1.  The most common salt in ocean water is ________________________.  (p. 340)

2.  When water carried to the shore in waves returns to the ocean, a(n) _____________________
     forms.  (p. 349)

3.  The density of ocean water is ________________ than that of pure water.  (p. 341)

4.  Currents that flow from the poles toward the equator are __________________ currents.
     (p. 348)

5.  Surface currents in the Northern Hemisphere flow in a ________________________ direction.
     (p. 347)

6.  The daily changes in ocean water level caused by the gravitational pull of the sun and the
     moon are _____________________. (p. 356)

7.  The major gases dissolved in ocean water are _____________________, ____________, and
     ________________. (p. 340)

8.  A thermocline is determined by a change in ______________________. (p. 341)

9.  Areas that have one high tide and one low tide each day are described as having a
     _____________________ tide pattern.  (p. 357)

10. Areas that have two high tides and two low tides each day are described as having a
      ___________________ tide pattern.  (p. 357)

11. Current tide patterns repeat every _______ hours and ______ minutes.  (p. 357)

12. When the moon and sun form a right angle, their gravitational forces pull in different
      directions to form a _______________ tide.  (p. 358)

13. Periods of spring tides and neap tides occur ___________each month.  (p. 358)

14. Tides with the least difference between high and low are called _____________ tides.  (p. 358)

15. The Coriolis Force causes the earth's ____________________________ to move in a curved
      path.  (p.345)

16. The earth's rotation causes winds blowing toward the equator to curve
      ______________________.   (p.346)

17. Upwelling occurs as a result of differences in water ________________.   (p.348)

18. As water depth increases, pressure ______________________.  (p.341)

19. The water in an estuary has __________________ salinity than most of the ocean. (p.340