Sec 1 NA - River system & drainage

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Transcript

  • 1. The River System
  • 2. Recap
  • 3.  
  • 4.  
  • 5.  
  • 6.  
  • 7.  
  • 8.  
  • 9. Course of a River
  • 10.  
  • 11. The Drainage Basin The area drained by a river and its tributaries River River source Tributary River mouth Drainage basin Watershed
  • 12. Drainage Basin
  • 13.  
  • 14. River source
    • Where do you think the water in the river comes from?
  • 15. Main River
  • 16. Confluence The point where the tributary join the main river.
  • 17. Watershed & Drainage basin
  • 18. Watershed & Drainage basin
  • 19.  
  • 20. Waterfall
  • 21. Waterfall
  • 22.  
  • 23.  
  • 24.  
  • 25. How waterfall is formed?
    • A waterfall usually forms when a river flows over hard and soft rocks.
    • The soft rock is eroded more quickly.
    • A ledge is formed over which water falls.
    • The force of the water is so great that it cuts a depression or plunge pool at the bottom.
  • 26. Meander & oxbow lake
  • 27.  
  • 28.  
  • 29.  
  • 30.  
  • 31. Features formed by rivers
  • 32.  
  • 33. River mouth & Delta
  • 34. The sediments will be deposit at the river mouth which form a form a delta overtime.
  • 35. River mouth Delta Distributaries
  • 36.  
  • 37. A B C D E F G