River Processes Flashcards
_______________ Helps Shape River Valleys.
Weathering.
Weathering Breaks Down ________ on the Valley Sides.
Rocks.
Features of Freeze-Thaw Weathering?
- Happens when the Temperature Alternates Above and Below 0°C.
- Water Gets Into Rock that has Cracks.
- Repeated Freezing and Thawing Widens the Cracks and Causes the Rock to Break Up.
Four Processes of Erosion?
- Hydraulic Action.
- Abrasion.
- Attrition.
- Solution.
What is Hydraulic Action?
The Force of the Water Breaks Rocks Particles Away from the River Channels.
What is Abrasion?
Eroded Rocks Picked Up By The River Smash into Each Other and Break into Smaller Fragments.
What is Attrition?
Eroded Rocks Picked Up the River Smash into Each Other and Break into Smaller Fragments.
What is Solution?
River Water Dissolves Some Types Of Rock.
Transportation is the Movement of ___________ Material.
Eroded.
What are the Four Processes of Transportation?
- Traction.
- Suspension.
- Saltation.
- Solution.
What is Traction?
Large Particles like Boulders are Pushed Along the River Bed by the Force of the Water.
What is Saltation?
Pebble-Sized Particles are Bounced Along the River Bed by the Force of the Water.
What is Suspension?
Small Particles like Silt and Clay are Carried Along by the Water.
What is Solution?
Soluble Materials Dissolve in the Water and are Carried Along.
What is Deposition?
When a River Drops Eroded Material.
