geography 0.0 / 5 ? GeographyCoastal zonesGCSEAQA Created by: lils2016Created on: 19-03-16 15:35 rock armour/rip rap large resistant rocks dumped on the beach to break the waves protecting the land and buildings behind it 1 of 30 backwash movement of water down the beach 2 of 30 swash movement of waves up the beach 3 of 30 managed retreat process of leaving land to naturally erode away in the sea 4 of 30 groyne wooden or concrete barrier across a beach at an angle trapping sediment 5 of 30 gabions wire cages holding rocks that can be built up to create walls 6 of 30 hard engineering man-made structures that interfere with coastal processes 7 of 30 soft engineering natural materials used to interfere with coastal processes 8 of 30 weathering chemical, physical and chemical breakdown of rocks in situ 9 of 30 erosion wearing away and breaking down of coastlines by the sea 10 of 30 beach an accumulation of sand and shingle 11 of 30 headland land that juts into the sea 12 of 30 revetments planks which act as breakwaters but allows sand to be carried through 13 of 30 sea wall wall built in front of the coast for protection 14 of 30 prevailing winds wind blowing from one direction 15 of 30 beach nourishment addition of extra sediment to rebuild a beach 16 of 30 beach re-profiling act of changing the shape of a beach 17 of 30 offshore breakwater barrier built offshore in which the waves break on 18 of 30 wave refraction sides of headlands are eroded by waves that refract aroud it 19 of 30 bar where a spit grows across a bay 20 of 30 hydraulic action sheer force of the wave hitting the cliff causes parts of it to wear away 21 of 30 solution corrosive sea water dissolves chalk and limestone making it easily erodable 22 of 30 abrasion wearing away of cliffs by sediment flung by breaking waves 23 of 30 attrition rocks and boulders in the sea collide with eachother and break into smaller rounder pieces 24 of 30 biological weathering breakdown of rock through the action of plants and animals 25 of 30 bay less resistant rock that gets eroded by waves and found between headlands 26 of 30 chemical weathering takes place when there is a chemical change in certain rocks 27 of 30 mechanical weathering disidisintergration of rock without any chemical changes taking place 28 of 30 tetrapods man made four legged concrete shapes dumped along the coast to protect it 29 of 30 beach recycling material is moved back to its original position from where it accumulated to 30 of 30
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