Earth Science Ocean Floor 23.2
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Created by:
lsxinh on July 21, 2012
Subjects:
GIS_lsx, Mapping_lsx, surveying_lsx, earth_science_lsx
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Set copied from elishacohen
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9 terms
Terms | Definitions |
|---|---|
 SONAR | sound navigation and ranging - system that uses acoustic signals and returned echos to determine the lication of objects or to communicate |
| continental margins | shallow parts of the ocean floor that are made of continental crust and a thick wedge of sediment. it is located between the shoreline and the deep-ocean bottom |
| continental shelf | part of the continent that is covered by water; relatively flat |
| deep ocean basin | made of oceaninc crust and a thin layer of sediment |
| continental slope | the seaward edge of the continental shelf that steeply drops towards the ocean floor |
| trenches | long, narrow and steep depression that forms as a result of subduction |
| abyssal plain | large, flat, almost level area of the deep-ocean basin |
| mid-ocean ridge | underwater mountain ranges that run along the floor of the oceans |
| seamounts | submerged volcanic mountains taller than 1 km |
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