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What is rainfall caused by moist air rising along a mountain slope called?

Answer and explanation

Correct answer: Orographic rainfall

Correct answer: C, orographic rainfall. When moist air encounters a mountain barrier, it is forced to rise along the windward slope. As it rises, pressure decreases, the air expands and cools, and its water vapour may condense into clouds. If the droplets grow sufficiently, rain falls on the windward side. This rainfall is called orographic, relief, or mountain rainfall because the relief of the land causes the uplift. A is wrong because cyclonic rainfall is associated with converging air and low-pressure systems. B is wrong because convectional rainfall is mainly produced by strong heating of the surface and rising warm air. D is wrong because acid rain refers to chemically acidified precipitation, not rainfall caused specifically by a mountain slope. Memory cue: “orography means relief; mountain relief forces moist air upward.”

Related tags

Orographic RainfallMountain UpliftWindward SlopePrecipitationClouds And PrecipitationWater In The AtmosphereGeographyClass 12 Mcq

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