Section 1 - Rivers (Erosion) Flashcards
1
Q
What is hydraulic action?
A
The force of the water breaks rock particles away from the river channel
2
Q
What is corrasion/abrasion?
A
Eroded rocks picked up by the river scrape and rub against the channel, wearing it away
3
Q
What is the most common process or erosion?
A
Corrasion/abrasion
4
Q
What is attrition?
A
Eroded rocks get picked up by the river and smash into each other and break into smaller fragments, their edges get rounded off as they rub together
5
Q
What is corrosion?
A
River water dissolves some types of rock chemically, ex. chalk and limestone
6
Q
Name the 4 processes of erosion
A
- hydraulic action
- corrasion/abrasion
- attrition
- corrosion
7
Q
What is erosion?
A
The breaking down of materials in a river such as rocks
