19 terms

ch 14 vocab

A science that draws on the methods and knowledge of geology, chemistry, physics, and biology to study all aspects of the ocean
The measurement of ocean depths and the charting of the shape or topography of the ocean floor.
A device that determines the distance of an object under water by recording echoes of sound waves.stands for sound navigation and range
a small underwater craft used for deep-sea research
continental margin
a boundary between a continent and adjacent ocean basin floor
continental shelf
A gently sloping, shallow area of the ocean floor that extends outward from the edge of a continent
continental slope
A steep incline leading down from the edge of the continental shelf
submarine canyons
deep, steep-sided valleys cut into the continental slope
turbidity currents
dense current that carries large amounts of sediment down the continental crust
continental rise
Found in regions where trenches are absent. Where the continental slope merges into a more gradual incline. Has turbidity currents that follow submarine canyons deposit sediment that forms deep-sea fans.
ocean basin floor
area of the deep-ocean floor between the continental margin and the oceanic ridge
abyssal plains
Are deep and incredibly flat features in fact these regions are likely the most level places on Earth.
An underwater volcanic peak rising from the ocean floor and having a peaked or flat-topped summit below the surface of the sea.
mid-ocean ridge
An underwater mountain chain where new ocean floor is formed
seafloor spreading
The process that creates new sea floor as plates move away from each other at the mid-ocean ridges
terrigenous sediments
land; mineral grades eroded from continental rock and transported to the ocean
biogenous sediments
seafloor sediment of biological origin, such as sea shells and skeletons of marine life
calcareous ooze
Ooze composed mostly of the hard remains of organisms containing calcium carbonate.
siliceous ooze
biogenous sediment composed of the silica based shells of single-celled animals and algae