A sudden convex break in a river long profile may strongly indicate which process?
Answer and explanation
Correct answer: River rejuvenation and retreat of a knickpoint
A sharp break or convexity in a river’s longitudinal profile is a knickpoint, where channel gradient changes abruptly. It can develop after uplift, a fall in base level, or renewed erosional power; the knickpoint then migrates upstream. Thus option A correctly links the profile break with rejuvenation and knickpoint retreat. The other choices describe coastal, karst, or aeolian processes.
Frequently asked questions
What is the correct answer to this question?
River rejuvenation and retreat of a knickpoint
Why is this the correct answer?
A sharp break or convexity in a river’s longitudinal profile is a knickpoint, where channel gradient changes abruptly. It can develop after uplift, a fall in base level, or renewed erosional power; the knickpoint then migrates upstream. Thus option A correctly links the profile break with rejuvenation and knickpoint retreat. The other choices describe coastal, karst, or aeolian processes.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Bills of Exchange. Topic: Introduction and Concepts.
