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Rivers
Rivers
Rivers
Rivers
Rivers
Rivers
Rivers
Rivers
Rivers
Rivers
Rivers
Rivers
Rivers
Rivers
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Rivers

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Visual notes on How rivers are formed

Visual notes on How rivers are formed

Published in: Sports, Technology
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  • 1. Rivers The beginning of a river is called its source. All rivers have tributaries streams that join the main river River system drains an area called a drainage basin The area between two drainage basins is called a watershed Part of a river that is tidal is called an estuary Mouth of a river is where it meets the sea or a lake C Parker
  • 2. Rivers stages C Parker
  • 3. Upper / youthful stage C Parker
  • 4. upper Vertical erosion Interlocking spurs Waterfalls V-shaped valleys C Parker
  • 5. Middle ( mature stage) C Parker
  • 6. Middle stage Lateral erosion erodes its banks Meanders Widening valley Flood plain C Parker
  • 7. Lower (old stage) C Parker
  • 8. Lower C Parker
  • 9. Lower stage Deposition Flood plain Ox-bow lakes Delta C Parker
  • 10. Deposition C Parker
  • 11. Floodplain C Parker
  • 12. Ox-Bow lake C Parker
  • 13. Delta C Parker
  • 14. River processes Speed and energy of water erodes = hydraulic action. Fragments of rock carried by river called the load wear away the banks and river bed = abrasion. Crashing of stones and pebbles carried by the river wears itself away = attrition. Limestone chalk dissolved by carbonic acid = solution C Parker

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