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Cards In This Set
| Front | Back |
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Name 5 types of coastal environment
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Industrial
Tourism Residential Coastal landforms Biodiverse |
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What forms waves and affects their strength?
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The wind speed & strength
The wind duration The fetch |
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Name characterisitcs of a high energy coastline with more erosion.
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Big waves
, steep cliffs |
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Name characteristics of a low energy coastline with more deposition
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Small gentle waves
Gentle sloping beaches |
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Define: constructive waves
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Waves that have a stonger swash than backwash. They are infrequent (6-9/min) and are long in relation to their height.
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Define: destructive waves
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Waves that have a stronger backwash than swash. The are frequent (12-18/min) and are tall in relation to their height.
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Describe wave refraction
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1. Waves approach shore parallel to coastline
2. Some parts of the wave hit shallow water and slow 3. the rest of the wave continues at the same speed so the wave refracts (curves) around the headland |
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What happens when a wave approaches the shore?
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Friction slows down base of wave. the circular orbits of water are disrupted, the wave rises up and then breaks
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Define: stores
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When energy drops and the sediment temporarily stays in one place e.g. beach, offshore bar
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Define what an input to a coastal zone is and give an example
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How energy & sediment come into the coastal zone. eg wave energy, mass movement, weathering
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Define what an output of a coastal zone is and give an example.
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How energy & sediment leave the coastal zone. eg. water, sediment taken away from coast
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Define: flows
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How energy & sediment is transported in a coastal zone
e.g. waves |
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Define: erosion (marine processes)
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The wearing away of the land by material carried by waves
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Define: hydraulic action
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The sheer force of the water breaks off bits off rock and forces air into cracks
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Define: corrosion
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Erosion caused by acids in the water dissolving rocks
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