Geography
Answer
The factors which affect the work of a river are-
Velocity of water — Erosion and transportation are both maximum when the velocity of water is high. Deposition takes place when the velocity of water is low.
Volume of water — The larger the volume of water, the greater is the power of erosion and transportation. Deposition takes place better when there is reduced volume of water and when the load is greater.
Load — The load of the river does all the work of erosion and deposition. Mass wasting, deepening of river valleys and formation of landforms depend on the load a river carries.
Related Questions
Give a geographical reason for each of the following:
(i) Erosion is the dominant activity of a river in its upper course.
(ii) Landforms of deposition are more prominent in the middle course of a river.
(iii) All the rivers do not form deltas.
Describe the work of wind erosion and state two important landforms of wind erosion.
Describe the three stages of a river.
Give a geographical reason for each of the following:
(i) The effects of wind erosion are more pronounced in desert areas.
(ii) Migratory sand dunes are uncertain and dangerous.
(iii) Long rooted trees and sand holding grasses are grown bordering fields near deserts.