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Frost and fog may both be linked with cold conditions, yet what is their main physical difference?

Answer and explanation

Correct answer: Frost is solid ice crystals on a surface while fog is suspended tiny droplets or ice crystals in air

Correct answer: A. Frost is formed when water vapour changes directly into ice, or freezes as a deposit, on a sufficiently cold surface. It is therefore a solid surface form. Fog forms when water vapour condenses into extremely small droplets, or sometimes ice particles, that remain suspended in air close to the ground. Both can occur in cold conditions, but their locations and physical arrangements differ: frost is deposited on an object, whereas fog is carried in the air. B reverses this distinction. C is wrong because neither term means only rainfall or hail. D is wrong because both depend on atmospheric water vapour. Memory cue: frost is attached; fog is suspended.

Related tags

FrostFogPhysical DifferenceCondensation FormsForms Of Condensation: DewAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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