Changing Enviroments Rivers Flashcards
Types of erosion
Hydraulic, abrasion, attrition, corrosion
What is hydraulic action
Erosion caused when water and air are formed into gaps in rocks and/or soil
What is abrasion
Erosion of landscape caused by friction. The water uses rocks and pebbles to do the work of erosion
What is attrition
A type of erosion where rocks smash against each other making them smaller and more rounded
What is corrosion
The wearing of the landscape by chemicals processes such as solution
Types of transportation
Traction, saltation,suspension, solution
What is traction?
Large boulders moving along river
What is saltation?
Rocks moving along the river
What is suspension?
Small pebbles moving along the river
What is solution
Dissolved minerals moving along the river
what is deposition?
This is where the river drops or leaves behind material that it has been carrying
What is an ox-bow lake
A horseshoe shaped cut off from the main river. Caused by erosion
Floodplain
The wide/flat valley floor of a river where silt is deposited during time of flood