S3 River Features 2 Waterfall

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Describes the formation of waterfall

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S3 River Features 2 Waterfall

  1. 1. River Features: (ii) Waterfall
  2. 2. Waterfall can be formed in 2 ways: 1. Different rock resistance 2. Faulting Watch the following video to understand how waterfalls are formed.
  3. 3. 1. Formed by Differential Rock Resistance
  4. 4. • River flows over a band of more resistant and less resistant rock.
  5. 5. • River flows over a band of more resistant and less resistant rock. • The less resistant rock erodes faster than the resistant rock
  6. 6. • River flows over a band of more resistant and less resistant rock. • The less resistant rock erodes faster than the resistant rock • Causing a change in the gradient of the river.
  7. 7. • River flows over a band of more resistant and less resistant rock. • The less resistant rock erodes faster than the resistant rock • Causing a change in the gradient of the river. • Over time, after repeated pounding, the river bed becomes steeper causing water to flow down vertically and rapidly.
  8. 8. 2. Formed by Faulting
  9. 9. • Faulting causes thebeing lifted up relative to with one blocked land to be displaced, the adjacent block.
  10. 10. • Faulting causes thebeing lifted up relative to with one blocked land to be displaced, the adjacent block. • The height vertically will cause the river to flow down difference
  11. 11. • Faulting causes thebeing lifted up relative to with one blocked land to be displaced, the adjacent block. • The height vertically will cause the river to flow down difference • Pounding the river bed and a plunge pool is formed.

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