What does a knick point indicate during river rejuvenation?
Answer and explanation
Correct answer: A sudden change in the slope of a river profile
The governing concept is river rejuvenation. When uplift occurs or the base level falls, a river gains renewed vertical erosive power and attempts to cut its valley downward. The boundary between the older and newly incised profiles appears as a knick point, a sharp break in channel gradient that may migrate upstream. Therefore option D is correct; the other choices describe aeolian, cave, or glacial features.
Frequently asked questions
What is the correct answer to this question?
A sudden change in the slope of a river profile
Why is this the correct answer?
The governing concept is river rejuvenation. When uplift occurs or the base level falls, a river gains renewed vertical erosive power and attempts to cut its valley downward. The boundary between the older and newly incised profiles appears as a knick point, a sharp break in channel gradient that may migrate upstream. Therefore option D is correct; the other choices describe aeolian, cave, or glacial features.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Bills of Exchange.
