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What is the correct importance of dust or smoke particles in fog formation?

Answer and explanation

Correct answer: They can provide tiny surfaces for condensation

Answer: A. Fog forms when moist air cools sufficiently for water vapour to condense into very small liquid droplets. Dust, smoke, salt, and other tiny particles may act as condensation nuclei. They provide microscopic surfaces on which water vapour can begin to condense, although particles alone do not guarantee fog; moisture and suitable cooling are also needed. A is therefore the precise answer. B is wrong because particles do not permanently remove water vapour; they can help it change into droplets. C is unrelated to fog formation. D is scientifically meaningless because particles do not transform air into seawater. Do not confuse a condensation nucleus with the water itself: the particle is only a surface that assists droplet formation.

Related tags

FogDustSmokeCondensation NucleiForms Of Condensation: DewFrostAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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