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earth's main oceans Indian, Pacific, Southern, Arctic, Atlantic
2 sources of water asteroids, vapor from volcanoes
salinity Measure of mass of dissolved solids in a mass of water.
brackish water salt water and fresh water mixed in, usually a 1 to 17 ppt salinity
sea water water from sea, salt water with a ppt of 35
four criteria scientists use for classifying ocean zones amount of sunlight, salinity, density, temperature
surface zone shallow water that gets the greatest amount of sunlight, most plant and sea life lives here.
middle zone , only a faint blue green light reaches this zone.
adhesion when 2 unlike particles are attracted to each other due to the polarity
cohesion when 2 or more particles are the same substance and are attracted to each other.
ocean currents a large volume of water flowing in a certan direction.
gyre a circular system of currents
5 major gyres south Atlantic north Atlantic South Pacific north Pacific and Indian ocean gyre.
continental shelf The continental shelf is an underwater landmass which extends from a continent, resulting in an area of relatively shallow water
continental margin The continental margin is the zone of the ocean floor that separates the thin oceanic crust from thick continental crust. Together, the continental shelf, continental slope, and continental rise are called continental margin
trench A trench is a type of excavation or depression in the ground that is generally deeper than it is wide
mid ocean ridge A mid-ocean ridge is 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
density currents vertical currents that move water downwards.
upwellings surface water being pushed down by cooler water to bring nutrient rich water to the surface.
continental rise the area where land rises to the shore
abyssal plains large flat area on the ocean floor that extends across basins.
resources from sea floor oil, natural gas, methane hydrates,zinc, gold maganese
4 criteria scientists use for classifying ocean zones amount of sunlight, salinity, density,temperature.
Created by: greenleaf