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Flashcards covering key vocabulary and concepts related to river processes, including erosion, transportation, and deposition.
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Erosion
The main job of a river in its upper course, where the river bed is steepest and roughest.
Transportation
How a river moves material or its load, typically occurring in the middle part of the river.
Traction
When large stones are moved by the river current along the bed.
Saltation
When sand-sized particles are bounced along the bed in a leap-frog movement.
Suspension
When very small particles are carried with the water flow.
Solution
When minerals are dissolved in the water.
River Energy and Erosion/Transportation
When a river has more energy it erodes more and transports larger pieces of rock, especially during floods.
Deposition
When a river loses energy and leaves behind larger rocks on the bed of its channel.
Sediment
The deposited material as a river loses energy and drops its load.
River's Long Profile - Upper Course
Erosion is the main process.
River's Long Profile - Middle Course
Both erosion and deposition occur.
River's Long Profile - Lower Course
Deposition wins out as the river loses energy.
V-shaped valley
Result of the river eroding downwards in the upper course.
Floodplain
Forms where the river floods time after time, as the banks are eroded and the channel widens.