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Hydrology NOTES page 8 Erosion ©Mark Place, 2007-2008
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the movement of weathered material
EROSION the movement of weathered material
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the movement of weathered material
EROSION the movement of weathered material
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Greatest FORCE Greatest AGENT gravity water
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carving out V-shaped valleys?
What agent of erosion is responsible for carving out V-shaped valleys? r i V e r s Figure A steep mountain stream eroded a V-shaped valley into soft shale in the Canadian Rockies. running water
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carving out U-shaped valleys?
What agent of erosion is responsible for carving out U-shaped valleys? glaciers
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Slope
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Erosion rate versus slope
Olympic Mountains
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Discharge the amount of water
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Rate of Erosion Stream Discharge
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Meandering Streams
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Where is erosion greatest? Outside of Curve - Cut Bank
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Where does the river flow fastest? A-A' = Center just below the
surface B-B' and C-C' = outside of curve
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Oxbow Lakes New Mexico DEMO
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What page can this graph
be found in the ESRTS? Page 6
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What’s the minimum speed water needs to be moving in order
to transport sand? 0.4 cm/sec
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In order to move a particle that is 7.0 cm, a stream’s velocity
would need to be at least _______ cm/sec. 200 cm/sec
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Wind Erosion desert wind erosion pitted
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How sand dunes form
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