Environment And Road Safety Education And Violence Against Women And Children And Drug Abuse 2020 Exam With Answers

Practice Mode:
22.

Removal of soil as a thin layer due to fast moving water is known as

A: Rill erosion
B: Gully erosion
C: Sheet erosion
D: Slip erosion

The answer is: C

Explanation

The removal of soil as a thin layer due to fast-moving water is known as:

(A) Sheet erosion.

Sheet erosion refers to the removal of a thin layer of soil from the surface of the land by water flowing over it. It occurs when water moves across the land in a sheet-like manner, rather than concentrated in channels or gullies. Sheet erosion is common on sloping land or areas with heavy rainfall, where the force of water is sufficient to detach and transport soil particles.

Sheet erosion can lead to the loss of topsoil, which is the most fertile and productive layer of soil. It can also contribute to sedimentation in rivers, lakes, and other water bodies, leading to water quality issues and ecological impacts.

Preventing sheet erosion involves implementing soil conservation practices such as contour plowing, terracing, and the use of cover crops to reduce water runoff and promote soil stability. These measures help to retain the soil in place, minimize erosion, and preserve the integrity of the land for sustainable agriculture and ecosystem health.