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Geo: rivers
| Question | Answer |
|---|---|
| River | A large body of fresh water moving across a defined path |
| Bank | The natural borders of a river that keeps it confined |
| Describe a youthful river | Low amount of water, steep bank and doesn’t deposit a lot of material |
| Describe a matured river | Deposits more material, banks are less steep and has a wider bed |
| Describe an old river | Undefined banks, wide bed and more deposition |
| Bed | The bottom of a river |
| Meander | A bending in a river formed through deposition |
| What are interlocking spurs and give examples | Interlocking spurs are features of a river formed by tight bending through hard rocks, creating a zig zag course. Examples of these are river Lee, Liffey and Slaney |
| Source | Where a river begins |
| Tributary | Where smaller streams merge |
| Course | The general path of a river |
| Mouth | Where a river escapes into the ocean |
| Confluence | The point where two rivers meet |
| Unfinished | Unfinished |
| How does a waterfall form | When a bed of hard rock lies on a bed of soft rock, a river flows and falls of it, the soft rock erodes quicker, creating under cutting and a plunge pool where water falls in. Overtime the overhang collapses and the process repeats over a thousand years. |
| How does an oxbow lake form | Erosion takes place on the outer bank of a river, the neck gets narrower and eventually erodes together. The river takes the quicker course , depositing mate to seal off the lake ,forming a U shaped lake. |
| How does a levee form | The river floods and spreads over the floodplain, depositing material. The coarser material lies closer to the banks while finer material spreads out, forming a noticeable taller bank that dips down. |
Created by:
O15iny
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