Process relating to erosion transport and deposition by a river.
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What way is lateral erosion?
Left and right
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What way is vertical erosion?
Down
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What is the source of the river?
The beginning of the river
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What is the mouth of the river?
The end of the river leading out towards a lake or sea
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What is the long profile of a river?
Long profile Shows the change in the height of the river and how the gradient changes along its course
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What is the cross profile of a river?
Shows the cross section in a river
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What is deposition?
When a river loses energy
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What is a earthquake?
When 2 plates collide together therefore use force to pass each other; shaking the land
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How do people manage earthquakes?
Earthquake Resistant Buildings are built .Emergency Plans are drawn up and drills are done on occasions. Seismometers are also used to detect earthquakes.
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Give 2 examples of earthquakes?
Nepal earthquake (25th April 2015). Christchurch earthquake Feb 22 (2011)
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What is organic farming?
An alternative way to produce food banning the use of fertilisers and pesticides, and replace them with more ‘natural’ methods.
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Benefits of organic farming?
No pesticides. Made locally. Taken love and care to make. More nutrition. Helps enviroment
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Disadvantages of organic farming?
Costs more, lots more work to do, only made in small batches.
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What is a dam?
A barrier constructed to hold back water and raise its level, forming a reservoir.
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What is a reservoir?
A large natural or artificial lake used as a source of water supply.
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What are you going to do on this test?
NAIL IT! :)
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What is a waterfall?
The sudden descent of a river or stream over a vertical or very steep slope in it bed.
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How does a waterfall erode?
1) Tiny pebbles in the water eroding the softer rock nearer the bottom.2) The above rock is unsupported. 3) Gravity pulls down excess rock that makes the waterfall straight again. 4) Repeat.
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What is a meander?
A bend or curve in a river.
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What is the main current?
The movement of the water.
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What is erosion on meander bends?
The outside of the bends where the water is most likely to erode
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What is deposition on meander bends?
The inside of the bends where the water is least likely to erode.
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How do you form an oxbow lake?
1) A bend in the river pushes the fastest flow of water to the outside. 2) Overtime it creates a swans neck effect. During a flood the path breaks creating a break. 3) The straight lake separates from the curved lake. Volia! Oxbow lake!
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How are levees made?
1) small carried materials brush on the river banks. 2) Materials layer on top. 3) levees!
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What are Estuaries?
The end of the river that is full of mud and silt.
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