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ES-Sem1

TermDefinition
abyssal plains Long, flat stretches of the ocean floor.
accretionary wedge A build-up of sediment that is scraped off the oceanic crust as that crust subducts.
active margin Continental margin where subduction occurs.
Aleutian-type mountains Mountains that form when oceanic plates collide.Andean-type mountains
Andean-type mountains Mountains that form from oceanic crust colliding with continental crust.
arc-continent mountains Mountains that are formed by terrane accretion.
atolls Coral reefs that form around volcanic islands.
buoyancy The force that causes floating.
chemoautotroph An organism that makes food from chemical reactions.
continental margin Where a continent meets an ocean.
continental rise The gradual decline at the end of a passive margin.
continental shelf The submerged, relatively flat land at the edge of a shoreline where a continent meets the ocean crust.
continental slope The steep part of the continental margin.
coral reefs An underwater structure made of coral that supports marine life.
deform Alter the shape of something by stress.
fault-block mountain Mountains formed by normal faults (two plates under tension).
faulting When the crust breaks due to plate movement.
folding When rocks bend due to compression.
guyots Underwater volcanoes with flat tops.
isostasy The balance between buoyancy and gravity.
isostatic adjustment When the balance between buoyancy and weight changes.
mountain Any land that rises sharply compared to the land around it.
mountain belt Several parallel mountain ranges.
orogenesis The process of mountain formation.
passive margin Continental margin that has no subduction.
rift zones Where seafloor spreading happens.
seamounts Underwater mountains.
shelf break Where the shelf meets the slope.
sonar Sound waves that are used to determine the distance to an object.
submarine canyon A canyon cut out of the continental slope.
terrane A patch of land that differs in origin from its neighbors on the continent.
terrane accretion When a terrane is added to a continent due to plate movement.
topography The features and elevation of the land surface.
Created by: Bennett3
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