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COURSE LECTURE NOTES:

| SCIENCE | MATTER | SOLAR SYSTEM | PLANETS | ATMOSPHERE | WIND and TEMPERATURE | HUMIDITY | WEATHERING | SOIL | SEASONS | MASS WASTING | SEASONS and CLIMATE | WIND WORK | STREAMS | LAND FORMS | GROUND WATER | CAVES/KARST | THE OCEAN | TIDES & ESTUARIES | WAVES | GLACIERS | GLACIAL LANDFORMS | VOLCANOES | VOLCANOES | CHON | PLATE TECHTONICS | EARTHQUAKES | ROCKS | CLIMATE CHANGE |

STREAMS

Stream - any sized channelized flow of water or the channel it flows in.

Things that control stream velocity

    1. stream gradient - slope, the steeper the gradient the faster the stream velocity

    2. wetted perimeter - amount of channel the stream touches, the less the faster faster the stream velocity

    3. smoothness - less friction, the smoother the channel the faster the stream velocity

    4. discharge - the amount of water flowing, the more discharge the faster the stream velocity. Discharge equals the choss section of the stream at a point times the stream velocity (in the U.S, A. usually expressed in cubic feet)

Stream work

Stream work is trying to make the Earth flat. As plate techtonics causes the land to rise, streams tend to cut it down.

Steps in stream work (close to identical to work done by wind)

    1. erosion- breaking and lifting - takes the most work
    2. transportation

    3. deposition- heavest stuff falls out first as stream slows


LAND FORMS CREATED BY STREAM ACTION

    1. Erosional



    2. Depositional



    3. Both Erosional and Depositional


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