oceans Flashcards
(25 cards)
63.8 million miles squared
pacific ocean
41.1 million miles squared
atlantic ocean
27.24 million miles squared
indian ocean
5.427 million miles squared
arctic ocean
7.849 million miles squared
southern ocean
a measure of the amount of dissolved salts of a given amount of liquid
salinity
aka the sunlight zone, from the surface to 660 feet of ocean
surface zone
the temperature of a level of ocean
thermocline
the area in which light begins to lessen, starts at the end of the sunlight zone (660 feet)
deep zone
the continuous movement of water from the ocean to the atmosphere to the land and back to the ocean
water cycle
the physical change from a liquid to a gas
evaporation
the physical change from a gas to a liquid
condensation
solid or liquid water that falls to Earth
precipitation
the gently sloping section of the continental margin located between the shoreline and the continental slope
continental shelf
the steeply inclined section of the continental margin located between the continental rise and the continental shelf
continental slope
the gently sloping section of the continental margin located between the continental slope and the abyssal plain
continental rise
the broad, flat part of the deep-ocean basin
abyssal plain
a long, undersea mountain chain that forms along the floor of the major oceans
mid-ocean ridge
a long, narrow valley that forms as tectonic plates separate
rift valley
a submerged mountain on the ocean floor that is at least 1,000 meters high and that has a volcanic origin
seamount
a steep, long depression in the deep-sea floor that runs parallel to a chain of volcanic islands or a continental margin
ocean trench
the mass of mostly microscopic organisms that float or drift freely in freshwater and marine environments
plankton
all organisms that swim actively in open water, independent of currents
nekton
the organisms that live at the bottom of the sea or ocean
benthos