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What is the main similarity between dew and frost formation?

Answer and explanation

Correct answer: Both are linked with cooling of a surface

Correct answer: B, both are linked with cooling of a surface. At night, a surface may lose heat and become sufficiently cold for nearby air to reach saturation. Water vapour then changes into a deposit on or near that surface. Dew is generally liquid water deposited on a cool surface, whereas frost forms when the temperature is at or below freezing and ice crystals develop. A is wrong because strong wind is not the defining cause; calm conditions often favour surface cooling. C is wrong because dew and frost are not restricted to deserts. D is wrong because their formation is associated with condensation or deposition, not an increase in evaporation. The important common idea is cooling; the state of the deposit distinguishes dew from frost. Memory cue: cool surface is common, liquid or ice is the difference.

Related tags

GeographyDewFrostForms Of Condensation: DewFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereClass 12 Mcq

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