river landforms Flashcards
1
Q
What are features of the upper course?
A
Waterfalls and gorges
2
Q
Why do waterfalls and gorges form?
A
Because of the dominance of vertical erosion near the source of a river
3
Q
What are features of the middle course?
A
Meanders and oxbow lakes
4
Q
Why do meanders and oxbow lakes develop?
A
Because further down the river lateral erosion and deposition become more important
5
Q
What are features of the lower course?
A
Floodplains and levees
6
Q
Why do floodplains and levees become a key aspect of the landscape?
A
Because deposition is the most significant process as the river gets nearer to the mouth
