S3 River Features 2 Waterfall
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S3 River Features 2 Waterfall

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Describes the formation of waterfall

Describes the formation of waterfall

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S3 River Features 2 Waterfall S3 River Features 2 Waterfall Presentation Transcript

  • River Features: (ii) Waterfall
  • Waterfall can be formed in 2 ways: 1. Different rock resistance 2. Faulting Watch the following video to understand how waterfalls are formed.
  • 1. Formed by Differential Rock Resistance
  • • River flows over a band of more resistant and less resistant rock.
  • • River flows over a band of more resistant and less resistant rock. • The less resistant rock erodes faster than the resistant rock
  • • 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.
  • • 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.
  • 2. Formed by Faulting
  • • Faulting causes thebeing lifted up relative to with one blocked land to be displaced, the adjacent block.
  • • 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
  • • 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.