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What is the main difference between dew and frost?

Answer and explanation

Correct answer: Dew is a deposit of liquid water droplets, whereas frost is a deposit of ice crystals

Correct answer: B. Dew is made of liquid water droplets that form when a surface cools to the dew point but remains above freezing. Frost is made of ice crystals or frozen moisture that forms when the surface is at or below freezing. Thus, the physical state of the deposited water is the key difference: liquid in dew and solid ice in frost. Option A is wrong because dew is not water vapour itself; it is the liquid product of condensation, and frost is not dust. Option C is wrong because both can occur on suitable land surfaces, not only in the sea or desert. Option D is wrong because dew requires cooling rather than high heat, and frost requires moisture even if it freezes directly. Memory cue: dew means drops; frost means crystals.

Related tags

DewFrostLiquid DropletsIce CrystalsCondensationForms Of Condensation: DewFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The Atmosphere

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