Ocean Flashcards
Pacific ocean
The Pacific ocean is the largest and deepest, 724
Atlantic ocean
The Atlantic is the second largest, 322
Indian ocean
Third largest ocean, 292
Arctic ocean
Fifth largest ocean, 12
Southern ocean
Fourth largest ocean
salinity
a measure of the amount of dissolved salts in a given amount of liquid.
surface zone
sunlight heats upper level of water, surface currents heat the rest
thermocline
Huge tempurature drop from top to bottom of layer, middle layer
deep zone
coldest water, deeper than 700 meters
water cycle
the movement of water from the ocean to the sky to the land.
evaporation
When water turns to vapor
condensation
a gas to a liquid
precipitation
rain, snow, sleet, or hail that falls to the ground
continental shelf
the gently sloping section of the continental margin located between the shoreline and the continental slope
continental slope
the steeply inclined section of the continental margin located between the continental rise and the continental shelf
continental divide
a drainage divide on a continent such that the drainage basin on one side of the divide feeds into one ocean or sea, and the basin on the other side either feeds into a different ocean or sea, or else is endorheic, not connected to the open sea
abyssal plain
a large flat almost level area of the deep ocean basin
mid-ocean ridge
a long undersea mountain chain that forms along the floor of the major oceans
rift valley
a long narrow valley that forms as tectonic plates seperate
seamount
a submerged mountain on the ocean floor that is at least 1,000 m high and that has volcanic origin
ocean trench
a steep and long depression in the deep seafloor that runs parallel to a chain of volcanic islands or a continental margin
plankton
the small and microscopic organisms drifting or floating in the sea or fresh water
nekton
aquatic animals that are able to swim and move independently of water currents
benthos
the flora and fauna found on the bottom, or in the bottom sediments, of a sea, lake, or other body of water
desalination
the process of removing salt from seawater