Rivers<br />
Stream Erosion<br />Load - the stuff water carries, like sticks, sand, rocks, leaves, dead fish<br />Channel - The path a ...
Load<br />	Bed load - large materials that bounce along the bottom of a stream<br />	Suspended load - small rocks and soil...
Stages of a river - determined by climate, gradient, load<br />Youthful rivers - <br />	deeper than wide<br />	fast flowin...
See changes in meanders over time<br />Old rivers<br />	little erosion<br />	deposits sediment<br />	wide and flat<br />	m...
Deposition - The process in which material is dropped<br />Alluvium - Rock and soil deposited by streams<br />Meander anim...
Formation of an oxbow lake --><br />
Delta - fan shaped deposit where a load is dropped<br />
Alluvial Fan - formed where a fast moving mountain stream hits a plain.<br />
Flood Plain - area along a stream's banks where water goes during a flood<br />Levee - area of land that stops water in a ...
Mouth - the end of a river<br />Delta - the deposition at the end of a river made when the load is dropped.<br />Source - ...
Rivers
Rivers
Rivers
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Rivers

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Introduction to rivers

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Rivers

  1. 1. Rivers<br />
  2. 2. Stream Erosion<br />Load - the stuff water carries, like sticks, sand, rocks, leaves, dead fish<br />Channel - The path a river takes<br />Why do some streams flow faster than others?<br /> 1. Gradient - the change in elevation over a distance.<br /> High Gradient<br /> Low Gradient<br /> 2. Discharge - the amount of water in a stream<br /> greater discharge means more erosion, more speed, more load<br />
  3. 3. Load<br /> Bed load - large materials that bounce along the bottom of a stream<br /> Suspended load - small rocks and soil carried by the water - fast water carries heavier loads<br /> Dissolved load - chemicals carried by the water <br />click here for a video<br />sampling bed load<br />
  4. 4. Stages of a river - determined by climate, gradient, load<br />Youthful rivers - <br /> deeper than wide<br /> fast flowing<br /> steep gradient<br /> rapids and waterfalls<br /> few tributaries(streams that flow into it)<br />Mature rivers<br /> wider than deep<br /> not as steep<br /> few rapids<br /> many tributaries<br />
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  6. 6. See changes in meanders over time<br />Old rivers<br /> little erosion<br /> deposits sediment<br /> wide and flat<br /> meanders (lots of curves)<br /> fewer tributaries than a mature river<br />Rejuvenated river<br /> land around a river <br /> is pushed up and the <br /> river cuts deeper into <br /> the ground<br />
  7. 7. Deposition - The process in which material is dropped<br />Alluvium - Rock and soil deposited by streams<br />Meander animation --><br />
  8. 8.
  9. 9. Formation of an oxbow lake --><br />
  10. 10. Delta - fan shaped deposit where a load is dropped<br />
  11. 11. Alluvial Fan - formed where a fast moving mountain stream hits a plain.<br />
  12. 12. Flood Plain - area along a stream's banks where water goes during a flood<br />Levee - area of land that stops water in a flood<br />
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  18. 18. Mouth - the end of a river<br />Delta - the deposition at the end of a river made when the load is dropped.<br />Source - the beginning of a river<br />Erosion - the wearing away of the land by the water<br />

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