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BarnetOceanography 2
Barnett Oceanography 2
Question | Answer |
---|---|
bathymetry | scientists measure ocean depths and chart the topography of the ocean floor |
submersible | small underwater craft used for deep sea research - carries thermometers, pressure gauges, etc. |
Mariana Trench | 11,022 meters deep; deepest place on earth |
seamount | submerged volcanic peak |
guyot | once-active, now submerged, flat-topped volcanic peak |
terrigenous | type of ocean sediment made of mineral grains eroded from continental rocks and transported to the ocean |
biogenous | type of ocean sediment made from shells and skeletons of marine animals and algae |
hydrogenous | type of ocean sediment made of minerals that crystallize directly from ocean water through chemical reactions |
sonar | sound navagation and ranging |
plankton | algae, animals, and baceteria that drift with ocean currents |
nekton | organisms that are capable of moving independent of ocean currents |
benthos | organisms that live on or in the ocean bottom |
photic zone | upper layer of ocean which sunlight penetrates |
hydrothermal vent | place on the ocean floor where water is heated by energy from Earth's interior; supports unique life forms |