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GCSE Geography > River erosion landforms > Flashcards

River erosion landforms Flashcards

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1
Q

Distinctive river landforms in upper course of river

A

Waterfalls, interlocking spurs

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2
Q

Distinctive river landforms in the lower course of river

A

meanders and ox-bow lakes

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3
Q

How are waterfalls formed

A

Hard rock layer above soft rocks layer
Water undercuts soft rock (Hydraulic action/abrasion)
Hard rock collapses due to gravity

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4
Q

how are gorges formed

A

Gradual retreat of waterfall over hundreds or thousands of years

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5
Q

How are meanders formed

A

Greatest velocity of particles in water swing from side to side causing erosion on outside bend and deposition on inside bend

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6
Q

How are Ox-bow lakes formed

A

Meanders start to erode towards each other until it breaks through and the deposition forms and ox-bow lake

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GCSE Geography (53 decks)

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