Lower Course Of A River Flashcards

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1
Q

Describe the lower course of a river

A

wider
Deeper
Valley floor is flat
Floor is wide
The river meanders
Flat land either side of river

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2
Q

What is the main process in the lower course of a river?

A

Deposition
A rivers lower course has lost a lot of energy

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3
Q

What landforms are in the lower course by deposition?

A

Floodplains
Levees

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4
Q

What is a floodplain

A

An area of land which the river flows over and is very flat.
During times of flood, a river will overflow its banks and cover the surrounding land.

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5
Q

What is a levee?

A

A natural embankment of deposited material.
Sometimes strengthened to protect the surrounding area from floods.

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6
Q

What is silt and how is it made

A

Whenever a river floods, a thin layer of material called “silt” spreads over the floodplain

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7
Q

How can a levee form?

A

Larger material is deposited along the banks
Larger particles dropped first as the water doesn’t have enough energy to carry them. This builds up to form a levee

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