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Why does warm air often rise in cyclonic rainfall?

Answer and explanation

Correct answer: Because warm air is lighter than cold air

Answer: A, warm air is less dense and therefore lighter than cold air. In many cyclonic or frontal situations, warmer air meets a colder, denser air mass. The denser cold air tends to remain lower and wedges beneath the warm air, forcing the warm air to rise. Rising air expands and cools; if it contains moisture, condensation produces clouds and possibly widespread rainfall. B is wrong because air does not turn into rock. C is wrong because cold air does not disappear; it remains an important part of the air-mass interaction. D is wrong because evaporation stopping is not the reason warm air rises. The exact lifting pattern can vary with the type of cyclone, but the key school-level idea is density difference and air-mass interaction. Cue: warm air rises over denser cold air.

Related tags

Cyclonic RainfallAir MassesFrontal LiftingClouds And PrecipitationWater In The AtmosphereGeographyClass 12 Mcq

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