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RIVERS - Coggle Diagram
RIVERS
HOW WATER REACHES A RIVER
4 THROUGHFLOW
5 GROUNDWATER\GROUNDWATER FLOW
INTERCEPTION
2 SURFACE RUN-OF (OVERLAND FLOW)
3INFILTRATION
THE RIVER CHANNEL
Meandering
Straight
Braided
THE UPPER COURSE OF A RIVER
The place where a river starts it's course is known as the
source
The river is carrying out
vertical erosion
Rapids
are common features in the upper course of a river
Potholes
are smooth, rounded hollows formed in the bedrock of the river bed by vertical erosion
RIVER PROCESSES
EROSION
Material is worn away and removed from it's channel
HEADWARD EROSION
LATERAL EROSION
VERTICAL EROSION
DEPOSITION
When the river no longer has the energy to carry it's load is dropped the river bd
The
lightest material
is deposited last
The
largest material
is deposited first
Happens when
There is a decrase in river flow as water drains away after heavy rain
DISCHARGE
The river meets the sea or lake forming a delta
The river flows more slowly on the inside of bends
There is a decrase in gradient
