Where do alluvial fans mostly form?
Answer and explanation
Correct answer: In front of a stream emerging from mountains to plains
The correct answer is D. A stream leaving a narrow, steep mountain valley reaches a broader plain where its gradient and velocity decrease abruptly. It can no longer carry all its gravel, sand, and silt, so the material is deposited outward from the valley mouth in a spreading, fan-shaped body called an alluvial fan. Deep sea floors, glacial-trough centres, and vertical rock walls do not provide this characteristic change in slope and flow energy.
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What is the correct answer to this question?
In front of a stream emerging from mountains to plains
Why is this the correct answer?
The correct answer is D. A stream leaving a narrow, steep mountain valley reaches a broader plain where its gradient and velocity decrease abruptly. It can no longer carry all its gravel, sand, and silt, so the material is deposited outward from the valley mouth in a spreading, fan-shaped body called an alluvial fan. Deep sea floors, glacial-trough centres, and vertical rock walls do not provide this characteristic change in slope and flow energy.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Bills of Exchange.
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