Geography: rivers and coasts

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How is a V-Shaped Valley formed?
Vertical erosion in upper and lower course of the river. steep river, gravity pulls it downhill so it erodes deep into the soil. the rocks on the side slide down to create a 'V' shape
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How are Interlocking Spurs formed?
Like a zip. river erodes deeply in upper course (vertical erosion) but don't have enough energy to erode harder rocks so the river flows around them
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How are Meanders formed?
Water in a river has slow and fast areas of flow so there is different amount of erosion and deposition. the current is faster on the outside edge of the river so it erodes more, creating a bend over time
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How is an Oxbow Lake formed?
The same starting process as a meander, but when the bend becomes too tight the current slows down and much more deposition occurs. when a storm happens, a new fast channel is eroded straight past,cutting the old bend which gets left behind as a lake
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Other cards in this set

Card 2

Front

How are Interlocking Spurs formed?

Back

Like a zip. river erodes deeply in upper course (vertical erosion) but don't have enough energy to erode harder rocks so the river flows around them

Card 3

Front

How are Meanders formed?

Back

Preview of the front of card 3

Card 4

Front

How is an Oxbow Lake formed?

Back

Preview of the front of card 4

Card 5

Front

geography

Back

Preview of the front of card 5

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