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6. Which is correct?

  • Spring tides = constructive interference
  • Spring tides = destructive interference

7. Thermohaline circulation is generated by

  • differences in water temperatures
  • differences in salinity or temperature
  • differences in sedimentation rates and temperature

8. What comprises of the: intertidal/littoral zone, sublittoral zone, bathyal zone, abyssal zone and hadal zone?

  • The aphotic zone
  • Benthic
  • The pelagic

9. What is the ppt salinity of sea water?

  • 62ppt
  • 60ppt
  • 35ppt
  • 34ppt

10. How many types of wave are there?

  • 3
  • 5
  • 6
  • 8

11. Destructive interference produces

  • low high tides and high low tides
  • high high tides and low low tides

12. When the earth moon and sun are aligned in a straight line which tide occurs?

  • Spring tide
  • Neap tide

13. Solar radiation only influences the upper...

  • 100m
  • 300m
  • 200m
  • 400m

14. What is the pH of seawater?

  • 7.8-8.4
  • 7.2-8.0
  • 7.0-8.4

15. Constructive interference produces

  • high high tides and low low tides
  • low high tides and high low tides

16. Which live in the bottom of the seabed?

  • Infauna
  • Epifauna

17. Which order is correct

  • photic zone, dsyphotic zone, aphotic zone
  • dsyphotic zone, photic zone, aphotic zone

18. Which of the two zones in the pelagic is shallow and overlies the continental shelf?

  • Neritic zone
  • Oceanic zone

19. What is not a main output of salt from seawater?

  • Erosion
  • Sedimentation
  • Evaporation

20. When the earth moon and sun are aligned forming a right angle which tide is formed?

  • Neap tide
  • Spring tide