A rapid or waterfall is known as a
A) longitudinal profile.
B) base level.
C) cutbank.
D) knickpoint
E) graded stream.

Name: A rapid or waterfall is known as a A) longitudinal profile. B) base level. C) cutbank. D) knickpoint E) graded stream.
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Question

Quizplus · Accepted Answer

A knickpoint is a point on a river or stream where there is a sharp change in the gradient or slope of the stream bed. This abrupt change in slope creates a waterfall or rapid. Therefore, the correct answer is D, knickpoint.

A Rapid or Waterfall Is Known as a