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5 Written questions

5 Matching questions

  1. Eastern
  2. Ebb Current
  3. Wave Frequency
  4. 1:7
  5. Tidal Datum
  1. a Maximum ratio of wave height to wavelength seen in the open ocean. Also known as wave steepness.
  2. b Water rushing out of an enclosed harbor or bay because of the fall in sea level as a tide trough approaches.
  3. c Eddies do not tend to form in these boundary currents.
  4. d The reference level (0.0) from which tidal height is measured.
  5. e Number of waves passing a fixed point per second.

5 Multiple choice questions

  1. Waves with ___________ wavelengths move the fastest.
  2. Uninterupted distance over which the wind blows without significant change in direction.
  3. A high, often breaking wave generated by a tide crest that advances rapidly up an estuary or river.
  4. These waves have a wavelength greater than 1.73cm. The restoring force is gravity and momentum. Wind waves are one example of these waves.
  5. A "no-tide" point in an ocean caused by basin resonances, friction, and other factors around which tide crests rotate. About a dozen amphidromic points exist in the world ocean. Sometimes called a node.

5 True/False questions

  1. SemidiurnalThis type of tidal cycle is found commonly in the Gulf of Mexico.


  2. TransverseThe West Wind Drift is an example of this type of boundary current.


  3. Constructive interferenceThe subtraction of wave energy as waves meet producing smaller waves.


  4. NeapWaves with ___________ wavelengths move the fastest.


  5. ClockwiseLow water position corresponding to a tidal trough


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