Across
- 2. a crack in a boundary
- 3. to soak up or take in
- 7. to crash into each other
- 8. to act on or influence each other
- 10. energy released in waves
Down
- 1. giant wave
- 4. a line that forms an edge
- 5. anything built
- 6. huge parts of Earth's crust on which the continents and oceans rest
- 9. the power to use in action and work