Across
- 3. squeezes and pulls apart rocks
- 4. Transverse waves
- 5. plates move away from each other
- 6. a bed in layers of rock
- 11. ground shaking
- 12. old oceanic plates sink
- 13. the location above the focus
- 15. Vibrations during an earthquake
- 17. creation of new oceanic crust
- 18. where a earthquake starts
Down
- 1. chain of underwater mountains
- 2. plates slide past each other
- 3. device that detects seismic waves
- 7. develop upon reaching the surface
- 8. a depression in the ocean floor
- 9. plates move towards each other
- 10. rocks move along this break
- 14. theory that the crust is moving
- 16. Compression waves