exam 2

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  1. For the most part our oceans are made up of...
    water H20
  2. Salinity is measured by...
    parts per thousand
  3. What percentage of Earth is covered by oceans?
  4. Salinity ions are constantly being added to seawater through...
    river run-off
  5. Salinity ions are constantly being removed from seawater through
    biologic activity
  6. Ocean water____ to density with depth in the mid lattitudes
  7. Ocean water_________ in temperature with depth in the mid latitudes
  8. Where would you expect to ind surface sea water with the highest salinity?
    -at 30 degrees north latitude
  9. Where would you expect to find surface sea water with the lowest salinity?
    At mouth of the amazon river
  10. Earthquakes would most likely be found...
    at an active continental margin
  11. The major force at the lithosphere thought to be driving plate motion is...
    slab pull
  12. Which of the following can not be used to discern plate motion rates?
    motions we feel during earthquake
  13. Generally speaking the oldest crust material is found
    on the continents
  14. The oldest ocean floor is found...
    along trenches at the subduction zones
  15. Where would you expect to find ocean water with the highest ratio of chlorine ions to sodium dissolved?
    nowhere as the ratio of dissolved ions does not change
  16. Across the whole planet, the plate boundary with the aboslute most amount of volcanism is
    divergent boundaries
  17. Transform fault boundaries are most often found
    seperating and offsetting sections of divergent boundaries
  18. Surface waves are primarily driven by
  19. The area of land where water meets continent is
    the coast
  20. Dunes and Berms are often found in
    the backshore of the beach zone
  21. The range between high tidal reach and low tidal reach is
    the foreshore of the beach zone
  22. The area behind the beach zone is
    the coast
  23. When the tops of waves overrun the base of the orbital motion, the waves....
  24. Waves far from the coastal areas swells exhibit
    orbital motion restricted to the near surface
  25. Beaches made be made up of...
    quartz sand, black volcanic glass, pieces of shells, and rocks
  26. Wave breakers form at a beach....
    orbital motion breaks down
  27. what is a rip current?
    an intermittent strong surface current
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exam 2
exam 3
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