Coasts Key Terms 0.0 / 5 ? GeographyCoastal environmentsASOCR Created by: jositaylorCreated on: 06-05-18 14:38 Landscape The visible features (landforms) of an area of the Earth's surface. 1 of 44 System A group of objects and the relationships between them. 2 of 44 Geomorphic Relating to the formation and shaping of landforms and landscapes by natural processes. 3 of 44 Nearshore Zone The area of coastal environment between mean high tide and mean low tide. 4 of 44 Open System A type of system whose boundaries are open to both inputs and outputs of energy and matter. 5 of 44 Input An addition of energy and/or materials to a system. 6 of 44 Output The transfer of energy and/or materials out of a system. 7 of 44 Longshore Drift The movement of sediment by waves and currents along a coastline. 8 of 44 Equilibrium A long-term balance between the inputs and outputs of a system. 9 of 44 Dynamic Equilibrium A system displaying unrepeated average states through time. 10 of 44 Negative Feedback An automatic response to change in a system that restores equilibrium. 11 of 44 Sediment Cell A stretch of coastline and its associated near shore area within which the movement of coarse sediment, sand and shingle is largely contained. 12 of 44 Closed System A system with inputs and outputs of energy, but without any movement of materials across system boundaries. 13 of 44 Fetch The distance of open water in one direction from a coastline, over which wind can blow. 14 of 44 Wave Period The time interval between successive wave crests arriving at a given point. 15 of 44 Swell Wave A relatively smooth ocean wave that travels some distance from the area of its generation. 16 of 44 Storm Wave A wave generated locally by high wind energy. 17 of 44 Swash The movement of water up the beach after a wave has broken. 18 of 44 Backwash Flow of water down a beach after the wave has broken. 19 of 44 Tidal Range The vertical difference in height between consecutive high and low waters over a tide cycle. 20 of 44 Lithology The chemical and physical properties of rocks types. 21 of 44 Structure The physical characteristics of rocks including jointing, bedding, faulting. 22 of 44 Concordant A coastline with bands of different geologies lying parallel to the shore. 23 of 44 Discordant A coastline with bands of different geologies lying perpendicular to the shore. 24 of 44 Rip Currents Strong and relatively narrows currents of water that flow seaward against breaking waves. 25 of 44 Cusps A pointed and regular arc pattern of sediment on the beach. 26 of 44 Ocean Currents The large scale horizontal flow of ocean water driven by planetary winds and contrasts in water temperature and salinity. 27 of 44 Sub-Aerial Processes A collective term for weathering and mass movement processes. 28 of 44 Sediment Budget The balance of sediment volume entering and exiting a particular section of the coast. 29 of 44 Regolith A loose layer of rock material overlying bedrock. 30 of 44 Settling Velocity The speed required for suspended particles of a given size, transported by rivers, the wind and tidal currents, to be deposited. 31 of 44 Flocculation A process by which salt causes the aggregation of minute clay particles into larger particles that are too heavy to remain suspended in water. 32 of 44 Deflation Erosion of clay and silt-sized particles by wind action on dry land. 33 of 44 Strata The layers or beds found in sedimentary rock. 34 of 44 Wave Refraction The reintoriation of wave fronts as they enter shallower water so that they approach parallel to the shoreline. 35 of 44 Orthogonals Imaginary lines, perpendicular to wave fronts, representing the transfer of energy as a wave moves towards the coast. 36 of 44 Turbid Cloudy or muddy conditions owing to sediments held in suspension. 37 of 44 Saltpans Flat areas of ground covered in salt deposited by the evaporation of saline water. 38 of 44 Flocs A mass formed in fluid by the aggregation of suspended particles. 39 of 44 Distributaries Small branching stream channels that flow away from the man stream or river. 40 of 44 Levees Ridges of coarse deposits found alongside stream channels and elevated above the flood plain. 41 of 44 Crevasse Splays Low lying areas of deposited sediment between levees. 42 of 44 Eustatic Worldwide change in sea level. 43 of 44 Beach Recharge The addition of sediment to a beach by humans to increase its size or volume. 44 of 44
AS Geography Edexcel- Unit 2 (Crowded Coasts) Revision Notes with case studies 5.0 / 5 based on 1 rating Teacher recommended
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