The topographic lowering of a stream channel through stream erosion is called
A) a braided stream.
B) a graded stream.
C) degradation.
D) a meandering stream.
E) aggradation.

Question

Quizplus · Accepted Answer

The process of stream erosion that results in a lowering of the stream channel is called degradation. This is the only option that specifically refers to the lowering of the stream channel. A graded stream refers to a stream that is in balance with the sediment load it is carrying, and aggradation refers to the opposite process of stream buildup, both of which do not necessarily indicate a lowering of the channel. Braided and meandering streams refer to the pattern or shape of the stream channel and do not necessarily indicate any change in elevation.

The Topographic Lowering of a Stream Channel Through Stream Erosion