Across
- 2. Centre where seismic energy is released
- 7. The area on the surface where surface waves are strongest
- 10. Currents that cause the plates to move
- 11. Crust on which main landmasses are situated
- 12. The centre of the earth
- 13. Outermost layer of the earth
- 15. Boundary where two plates separate
Down
- 1. A wave as a result of an underwater earthquake
- 3. When one plate is forced beneath another
- 4. Crust than is thin and dense
- 5. Scale to measure magnitude of an earthquake
- 6. A device used to measure the strength of earthquakes
- 8. Boundary where two plates slide past each other
- 9. Boundary where two plated collide
- 14. Large volcanic island on the boundary of the American and Eurasian plates