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Dew and frost are both related to what?

Answer and explanation

Correct answer: Water vapour

Correct answer: A, water vapour. Both dew and frost originate from moisture in the atmosphere. When air near a surface cools sufficiently, water vapour changes into a visible form. If the surface temperature is above freezing, the vapour forms liquid droplets called dew. If the surface is below freezing, it can form solid ice crystals called frost. A is correct because atmospheric water vapour is the common source of both forms. B is incorrect because lava is molten rock and has no role in ordinary dew or frost formation. C is incorrect because earthquakes are movements of the ground, not moisture processes. D is incorrect because sea salt is not the basic material of dew or frost. Memory cue: same source—water vapour; different state—dew is liquid and frost is solid.

Related tags

DewFrostWater VapourCondensationForms Of Condensation: DewFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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