Wave Action

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Across
  1. 4. vertical distance from the crest to the trough
  2. 6. Waves shape a beach by ___________the shore in some places and building it up in others
  3. 7. usually caused by an earthquake beneath the ocean floor
  4. 9. the movement of energy through a body of water
  5. 10. One way to reduce beach erosion is to build a wall of rocks or concrete, called
Down
  1. 1. movement of sand along the beach is called
  2. 2. The white-capped waves that crash onto shore
  3. 3. the horizontal distance between crests
  4. 5. how waves are measured
  5. 8. underwater slope, forming a long ridge