Which one of the following would cause stream rejuvenation?
A)sea level rises
B)a shift from downcutting to lateral cutting
C)the land is uplifted
D)when unstable distributaries in a delta are abandoned

Question

Quizplus · Accepted Answer

Stream rejuvenation occurs when a stream's base level is lowered, either by tectonic uplift or a drop in sea level. This creates a steeper gradient and a faster flow rate, leading to downcutting and the formation of a narrow V-shaped valley. Choice A, sea level rise, would have the opposite effect by raising the base level and slowing down the stream. Choice B, a shift from downcutting to lateral cutting, is not a mechanism for stream rejuvenation but rather a response to it. Finally, choice D, the abandonment of unstable distributaries in a delta, refers to a different process altogether and is not related to stream rejuvenation.

Which One of the Following Would Cause Stream Rejuvenation