Question

what do you mean by latersal erosion of a River

Answer 1

It makes the river channel deeper.

Answer 2

The energy in a river causes erosion. The bed and banks can be eroded making it wider, deeper and longer.

Head ward erosion makes a river longer. This erosion happens near its source. Surface run-off and and through flow causes erosion at the point where the water enters the valley head.

Vertical erosion makes a river channel deeper. This happens more in the upper stages of a river (the V of vertical erosion should help you remember the v-shaped valleys that are created in the upper stages).

Lateral erosion makes a river wider. This occurs mostly in the middle and lower stages of a river.

There are four main processes of erosion that occur in rivers. These are:

hydraulic action; abrasion / corrosion;attrition; and corrosion.