When a river reaches a base level,its forward velocity rapidly decelerates as it enters a larger body of standing water and ________ is formed.
A)an estuary
B)an alluvial terrace
C)a delta
D)a stream terrace
E)a levee

Question

Quizplus · Accepted Answer

A delta is formed when a river reaches a base level, such as a lake or an ocean, and deposits sediment in a fan-like shape. The forward velocity of the river rapidly decelerates upon entering the larger body of water, causing sediment to be dropped and deposited in the area. An estuary is a partially enclosed coastal body of water where freshwater from a river meets the saltwater from an ocean or sea. An alluvial terrace is a flat-topped landform that borders a stream and is formed over time by sediment deposition. A stream terrace is a flat or gently sloping landform that is adjacent to a stream and is formed by either natural erosion or human activities, such as construction or mining. A levee is a raised bank of sediment that runs parallel to a river or other body of water and is formed by the accumulation of sediment during flooding events.

When a River Reaches a Base Level,its Forward Velocity Rapidly