What is an example of a river landform found in the lower course?
An estuary
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What is attrition?
Where rocks in a river's load hit each other, making them less angular and smaller
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When is a gorge formed?
When a waterfall reatreats
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What is the discharge of a river?
The volume of water in a river
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What is the lag time on a hydrograph?
The tiem between the peak rainfall and the peak discharge
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How does vegetation (forests etc) help prevent flooding?
It intercepts the precipitation
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How is an ox-bow lake formed?
The river's meanders erode towards each other and the meander neck narrows, due to lateral erosion, until it breaks. Deposition then separates the meander from the river.
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What is a physical cause of flooding?
Prolonged rainfall
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What is soft engineering?
Working with natural river processes to manage flood risk
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