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what is ocean water its a mixture of gasesand solids dissolved in pure water
what does salinity mean It is the term used to describe the amount of salt in the ocean water
what are the most common gasses in ocean water nitrogen,carbon dioxide,oxygen
what are the three ocean zones intertidal, nerictic, and open-ocean zone
what are three major groups of ocean life plankton, nekton, and benthos
define intertidal zone this zone is from the hide tide line and the low tide line. it presents a hard life for its organisms due to its constant changes and they have to be able to live without water for lenghty periods of time
define neritic zone this zone starts at the low tide line and reaches out to the edge of the contetial shelf. It also extends to 200 meters in depth. A large rang of organisms live in this zone.this zone is also very favorable for life, a fairly even temperature, a nice, low
define open-ocean zone due to its depths the bottom of this zone is not penetrated by light, which means there are not plants.
why is deep see fishing unsucessful. Too expensive and requires big nd vigorus equipment to catch anything.
how much salt does a cubic foot of sea water contain about 2.2 lbs
one cubic foot of lake water contains? .01 lbs
sea water is about___times saltier than lake water 220
one source of salt in sea water dissolved rocks
one source of salt in sea water solid material
one source of salt in sea water gaseous material
one source of salt in sea water dissolved sedements
one source of salt in sea water mountains wearing down
what is the solution for sea water mineral salts and decayed biologic matter
two reasons oceans are saltier than rivers natural influences, result of evaporation
are seas saltier today then millions of years ago yes
percent of earth covered by ocean 71
how many chemical elements found in sea water 85 out of 90 chemicals are in the ocean
once sunken to the floor, do elements have an effect on the sea yes, when it sinks it can become a solid
mollusks extract calcium from sea to help build their shells
crustaceans use calcium salts to build their bodies
coral use limestone
diatoms require silica to form their shells
sponges and seaweed they use iodine
what removes salt from the sea nothing
california current cold
canary current cold
gulf stream warm
kurioshio current warm
east austrailia current warm
benguela current cold
brazil current warm
peru current cold
antartic circumpolar current cold
north hemisphere currents flow clockwise
south hemisphere currents flow counter clockwise
three basic movements of the ocean up down movements of waves, steady movement of ocean currents, the rise and fall of tides
four characteristics of a wave crest, trough, wave height , wave length
a swell is very big shallow waves
under toe is a wave that pulls you under
tsunami usually caused by earthqakes or volcanoes, a huge wave
whats a current basically a river in the ocean
what are surface waves caused by wind patterns
what are deep currents caused by water densecity difference
how far do surface currents range several hundre meters
what are tides they are the regular rise and fall of ocean water caused by the gravitaional attraction among the earth, moon, and sun
what is the description of the ocean floor called bathymetry
what is a shoreline where a continent meets the ocean bordering it
what is it called when the area under the edge of the continent meets the ocean floor continental margin
what does a continental margin consist of a contental shelf, slope, and rise
what is a contental shelf its the somewhat flat part with shallow water on top
what is found on the contental shelf oil and minerals, and gas
how deep is it after the contental shelf after the shelf it plunges steeply for 4 to 5 kilometers
what is it called at the plunge the contental shelf
what seperates the continental slope from the rest is called the continental rise
what is a continental rise made of large amounts of sedements
what is a turbidity current it is a flow of water that carries large amounts of sedements
what is a submarine canyon they are v shaped valeys that have been cut in rock.
what is a an abyssal plain large flat areas on the ocean floor
what is a seamount an underwater volcanic mountain
what is a guyot its a a flat toped seamount caused by wave errosion
what is a trenche they are the deepest part of the ocean floor. they are long narrow crevises.
where are mid ocean ridges a continuos belt that extends from the artic ocean down through the middle of the alantic ocean around africa into the indian, then to the pacific north to north america. in the alantic ocean it is called the mid-atlantic ridge. in the pacific its called
what are mid ocean ridges they are areas where molten material flows to the surface where it cools down to form a new crust.
what is a coral reef it is the limestone structures that contain the shells of animals
what are the three types of coral reefs frinning reefs, barrier reefs, and an atoll
what is a fringeing reef its a reef that is is still touching the shore of a volcanic island usually less than 30 meters wide
what are barrier reefs they are reefs that are seperated from the shore by an area of shallow water called a lagoon. barrier reefs are larger than fringing reefs and their islands have usually sunken in more.
what is an atoll an atoll is a ring of coral reefs, its found farther out in the ocean and has been worn away and sunk beneath the surface of the ocean.
what is ocean life mainly affected by the amount of penetrateing sunlight, the temperature of the water and the water pressure.
what is plankton it is an organism that floats near or at the surface of the ocean, they live in depths of 1 meter to 200 meters. many forms of plankton are microscopic.
what is nekton they are forms of ocean life that swim. like wales, seals, dolphins, squid, octopusses,and other fishes. nekton are able to catch pray and evade predators due to their skill of swimming. nekton are at all levels of the ocean.
what are benthos they are animals such as barnicales, oyesters, crabs and etc. these are organisms that live on the ocean floor.
how can you map the ocean floor by echo sounding, radar sonar, and seismographic surveys
what is a thermocline A layer in a large body of water, such as a lake, that sharply separates regions differing in temperature, so that the temperature gradient across the layer is abrupt.
oceanographer The exploration and scientific study of the ocean and its phenomena. Also called oceanology.
bathyal zone the steep descent of the seabed from the continental shelf to the abyssal zone
abyssal zone relating to ocean depths from 2000 to 5000 meters
Created by: MC2