Oceanography
Oceanography
pacific - Is the larges of the ocean divisions.
Atlantic - worlds second largest ocean.
arctic - located at the northernmost part of the Earth.
Indian oceans - Is the third largest of the world's oceans.covering 20% of the worlds water on Earth.
bathymetry - is the study of underwater depth of lake or ocean floors.
sonar - sound navigation and ranging usually underwater, as in submarine navigation.
satellites - is an artificial object which has been intentionally placed into orbit.
Ocean Features
continental shelf - is the extended perimeter of each continent and associated coastal plain.
Abyssal plain - is an underwater plain on the deep ocean floor, usually found at depths between 3000 and 6000 m.
trenches - are hemispheric-scale long but narrow topographic depressions of the sea floor.
Guyots - also known as a tablemount, is an isolated underwater volcanic mountain (seamount), with a flat top over 200 metres (660 feet) below the surface of the sea.
seamounts - is a mountain rising from the ocean seafloor that does not reach to the water's surface (sea level), and thus is not an island.
mid-ocean ridge - is a general term for an underwater mountain system that consists of various mountain ranges (chains), typically having a valley known as a rift running along its spine, formed by plate tectonics.
- type of plate found at mid ocean ridge? -
resources in ocean
- oil, natural gas, gas hydrates, sand and gravel, manganese nodules, salts all used for energy/ foods!
ocean water
- salinity sailityness in the water. - History of salt There have been two main sources for salt: sea water and rock salt. Rock salt occurs in vast beds of sedimentary evaporite minerals that result from the drying up of enclosed lakes, playas, and seas. Salt beds may be up to 350 m thick and underlie broad areas. -