Coastal Geology Crossword

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Across
  1. 2. These types of special tides form when the Moon and Sun are in perpendicular alignment
  2. 4. Waves move in _______ motion
  3. 6. Waves crash over the top of themselves because their velocity _______
  4. 7. Similar to a tsunami, these are huge wind-driven waves associated with hurricanes and tropical storms
  5. 10. The gravitation pull of the Moon will form two tidal _____ to form on opposite sides of the Earth
  6. 11. Small breaker walls set up in intervals along a beach. Help slow down longshore drift erosion
  7. 12. This happens when waves slow down, after moving from deeper to shallower waters
  8. 14. These types of waves are 'in phase' and build higher amplitude waves
  9. 15. These headline features form once waves have completely bored a hole through a headland
  10. 16. These types of special tides form when the Moon and Sun align
  11. 17. These quiet water coves are protected by a barrier island
  12. 18. These protruding features form as refraction bends waves to weather opposite sides of the coastline
Down
  1. 1. These coastline currents run parallel to the shoreline
  2. 3. Wave depth = 1/2 __________
  3. 5. These types of waves are 'out of phase' and cancel each other out
  4. 8. Tides are typically driven by the gravitation pull of the _______
  5. 9. Waves are driven/formed most commonly by the _____
  6. 10. Estuaries are where river mouths mix with tidal waters, causing ______ waters
  7. 13. This is left behind once a sea arch collapses
  8. 15. This feature is produced by longshore drift depositing beach sand off the shore