means frost.

Related tags

DewFrostSurface TemperatureFreezing PointForms Of Condensation: DewFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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