Processes of erosion Flashcards
1
Q
What is Hydraulic action
A
pressure of water breaks rock particles away from the bed and banks. Strongest in rapids and waterfalls
2
Q
What is Abrasion
A
eroded pieces of rock in the water scrape and rub against the bed and banks, removing material.
3
Q
What is Attrition
A
eroded rocks smash into each other and break into smaller fragments. Their edges also get rounded off
4
Q
What is Corrosion
A
dissolving of rock by chemical processes, such as limestone and chalk being dissolved by weak acids
