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