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Which is a surface form of condensation?

Answer and explanation

Correct answer: Dew

Correct answer: A, dew. Condensation means that water vapour changes into liquid water when air or a surface cools sufficiently. In dew formation, the vapour changes into liquid droplets directly on cool surfaces such as grass, leaves, or metal. Therefore, dew is classified as a surface form of condensation. A is correct because the droplets are attached to a surface. B is not the best answer in this question: frost is also associated with a cold surface, but it is made of ice crystals formed when vapour deposits or freezes under very cold conditions; school classifications commonly distinguish frost from liquid dew. C is incorrect because fog consists of tiny droplets suspended in air near the ground, not deposited on a surface. D is also incorrect because mist consists of fine droplets suspended in air and usually permits better visibility than fog. Memory cue: liquid drops on a surface mean dew; droplets floating in air mean fog or mist.

Related tags

DewCondensationSurface CondensationFrostFogForms Of Condensation: DewAnd MistForms Of Condensation Dew Frost Fog And MistWater In The Atmosphere

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