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Dew and fog are both related to which process?

Answer and explanation

Correct answer: Condensation

Direct answer: A, condensation. Water vapour is an invisible gas in the air. When moist air cools sufficiently, the vapour changes into tiny liquid water droplets; this change from gas to liquid is called condensation. Dew consists of droplets that form on cool surfaces near the ground. Fog consists of very small water droplets suspended near the ground, reducing visibility. Their exact locations differ, but both involve the same basic process. Option B is wrong because volcanism involves volcanic activity, not the change of atmospheric vapour into droplets. Option C is wrong because a landslide is the downward movement of soil or rock. Option D is wrong because erosion is the wearing away and movement of material. Option A is correct. Memory cue: cooling moist air can condense into dew or fog.

Related tags

DewFogCondensationAtmospheric MoistureForms Of Condensation: DewFrostAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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