The River Valley
- Created by: Ellie
- Created on: 02-06-13 11:00
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the river changes throughout its course
course: path of river. upper, middle and lower.
rivers: erode landscape; wear down, transport load, then deposit elsewhere.
shape of valley & channel depends on whether erosion or deposition is dominant process.
Upper
Steep
V-shaped valley, steep sides, narrow/shallow channel.
Middle
Medium
Gently sloping valley sides, wider/deeper channel.
Lower
Gentle
Very wide, almost flat valley sides. Wide/deep channel.
Vertical erosion:
Deepens valley & channel, making it v-shaped. Dominant in upper course.
Lateral erosion:
Widens the river valley & channel. Dominant in middle and lower courses.
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