Across
- 6. The study of earthquakes
- 7. One of the main causes for tsunamis
- 9. Ring with much seismic activity
- 10. When two plates slide past one another
Down
- 1. Worst tsunami struct here in 2004
- 2. When two plates collide with one another
- 3. Fukushima was struct by one in 2011
- 4. Units to measure earthquakes
- 5. When two plates move away from one another
- 8. Largest ocean