A graded river is one that has achieved a balance between erosion and deposition, resulting in a smooth, concave-up profile.It represents the ideal, stable state of a mature river.
22.
What is the role of vegetation in slope stability?
Vegetation enhances slope stability by reinforcing the soil with roots and reducing surface water through transpiration.This helps prevent erosion and landslides.
23.
A flat-topped mountain formed by differential erosion is called?
The bed load consists of larger particles like sand and gravel that move along the bottom of a river channel.Fine materials are carried in suspension or solution.
An inselberg is an isolated hill or mountain rising abruptly from a flat plain, often found in arid or semi-arid regions.It is formed by long-term erosion of surrounding softer rocks.
A floodplain is a flat area adjacent to a river that experiences periodic flooding and sediment deposition.It is rich in nutrients and ideal for agriculture.
29.
Which process causes downcutting of river valleys?
An oxbow lake forms when a meander loop is cut off from the main channel, creating a U-shaped lake.It results from river course change due to erosion and deposition.