Rivers
Help!
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| What are the features of the upper course of a river? | -v shaped valley
-interlocking spurs
-waterfalls
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| What are the features of the middle course of a river? | -meanders
-wide valleys
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| What are the features of the lower course of a river? | -ox bow lakes
-flood plains
-deltas
-levees
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| What is hydraulic action? | power of the moving water erodes the bed and banks of the river
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| What is abrasion? | broken material (from hydraulic action) carried by river (known as load) is thrown against bed and banks of river. Wears bed and banks further
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| What is attrition? | load itself broken down further as particles bounce off each other and become smooth and rounded
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| What is solution? | water dissolves some of the minerals
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| What is traction? | large pebbles and stones rolled along river bed by force of moving water
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| What is saltation? | small pebbles bounced along river bed
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| What is suspension? | small particles held up in water - movement of river is fast enough for them not to drop to bed
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| What is solution? | rocks dissolved in water by weak acids
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Created by:
katelynodoherty
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