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Why can temperature inversion help fog persist?

Answer and explanation

Correct answer: It traps cold, moist air below

Direct answer: A is correct. Normally, warmer air can rise and help mix the lower atmosphere. During a temperature inversion, relatively warmer air lies above cooler air near the ground, so upward movement and vertical mixing become weak. If the lower air is moist and has tiny fog droplets, those droplets remain concentrated near the surface instead of being dispersed. Fog may therefore persist until sunlight, wind, or stronger mixing changes the conditions. A is correct because it describes the trapping of cool, moist lower air. B is wrong: an inversion does not make the surface extremely hot. C is scientifically impossible; water vapour does not become rock. D is wrong because fog droplets usually remain suspended rather than immediately falling as rain. Memory cue: inversion means a lid over cool, moist air.

Related tags

Temperature InversionFog PersistenceVertical MixingForms Of Condensation: DewFrostFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeographyClass 12 Mcq

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