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26 Cards in this Set
- Front
- Back
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continental shelf |
relatively fat area of seabed, stretching from the land to the edge of the continental slope |
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continental slope |
the steeply sloping area of the seabed that stretches from the continental shelf to the abyssal plain |
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submarine canyons |
any of a class of narrow steep-sided valleys that cut into continental slopes and continental rises of the oceans. |
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abyssal plain |
a large area of extremely flat or gently sloping ocean floor just offshorefrom a continent |
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Seamounts |
extinct volcanic cones that lie below the surface |
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guyot |
a flat-topped volcano that reached the surface but later subsided |
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mid ocean ridges |
A boundary where two oceanic plates are moving away |
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rift valley |
long, steep valley formed when two parallel rifts form in the Earth's crust and the land between them sinks |
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Transform vaults |
fracture zones usually at right angles to the main ridges, caused by the plates moving apart |
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Ocean trenches |
are-shaped depressions, formed at subduction zones |
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oceaninc conveyor belt |
a global thermohaline circulation, driven by the formation and sinking of deep water and responsible for the large flow of upper ocean water |
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predatory fish |
fish that eat other fish |
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overfishing |
the process of fishing to such an extend that fish species are driven to extinction |
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fish stocks |
the amount of fish of a species |
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exclusive economic zone |
the coastal water and sea bed around a country's shores, to which itclaims exclusive rights for fishing, oil exploration, fishing, etc |
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abrasion |
weathering away of the shoreline by material carried by the waves |
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hydraulic impact/quarrying |
the force of water and air on rocks |
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solution |
wearing away of base-rich rocks by acidic water |
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attrition |
the rounding and reduction of particles carried by waves |
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salt weathering |
the process by which sodium and magnesium compounds expand in joints and cracks thereby weakening rock structures |
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freeze.than weathering |
the process whereby water freezes expands and degrades jointed rocks |
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water-layer weathering |
tidal cycle of wetting and drying |
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biological weathering |
carried out by molluses, sponges and urchins and is important in low-energy coasts |
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coral |
the limestone skeleton skeleton secreated by certain marine polyps often deposited in extensive masses to form a reef |
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coral reef |
a ridge in a relatively, shallow, tropical sea, consisting of colonies of coral and other organic matter |
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mangrove |
tropical evergreen tree or shrub with interwined roots and stems which grows in dense groves in swamps or along tidal coasts |
