Medium gradient- gently sloping valley sides- beginnings of a floodplain-wider-deeper channel
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Lower course features
Very wide-almost flat- wide floodplain- Very wide- deep channel
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What is vertical erosion
when it deepens the river channel downwards making it v-shaped. dominant in the upper course. High turbulence causes rough angular rocks to scrape along the river bed.
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What is lateral ersosion
sideways erosion widens the river valley. Dominant in the middle and lower course
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What are the 4 main types of erosion?
-Hydraulic action -Attrition -Abrasion - Solution
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Other cards in this set
Card 2
Front
Give an example of a river drainage basin
Back
Mississippi river drainage basin
Card 3
Front
In order to find the steepness of a river which profile would you use?
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