Chapter 21: Movement of the Oceans

1. Chapter 21: Movement of the Oceans Study Notes

2. 1 • A current that forms _______ is called a ________ current. • sandbars • longshore

3. 2 • A _____ ______ occurs where a _____ enters the ocean. • tidal • bore • river

4. 3 • A ______ _____ is a type of ____ ______. • turbidity • current • deep • current

5. 4 • ______ have the effect of moving ______ on the ocean floor • Breakers • sediments

6. 5 • Calling a _____ a tidal wave is misleading because a tsunami is not caused by tides • tsunami

7. 6 • _____ currents are caused by differences in _________ of ocean water. • Deep • density

8. 7 • ______ evaporation and ___ ______ in summer cause the Mediterranean Sea to have higher ______ and higher density • High • low • rainfall • salinity

9. 8 • _______ ____ grow larger because they get more _____ form the wind • Larger • waves • energy

10. 9 • Most ocean locations have ___ ___ tides and ___ ____ tides daily because there are two tidal bulges • two • high • two • low

11. 10 • Motions in ocean water that occur as ____ _______ move around the ocean basins are called tidal _______. • tidal • bulges • oscillations

12. 11 • ____ tides occur when the gravity of the sun and moon work ______ each other to create a _____ daily tidal range • Neap • against • small

13. 12 • One characteristic of the Antarctic ______ Water is high __________. • Bottom • density

14. 13 • Salinity does _____ control the movement of _______ currents. • NOT • surface

15. 14 • _________ are formed by __________ currents • Sandbars • longshore

16. 15 • The ______ _______ causes gyres to form • Coriolis • Effect

17. 16 • The curving of the path of ocean currents and wind belts is called the ______ _____ • Coriolis • Effect

18. 17 • The _______ in levels of ocean water at high tide and low tide is called ___ _____. • difference • tidal • range

19. 18 • The factors that determine the size of a wave are wind ______, ____, and the length of _____ the wind blows. • speed • fetch • time

20. 19 • The force that causes ____ is _______ • tides • gravity

21. 20 • The _______ point of a wave is its ____ • highest • crest

22. 21 • The major cause of _____ is the gravitational pull of the _____ on the Earth and its waters. • tides • moon

23. 22 • The swift, _____ current that flows northward along the east coast of the United States is called the ____ ______ • warm • Gulf Stream

24. 23 • The _____ ______ that flows toward the ocean is called _____ ____. • tidal • current • ebb • tide

25. 24 • Tides that occur during the ___ ____ and the full moon, when the daily tidal ____ is greatest, are called ____ tides. • new • moon • range • spring

26. 25 • Two consecutive wave crests pass a given point in one ______ ________. • wave • period.

27. 26 • Very ____ ____ are usually the result of a _____ _____. • large • waves • long • fetch

28. 27 • Water ____ move in one complete ______ in a wave during a single wave period • particles • circle

29. 28 • Waves strike the coastline head-on instead of at an angle as a result of ________. • refraction

30. 29 • When the tidal current flows _____ the coast, it is called a ____ _____. • toward • flood • tide

31. The End ??