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Dew and frost both form on surfaces, yet what is their main difference?

Answer and explanation

Correct answer: Dew is liquid droplets and frost is solid ice crystals

Direct answer: A is correct. Both dew and frost are forms of condensation or deposition on a surface, usually after cooling at night. The key difference is the physical state of the deposited water. When the surface is cool enough for moisture to condense but remains above freezing, water appears as liquid droplets called dew. When the surface is at or below freezing, moisture forms solid ice crystals called frost. A correctly states this state difference. B is wrong because both are surface phenomena, not an air-versus-sea distinction. C is wrong because dew ultimately comes from atmospheric water vapour. D is wrong because frost requires a sufficiently cold surface, not a hot one. Memory cue: liquid means dew; ice crystals mean frost.

Related tags

DewFrostPhysical StateForms Of Condensation: DewFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeographyClass 12 Mcq

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