1. Chapter 20 Study Notes Ocean Water

2. 1 A layer of _____ covering ocean water in Polar Regions is called ____ ______. A layer of _____ covering ocean water in Polar Regions is called ____ ______. –ice –pack ice.

3. 2 A major problem for ________ is ________. A major problem for ________ is ________. –aquaculture –pollution.

4. 3 As deep ocean water becomes ________, it also becomes ________ and ______ through the ocean basins. As deep ocean water becomes ________, it also becomes ________ and ______ through the ocean basins. –colder, –denser –sinks

5. 4 As the ________ changes, the ocean and atmosphere are continuously exchanging ___________. As the ________ changes, the ocean and atmosphere are continuously exchanging ___________. –temperature –gases.

6. 5 By studying variations in _____ in the ocean, scientists can determine the presence of ________. By studying variations in _____ in the ocean, scientists can determine the presence of ________. –color –phytoplankton.

7. 6 _______________ dissolve most easily in _____________ ocean water. _______________ dissolve most easily in _____________ ocean water. –Gases –cold

8. 7 In addition to increased use of _____ chemicals, increased world _______ has reduced the ocean’s ability to renew itself. In addition to increased use of _____ chemicals, increased world _______ has reduced the ocean’s ability to renew itself. –toxic –population

9. 8 ______ _______ live in the ______ zone. ______ _______ live in the ______ zone. –Marine –mammals –pelagic

10. 9 Most ______________ enters the ocean from the ______________________. Most ______________ enters the ocean from the ______________________. –oxygen –atmosphere

11. 10 Most offshore ________ and petroleum deposits are found along continental _________________. Most offshore ________ and petroleum deposits are found along continental _________________. –oil –margins.

12. 11 Most wavelengths of visible ______ are absorbed by ocean water and microscopic sea life, the one color that is most _________ is _______. Most wavelengths of visible ______ are absorbed by ocean water and microscopic sea life, the one color that is most _________ is _______. –light –reflected –blue.

13. 12 Ocean water ________ depends on the solar energy an area receives and the water’s ________________. Ocean water ________ depends on the solar energy an area receives and the water’s ________________. –temperature –movement.

14. 13 ______ are the foundation of life in the ocean because they form the base of the ocean ______ _____. ______ are the foundation of life in the ocean because they form the base of the ocean ______ _____. –Plankton –food chain.

15. 14 _____ is the “_______of life” in the ocean. _____ is the “_______of life” in the ocean. –Plankton –foundation

16. 15 Raising aquatic plants and animals for human consumption is __________. Raising aquatic plants and animals for human consumption is __________. –aquaculture.

17. 16 _____ _____ are an example of _______. _____ _____ are an example of _______. –Sea sponges –benthos.

18. 17 Some of the most deadly _________ found in ocean water today include mercury, toxic chemicals such as DDT, and ________. Some of the most deadly _________ found in ocean water today include mercury, toxic chemicals such as DDT, and ________. –pollutants –lead.

19. 18 The most ______ ocean resource, found beneath the ocean floor, is _________. The most ______ ocean resource, found beneath the ocean floor, is _________. –valuable –petroleum.

20. 19 The Ocean is often referred to as a ______ _____ because it contains 60 times more carbon than the atmosphere. The Ocean is often referred to as a ______ _____ because it contains 60 times more carbon than the atmosphere. –carbon –sink

21. 20 The ocean is the main source of the _____ minerals _______ and _______. The ocean is the main source of the _____ minerals _______ and _______. –trace –magnesium –bromine.

22. 21 The ocean zone that receives the ______ _____ energy and is home to the most diverse ocean life forms is the ______ _________. The ocean zone that receives the ______ _____ energy and is home to the most diverse ocean life forms is the ______ _________. –most –solar –pelagic zone.

23. 22 The process of _______ salt from ocean water is called ___________. The process of _______ salt from ocean water is called ___________. –removing –desalination.

24. 23 ________ elements in the ocean are those minerals that are _______ in amount. ________ elements in the ocean are those minerals that are _______ in amount. –Trace –smallest

25. 24 When surface ocean water is ______ by solar energy, its density _________. When surface ocean water is ______ by solar energy, its density _________. –warmed –decreases.

26. THE END