erosion erosion = the transport of sediments from weathering. *gravity and water are biggest...
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ErosionErosion = the transport of sediments from
weathering.
*Gravity and Water are biggest factors*
1. Streams2. Glaciers3. Landslides4. Waves
Streams
Running water carries sediment downstream
Scours bedrock
Carves V-shaped gorges.
Stream Erosion
Vocabulary
Suspended Load = particles suspended in stream.
Bed Load = particles rolling on bottom (abrasion polishes rocks).
Discharge = amount of water flowing past a given point.
Sheet Erosion = flows in sheet over flat land.
Rill and Gully
Stream Evolution
1. Youth = head, high elevation, steep slope, rapid erosion, V-shaped valley
2. Middle Age = Small streams merge to form tributaries, gentler slopes, stream begins to meander.
Old Age
Gentler slope, meander widens, reaches mouth.
Mouth = where stream meets ocean or lake.
Sediment deposits form delta or alluvial fan.
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