How does running water activities as an agent of denudation
Answers
Answer:
Rivers flow from high to low altitudes and act as ‘means’ of erosion, transportation, and deposition of various particles.
1. Erosion:
Erosion by any river is very important aspect for mankind. Rate of erosion is higher in mountains as compared to that in plains. Rivers carry the particles/ debris formed by weathering and deposit it at another place. The particles that rivers carry are stones, rocks, sand particles etc., which help in erosional process.
According to William Morris Davis the cycle of erosion is, “the period of time during which an uplifted land mass undergoes its transformation by the process of land sculpture ending into a low featureless plain”.
ADVERTISEMENTS:
Erosion may be divided into two parts:
1. Vertical Erosion:
This is also known as downward (cutt) erosion, which results in deepening of valley. This, erosional activity is dominantly vertical. Rivers flow from mountains to low slopes, eroding the bed rocks vertically. Because the flow is fast and slope (gradient) are steep, this process goes on, till the river reaches its mouth and results in formation of ‘V’ shaped valleys.
2. Lateral Erosion:
ADVERTISEMENTS:
This is a sideway erosional process. It starts when river enters from mountains to plains. Speed of water/flow decreases and river starts ‘sideway’ erosion and further it leads to widening of valley.
Explanation: