Why does the western slope of the Western Ghats receive more rainfall?
Answer and explanation
Correct answer: Because of moist monsoon winds from the Arabian Sea branch
The governing concept is the windward and leeward effect of a mountain barrier. The Arabian Sea branch of the southwest monsoon transports moisture toward the western coast. The Western Ghats stand across this path, so the moist air rises along their western, or windward, slope. As the air rises it cools, condensation increases, and substantial orographic rainfall occurs. Hence option B is correct. The Bay of Bengal is not the immediate source of the winds responsible for this west-coast pattern. Sandy winds from the Thar are dry and cannot explain heavy rain, while Himalayan glaciers are not a direct source of monsoon precipitation on the Western Ghats. The eastern side lies in a relative rain-shadow region.
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What is the correct answer to this question?
Because of moist monsoon winds from the Arabian Sea branch
Why is this the correct answer?
The governing concept is the windward and leeward effect of a mountain barrier. The Arabian Sea branch of the southwest monsoon transports moisture toward the western coast. The Western Ghats stand across this path, so the moist air rises along their western, or windward, slope. As the air rises it cools, condensation increases, and substantial orographic rainfall occurs. Hence option B is correct. The Bay of Bengal is not the immediate source of the winds responsible for this west-coast pattern. Sandy winds from the Thar are dry and cannot explain heavy rain, while Himalayan glaciers are not a direct source of monsoon precipitation on the Western Ghats. The eastern side lies in a relative rain-shadow region.
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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