The Long Profile of a River Flashcards

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Why is the cross profile of a river valley narrow and steep sided in the upper course?
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It becomes narrow and steep-sided in the upper course due to vertical erosion.

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Why is the cross profile of a river valley narrow and steep sided in the upper course?
In the middle course of the river valley floor becomes wider why is this?
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The increase in lateral (sideways) erosion.

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In the middle course of the river valley floor becomes wider why is this?
Why does the long profile of a river become concave in the middle course?
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The gradient of the long profile becomes more concave as vertical erosion reduces.

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Why does the long profile of a river become concave in the middle course?
What is the long profile of the river?
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The long profile shows the gradient of the river from its source to mouth.

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What is the long profile of the river?
Why does the river channel become wider and deeper with distance downstream?
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The river channel becomes deeper due to the increase in discharge and wider due to lateral erosion.

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Why does the river channel become wider and deeper with distance downstream?




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