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What can be the combined reason for heavy rainfall in coastal and hilly areas during monsoon?

Answer and explanation

Correct answer: Abundant moisture from the sea and uplift of moist air by mountains

Monsoon winds pick up water vapour from the sea before reaching the coast. When this moist air strikes a mountain slope and is forced to rise, it cools at higher altitude, condenses, and produces rainfall. Thus, abundant marine moisture together with orographic uplift causes heavy rain in coastal hilly regions. In option B, descending air generally warms and becomes drier, so it does not promote heavy rainfall. Exam tip: Remember the sequence: moist air rises, cools, condenses, and rains.

Related tags

Indian MonsoonOrographic RainfallCoastal ClimateMountain RainfallMoisture Laden WindsClass 9 GeographyClimateGeography

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