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.

Sorting