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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 |