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What is hydraulic action?
Hydraulic action is the force of the water breaking rock particles away from the river channel.
What is abrasion?
Abrasion is when eroded rocks picked up by the river scrape and rub against the channel, wearing it away. --Most erosion happens by abrasion.
What is attrition?
Attrition is when eroded rocks picked up by the river smash into each other and break into smaller fragments. The edges also get rounded off as they rub.
What is solution?
River dissolves some types of rocks . e.g chalk and limestone.
What types of rocks are dissolved by rivers?
Chalk and limestone.
What are the four processes of erosion?
Hydraulic Action, Abrasion,Attrition, Solution.
What are the four processes of transportation?
The four processes of transportation are: traction, saltation, suspension and solution.
What is traction?
Traction is when large particles like boulders are pushed along the river bed by the force of the river.
What is saltation?
Saltation is when pebble sized particles are bounced along the river bed by the force of the water.
What is suspension?
Suspension is when small particles like silt and clay are carried along by the water.
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