ICSE BoardEnglish MediumSTD 9GeographyHumidity3 Marks
Question
State the three types of rainfall.
✓
Answer
Relief Rainfall – It occurs from the cooling of warm moist air which ascends above the mountain barrier lying in the direction of the prevailing winds.
Cyclonic or Frontal Rainfall – It occurs when warm and cold air masses confront each other, the warmer air generally climbs above the colder air.
Convectional Rainfall – Ascending currents of hot and humid air causes condensation of the clouds, resulting in heavy rainfall.
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