Erosion, Transportation and Deposition

Erosion, Transportation and Deposition

1. There are four processes of erosion

   • 1) Hydraulic - The forces of the water breaks rock particles away from the river channel. 2) Abrasion - Eroded rocks picked up by the river scrape and rub against the channel, wearing it away. Most erosion happens by abrasion. 3) Attrition - Eroded rocks picked up by the river smash in to each other and break into smaller fragments. 4) Solution - River water dissolves some types of rock e.g. chalk and limestone

2. Transportation is the movement of eroded material

   • 1) Traction - large particals like boulders are pushed along the river bed by the force of the water 2)Saltation - pebble-sized particales are bounced along the river bed by the force of the water 3) Suspension - small particales like silt and clay are carries along the water 4)Solution - soluble materials dissolve in the water and are carried along

3. Deposition is when a river drops eroded material

   • 1) Deposition is when a river drops the eroded material it's transporting. 2) It happens when a river slows down 3) There are a few reasons why rivers slow down and deposit material