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Rivers
River Stuff
24
Geography
8th Grade
06/15/2006

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Cards

Term
What is the source?
Definition
The point where the river begins
Term
What is the tributary?
Definition
When a small stream flows into the main river.
Term
The Confluence is.....?
Definition
The place where the tributary joins the main river.
Term
What is the moth?
Definition
The point where the river ends
Term
What are the processes of erosion?
Definition
Atrrition, Hydraulic Action,Corrasion,Corrosiom
Term
What is attrition?
Definition
when material is moved along the river bed, it collides and is broken up
Term
What is corrasion?
Definition
fine material rubs against the river bank and the bank is worn away by the sandpapering affect called abrasion
Term
What is Corrosion?
Definition
Some of the rocks that form the banks are dissolved by acids in the water.
Term
What is hydraulic action?
Definition
The sheer force of water hitting the river banks
Term
What are the processes of transportation?
Definition
Saltation,Solution,Suspension and Traction
Term
What is traction?
Definition
Large boulders are rolled along the river floor
Term
What is saltation?
Definition
Small stones are bounced along the river bed in a leap frog motion.
Term
What is suspension?
Definition
Fine material which is light enough to be carried by the river. This disscolors the water
Term
What is Solution?
Definition
Dissolved material transported by the river.
Term
What is the watershed?
Definition
Seperates the two river basins
Term
What is the river beach?
Definition
Main deposition occurs (inside of the bend)
Term
What is a River Cliff?
Definition
Main erosion happens
Term
What is a leevie?
Definition
They are formed when rivers overflow over the bank. This build up a raised river bank called a leevie.
Term
What are braided channles?
Definition
When load is dropped into the rivers, this causes ostructions and it divides the flow around them.
Term
What are raised beds?
Definition
When load is dropped into low energy and volume rivers. The bed raises up and the the river capacitiy decreases.
Term
What is a gorge?
Definition
When the waterfall is eroded backwards
Term
What is a waterfall?
Definition
When hard rock lies on top of soft rock.
Term
What is moraine?
Definition
A type of landform deposited by the glaicer.
Term
What is a meander?
Definition
A river with bends
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