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What can form by condensation of water vapour in cool air near the ground?

Answer and explanation

Correct answer: Fog

Correct answer: D, fog. Cool air near the ground may become saturated with water vapour. When the vapour cools to the dew point, it condenses into countless tiny liquid droplets suspended close to the surface. This collection of droplets is fog, and it can greatly reduce visibility. A, the ozone layer, is a high-atmosphere region containing ozone and is not formed by near-ground condensation. B, thunder, is a sound associated with lightning and is not a visible collection of water droplets. C, sunshine is light and energy from the Sun, the opposite of the cooling condition described. Therefore D follows directly from the process: cool near-ground air plus condensation produces fog. Memory cue: fog is condensation at ground level.

Related tags

FogCondensationCool AirVisibilityForms Of Condensation: DewFrostAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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