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Chapter 19

Chapter 19. The Ocean Basins. 1.Global Ocean. the body of salt water that covers nearly three-fourths of Earth’s surface. 2. Sea. a large, commonly saline body of water that is smaller than an ocean and that may be partially or completely surrounded by land. 3. Oceanography.

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Chapter 19

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  1. Chapter 19 The Ocean Basins

  2. 1.Global Ocean the body of salt water that covers nearly three-fourths of Earth’s surface.

  3. 2. Sea • a large, commonly saline body • of water that is smaller than • an ocean and that may be • partially or completely • surrounded by land.

  4. 3. Oceanography • the scientific study of the ocean, • including the properties and • Movement of ocean water, the • characteristics of the ocean • floor, and the organisms that • live in the ocean.

  5. 4. Sonar sound navigation and ranging, a system that uses acoustic signals and returned echoes to determine the location of objects or to communicate.

  6. 5. Continental Margin the shallow sea floor that is located between the shoreline and the deep-ocean bottom.

  7. 6. Deep-Ocean Basin • the part of the ocean floor • that is under deep water • beyond the continent margin • and that is composed of • oceanic crust and a thin layer • of sediment.

  8. 7. Trench • a long, narrow, and steep • depression that forms on the • ocean floor as a result of • subductionof a tectonic plate, • that runs parallel to the trend of a • chain of volcanic islands or the • coastline of a continent, and that • may be as deep as 11 km below • sea level.

  9. 8. Abyssal Plain a large, flat, almost level area of the deep-ocean basin.

  10. 9. Core Sample a cylindrical piece of sediment, rock, soil, snow, or ice that is collected by drilling.

  11. 10. Nodule • a lump of minerals that is • made of oxides of manganese, • iron copper, or nickel and that • is found in scattered groups • on the ocean floor.

  12. 11. Desalination a process of removing salt from ocean water.

  13. 12. Precipitation • any form of water that falls • to Earth’s surface from the • clouds; includes rain, snow, • sleet, and hail.

  14. 13. Condensation • the change of state from a • gas to a liquid.

  15. 14. Evapotranspiration • the total loss of water from an area, • which equals the sum of the water • lost by evaporation from the soil and • other surfaces and the water lost by • transpiration from organisms.

  16. 15. Water Cycle • the continuous movement of • water between the • atmosphere, the land, and • the oceans.

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