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If the surface temperature is below dew point but above freezing point which condensation form is most likely to form?

Answer and explanation

Correct answer: Dew

The correct answer is A, dew. The dew point is the temperature at which air becomes saturated and water vapour begins to condense. If a surface cools below the dew point, vapour can form liquid water droplets on that surface. The additional clue is that the surface remains above the freezing point, so the condensed water stays liquid and is identified as dew. B is wrong because frost requires frozen water or ice deposition, normally on a surface at or below freezing. C and D are wrong because fog and mist are droplets suspended in the air, whereas the question describes condensation on a surface. The sequence is simple: below dew point means condensation; above freezing means liquid droplets. Memory cue: dew point starts condensation, freezing point decides whether it is dew or frost.

Related tags

DewDew PointFreezing PointCondensationForms Of Condensation: DewFrostFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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