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Holzshu SOL 5.6

SOL 5.6 Oceans: Mr. Holzshu's 5th Grade Science

QuestionAnswer
Oceans cover about 70 percent of the surface of Earth.
continental shelf The area of seabed around a large landmass where the sea is relatively shallow compared with the open ocean.
continental slope The slanting between the outer edge of the continental shelf and the deep ocean floor.
continental rise A wide, gentle incline from an ocean bottom to a continental slope.
sediments sand, mud, rocks.
Ocean trenches are very deep.
is relatively shallow continental shelf.
Ocean water is a complex mixture of gases (air) and dissolved solids (salts, especially sodium chloride).
Marine organisms are dependent on dissolved gases for survival.
The salinity of ocean water varies in some places depending on rates of evaporation and amount of runoff from nearby land.
Salinity Amount of salt in the ocean.
The basic motions of ocean water are the waves, currents, and tides.
the Gulf Stream caused by wind patterns and the differences in water densities (due to salinity and temperature differences).
mixing of ocean waters can affect plant and animal populations.
Currents affect navigation routes.
As the depth of ocean water increases, the temperature decreases,
the pressure increases and the amount of light decreases As the depth of ocean water increases
Plankton are tiny free-floating organisms that live in water.
Animal-like plankton are called zooplankton.
Plant-like plankton are called phytoplankton
phytoplankton carry out most of the photosynthesis on Earth.
photosynthesis from phytoplankton provide much of Earth’s oxygen.
Phytoplankton form the base of the ocean food web.
Plankton flourish in areas where nutrient-rich water upwells from the deep.
Created by: erichholzshu on 2012-11-21



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