Why is rainfall relatively higher on the western slopes of the Western Ghats?
Answer and explanation
Correct answer: Moist winds of the Arabian Sea branch strike the mountains
The governing concept is orographic, or relief, rainfall. During the southwest monsoon, the Arabian Sea branch carries moisture toward the west coast of India. When these winds meet the steep western face of the Western Ghats, they are forced to rise. Rising air expands and cools; water vapour then condenses and produces heavy rainfall on the windward western slopes. Therefore, option A gives the correct cause. The Ganga does not form a delta on the Western Ghats, Himalayan snow does not directly account for this seasonal rainfall, and the Thar Desert is far to the northwest and is not the source of these moist winds. The eastern leeward side is comparatively drier.
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What is the correct answer to this question?
Moist winds of the Arabian Sea branch strike the mountains
Why is this the correct answer?
The governing concept is orographic, or relief, rainfall. During the southwest monsoon, the Arabian Sea branch carries moisture toward the west coast of India. When these winds meet the steep western face of the Western Ghats, they are forced to rise. Rising air expands and cools; water vapour then condenses and produces heavy rainfall on the windward western slopes. Therefore, option A gives the correct cause. The Ganga does not form a delta on the Western Ghats, Himalayan snow does not directly account for this seasonal rainfall, and the Thar Desert is far to the northwest and is not the source of these moist winds. The eastern leeward side is comparatively drier.
Which subject and chapter does this question cover?
This is a Class 10 General Knowledge question. Chapter: Indian Geography. Topic: Mountains and Plateaus of India.
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