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What is the correct relationship between humidity and rainfall?

Answer and explanation

Correct answer: Humidity supplies water vapour but condensation and droplet growth are also needed for rainfall

Correct answer: A. Humidity describes the amount or proportion of water vapour present in air. It provides the moisture needed for cloud and rainfall formation, but moisture alone does not guarantee rain. The moist air generally needs cooling, condensation on suitable particles, and the growth or joining of cloud droplets or ice particles. They must become sufficiently heavy to fall as precipitation. B is too absolute: humid air can exist without immediate rainfall. C is false because cloud formation depends on atmospheric moisture and condensation. D reverses the relationship; substantial rainfall requires an available moisture supply, although humidity by itself does not determine every detail of rainfall. Memory cue: humidity is the raw material, condensation is the joining process, and precipitation is the falling result.

Related tags

GeographyHumidityRainfallCloud FormationEvaporationAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereClass 12 Mcq

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