S3 River Features 2 Waterfall
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Waterfalls can form in two ways: 1) Differential rock resistance where less resistant rock erodes faster than more resistant rock, changing the river's gradient and causing water to flow vertically; and 2) Faulting which displaces land vertically relative to adjacent blocks, causing the river to flow down the height difference and form a plunge pool.
S3 River Features 2 Waterfall
- 1. River Features: (ii) Waterfall
- 3. Waterfall can be formed in 2 ways: 1. Different rock resistance 2. Faulting Watch the following video to understand how waterfalls are formed.
- 4. 1. Formed by Differential Rock Resistance
- 6. • River flows over a band of more resistant and less resistant rock.
- 7. • River flows over a band of more resistant and less resistant rock. • The less resistant rock erodes faster than the resistant rock
- 8. • 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.
- 9. • 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.
- 10. 2. Formed by Faulting
- 12. • Faulting causes thebeing lifted up relative to with one blocked land to be displaced, the adjacent block.
- 13. • 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
- 14. • 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.