The Long Profile of a River Flashcards
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?
Where is the steepest gradient in the long profile of a river?
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The steepest gradient in the long profile of a river is found in the upper course near to the source.
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Where is the steepest gradient in the long profile of a 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?
