click below
click below
Normal Size Small Size show me how
Holzshu SOL 5.6
SOL 5.6 Oceans: Mr. Holzshu's 5th Grade Science
| Question | Answer |
|---|---|
| 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. |