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In which condition is frost more likely than dew?

Answer and explanation

Correct answer: Surface temperature below freezing and moisture available

Direct answer: C is correct. Dew is liquid water deposited when a surface cools to the dew point but remains above freezing. Frost is more likely when the surface temperature falls to or below 0°C, provided that moisture is available. Under those conditions, water vapour can deposit as ice crystals, or condensed water can freeze, producing a white solid coating. A is more consistent with dew because the surface is above freezing. B is unlikely because a warm, dry surface is not normally cooled to saturation and has little available moisture. D describes warming conditions, not the usual setting for nocturnal frost. C correctly combines below-freezing temperature with moisture. The wording “more likely” matters: wind, cloud cover, humidity, and surface properties also influence the result. Memory cue: dew is wet liquid; frost is frozen deposit.

Related tags

FrostDewFreezing TemperatureMoistureForms Of Condensation: DewFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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