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30 Cards in this Set
- Front
- Back
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What are the 2 types of waves? |
1. Destructive waves ( powerful and cause erosion) 2. constructive waves(less powerful and cause erosion) |
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The energy of a wave depends on? |
1. |
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Destructive waves factors |
occur in stormy conditions have high energy short wavelength travelled a long distance (large fetch) have a strong backwash than swash that causes erosion |
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Constructive wave factors |
happen in calm conditions have lower energy transport material by longshore drift cause deposition have a greater swash than backwash |
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constructive wave |
ok |
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destructive wave |
ok |
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swash |
when the wave breaks and the water travels up the beach pushes segments up the beach away from the sea |
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Backwash |
The process of the wave going out
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Weathering happens by ...... |
salt crystal growth Acid Biological warming Erosion Mass movement |
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Weather Erosion process |
Abrasion/ corossion/ hydraulic action/Attrition |
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Hydraulic action |
water hits the cliff forcing air into cracks in the cliff face |
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corrosion |
the dissolving of rocks and minerals by sea water |
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Attrition |
material carried by the waves become rounder and smaller as it hits other particles all the sharp edges get knocked off in the process |
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Abrasion |
waves picking up rocks hitting the cliff wearing the cliff away |
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Mass Movement |
1.Rock fall 2. Slumping Eroded |
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Rock fall |
thesudden form of mass movement, Fragments of rock break from the cliff face dueto weathering and fall to the base of the cliff.
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Slumping Eroded |
Thebase of the cliff is eroded by the waves and the top is saturated by rain. Thismakes the slope steeper and the cliff starts to slide downwards because of thesaturation of the rain, Therain also makes the rock heavier.
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Biological Warming |
Rootsgrow in cracks in the rocks, forcing air into the cracks in cliff face
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Acid |
Rainfalls on the rocks and the acid in the rain can react with minerals causingthem to dissolve and the rock decays.
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Salt crystal Growth |
Spray from waves land onthe rocks leaving salt behind, Salt crystals grow and create stresses in therock and the rock breaks into small fragments.
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Landforms created by erosion |
· Headland · Bay· Wave cut platform · Cave. Arch· Stack . Stump
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Headland |
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Bay |
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Wave cut platform |
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Cave |
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Arch |
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Stack |
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Stump |
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Explain the formation of head lands and bays |
1. |
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The process of longshore drift and its impact on the coastline? |
1. the process by which beach material is transported along the coastline 2. the direction of the longshore drift reflects the direction of the wind 3. it as a zigzag motion 4. beach material is pushed up and along the beach by the swash 5. material is pulled straight down the beach by the backwash |
