Floodplains
A)are erosional features located within a depositional feature.
B)are associated with surface erosion.
C)are generally filled with layers of alluvium.
D)are covered by a surface layer of coarse material including cobbles and gravel.
E)prevent aggradation of the river.

Question

Quizplus · Accepted Answer

Floodplains are typically formed by the deposition of alluvium, which includes layers of sediment deposited by the river during floods. This deposition creates a flat surface that is adjacent to the river channel, allowing water to spread out during floods.

Note: A is incorrect as floodplains are depositional features, not erosional. B, D, and E are also incorrect as they do not accurately describe floodplains.