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19 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is coast? |
Coast is the transition zone between land and the sea. The coast is the actual frontier between the two It consists on onshore and offshore |
Define and ask yourself the parts of it.. |
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Waves |
Waves do much of the work of the marine process. They erode, transport and deposit materials Waves are created by winds The friction between winds and water set waves in motion The strength of the wave depends on the strength of the wind It also depends on the fetch |
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The power of wave depends on? |
1.strength of the wind 2.fetch |
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Fetch? |
The uninterrupted distance over which wind can blow |
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Swash? |
When wave breaks and water travels up the coast. The transport materials Strong in constructive waves Create depositional lands |
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Backswash |
When water runs back to the water body down the beach at 90 degrees Destructive waves Erosional landforms |
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LSD? |
Longshore drift is the movement of sediments along the coast by wave action |
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What is continental shelf |
Continental shelf is the area of seabed around a large land where sea depth is relatively shallow. It is also called insular shelf |
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Difference between constructive and Destructive waves |
👆 Rotate and see... |
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Abrasion |
This is caused by waves picking up stones and hurling them at cliffs.. Wearing them away |
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Corrosion |
The dissolving of rocks by sea water.. When slightly acidic or basic |
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Attrition |
Is a process whereby the material carried away by waves becomes rounded and smaller over time as it collides with the other material |
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3 main land processes |
1.weathering-freezethaw,onionskin,biological weathering 2.erosion-hydraulic action, abrasion, attrition, corrosion 2.massmovement-soilcreep, landslide, rock fall, slumping |
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Factors affecting coast |
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Erosional landforms |
1.HeadlandBay 2.cavearchstackstump 3.wavecut platforms |
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Depositional landforms |
1.beach 2.berms 3.splits 4.bar 5.tombolo 6.cuspate forelands 7.sand dunes |
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Factors affecting coastlines |
1.geology 2.vegetation 3.sea level changes 4.human activities |
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The 4 coastal systems |
1.coral reefs 2.Mangrooves 3.salt marshes 4.sand dunes |
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Coastal conflicts |
1.Development vs conservation 2.The coast system 2.between coastal users |
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