Lower course landscape 2 (Edexcel GCSE Geography A): Flashcards
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What are meanders?
What are meanders?
Large sweeping bends in the middle/lower courses of rivers
Type of erosion creating meanders
Type of erosion creating meanders
Lateral erosion (sideways)
Water flow speed on outer bend of meander
Water flow speed on outer bend of meander
Faster
What forms on outer bend due to erosion?
What forms on outer bend due to erosion?
River cliff (steep bank)
Water flow speed on inner bend of meander
Water flow speed on inner bend of meander
Slower
What forms on inner bend due to deposition?
What forms on inner bend due to deposition?
Point bar
Key principle: fast flow causes...
Key principle: fast flow causes...
Erosion (on outer bends)
Key principle: slow flow causes...
Key principle: slow flow causes...
Deposition (on inner bends)
What are ox-bow lakes?
What are ox-bow lakes?
Curved lakes formed when meanders get cut off from main river
How do ox-bow lakes form?
How do ox-bow lakes form?
Meander neck narrows, water cuts through, old meander isolated
Why called ox-bow lakes?
Why called ox-bow lakes?
Curved shape resembles U-shaped ox yoke/bow
Define river cliff
Define river cliff
Steep bank on outer bend created by erosion
Define point bar
Define point bar
Deposited material on inner bend, gently sloping