Rivers

  • Created by: LucyvU
  • Created on: 28-01-18 18:41
Q.Name the 4 types of erosion.
A. Hydraulic Action, Abrasion, Attrition and Solution.
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Q. What is Hydraulic Action
The force of the water breaks rock particles away from the river channel
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Q. What is Abrasion?
A. Eroded rocks picked up by the river scrape and rub against the channel wearing it away.
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Q. What is Attrition?
A. Eroded rocks picked up by the river smash into each other and break into smallerments fragments.
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Q. What is Solution?
A. River water dissolves some types of rock e.g. chalk and limestone.
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Q. Name all 4 types of Transportation.
A. Traction, Saltation, Suspension and Solution.
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Q. What is Traction?
A. Large Particles are pushed along the river bed by the force of water.
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Q. What is Saltation?
A. Pebble sized particles are bounced along the river bed by the force of water.
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Q. What is Suspension?
A. Small particles are carried along with the water.
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Q. What is Solution?
A. Soluble materials dissolve in the water and are carried along.
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Q. What is Deposition?
A. Is when a river drops the load it has been transporting. This happens when the velocity of the river slows.
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Q. Features of the upper course.
A. They have a steep gradient, v shaped valley with steep sides, narrow and shallow channels.
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Q. Features of the middle course.
A. Medium gradient, gently sloping valley sides, widder and deeper channels
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Q. Features of the lower course.
A. Gentle gradient, very wide basically flat valley, very wide and deep channels.
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Q. What is a long profile of a river?
A.It shows you how the gradient changes over the different courses.
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Q. What is a cross profile of a river?
A. It shows you the cross section of a river .
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Q. What is Lateral Erosion?
A. Lateral Erosion widens the river valley during meanders. More common in the middle and lower courses.
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Q. What is Vertical Erosion?
A.This deepens the river valley making it v shaped. It is more common in the upper course.
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Q. What is the source of a river?
A. It is this the original doint from which a river flows .
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Q. What is the mouth of a river?
A. It is the point where the river meets the sea.
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Other cards in this set

Card 2

Front

Q. What is Hydraulic Action

Back

The force of the water breaks rock particles away from the river channel

Card 3

Front

Q. What is Abrasion?

Back

Preview of the front of card 3

Card 4

Front

Q. What is Attrition?

Back

Preview of the front of card 4

Card 5

Front

Q. What is Solution?

Back

Preview of the front of card 5
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Comments

Harvey Bass

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Amazing! Great for a quick recap

Immy3607

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so helpful for revision!

Lena2002

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This set was really helpful, thank you very much

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