Across
- 4. Determines the hardness of rocks and their resistance to erosion
- 5. Observed to know the amount of energy in waves
- 6. Wave ______ is the process by which waves change direction as they approach a coast
- 7. Help trap sediments and reduce coastal erosion
- 9. Structures comprising colonies of billions of tiny polyps
- 11. Resistant rocks which extend into the sea
- 15. The distance the wind has travelled over seas and oceans to form waves
- 17. When rock particles carried away by waves rub or hit against one another, they break down into smaller pieces and become smoother and more rounded over time
- 18. ______ currents are ocean currents that flow parallel to a coast
- 20. Lowest part of a wave
Down
- 1. Interaction between communities of plants, animals and the environment
- 2. The type of wave that is also known as swells and spilling breakers
- 3. Affects coastal environments
- 8. Motion that rapidly decreases with depth
- 10. Loses energy due to gravity and friction with the land and returns to the sea as backwash
- 12. Affects the movement of waves
- 13. A long, narrow ridge of sand or pebbles with one attached to the land
- 14. Where the lithosphere and hydrosphere meets
- 16. Large-scale, continuous movements of water in seas and oceans
- 19. Pillar of rock in the sea left behind after an arch collapses