What is the common initial shape of a valley formed by a river?
Answer and explanation
Correct answer: V-shaped valley
The governing concept is fluvial erosion. In the upper course, a river has a steep gradient and strong vertical, or downward, erosion. This cuts the bed more rapidly than the sides and produces a narrow valley with a V-shaped cross-section. Therefore, option A is correct. A U-shaped valley is mainly produced by glacial erosion, while a rounded mound and a sand dune are not river-cut valley forms.
Frequently asked questions
What is the correct answer to this question?
V-shaped valley
Why is this the correct answer?
The governing concept is fluvial erosion. In the upper course, a river has a steep gradient and strong vertical, or downward, erosion. This cuts the bed more rapidly than the sides and produces a narrow valley with a V-shaped cross-section. Therefore, option A is correct. A U-shaped valley is mainly produced by glacial erosion, while a rounded mound and a sand dune are not river-cut valley forms.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Financial Statements – II. Topic: Common Adjustments.
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