Flashcards
Coastal Landcapes
Cards in this deck (25)
- 1What are the features of a destructive wave?Weak swash, Strong backwash, Steep beach
- 2What are the features of a constructive wave?strong swash, weak backwash, gentle slope
- 3What are the three types of weathering?Physical ( freeze thaw), Biological, Chemical
- 4Define Hydraulic ActionThe compression of air in cracks that puts pressure on the rock and causes pieces of rock to break off.
- 5Define Corrasionsand and pebbles carried in waves are thrown against the cliff face
- 6Define Corrosionchemicals in sea water dissolve certain rock types, such as chalk
- 7Define AttritionThe breaking up off rocks and pebbles in the waves due to the movement of the waves
- 8What is soil creep?The gravity pulls the water in the soil downhill, soil particles move with the water; heavy rainfall causes faster downhill movement. The soil appears to have ripples called terracettes
- 9what is slumping?A large area of land moving down a slope. Dry weather makes the clay contract, when it rains. water gets into the cracks and the soil becomes saturated.
- 10What is it called when the sediment is moved along the shore by the waves in the direction of the prevailing wind?Longshore Drift
- 11What are spits?Narrow stretches of sand and pebbles that are joined to the land at one end.
- 12What is a bar?spits which go across a bay
- 13What is an example of forecasting?The Met office predicts the likely hood of a flood.
The Environment Agency monitors sea conditions 24/7 - 14What is an example of building design?In Bangladesh all one-story and two-storey buildings must have an external staircase to the roof.
- 15what is an example of planning?The Thames Flood Barrier was completed in 1982. In, 2010, the Environment Agency installed new flood walls along the river.
- 16What is an example of Education?The government gives advice to the public via its website.
- 17Revetments are...?...Slatted wooden structures built at the base of the cliff
- 18Rip Rap is...?...large rocks placed in front of the cliff
- 19Recurved seawalls are ...?...walls usually made of concrete; modern ones have a recurved face
- 20Groynes are......usually made of wood; stretch from the coastline into the sea
- 21Gabions are......wire cages filled with stone used to reduce erosion
- 22Offshore reefs are......enormous concrete blocks and natural boulders are sunk offshore to alter wave direction and to dissipate the wave energy of tides and waves.
- 23Beach replenishment is......the placing of sand and pebbles on a beach
- 24Cliff regrading is...The cliff is cut back and given a new gentle slope to stop it slumping.
- 25Managed Retreat is......allowing the sea to gradually flood land or erode cliffs
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- Flashcards on Coastal Landcapes, created by Nikki Hopgood on 02/06/2017.
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- Nikki Hopgood
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