The Long Profile of a River Flashcards

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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?
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 do discharge and velocity increase downstream?
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Discharge increases downstream because of additional water from tributaries. Velocity increases due to the additional water from tributaries and less water is in contact with the bed and banks so there is less friction.

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Why do discharge and velocity increase downstream?
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 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?




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