Across
- 1. gradual movement of soil down a slope
- 5. when structures sink into wet ground
- 7. a depression in the land
- 9. most active earthquake zone
- 11. where plates move away from each other
- 14. a large tidal wave
- 15. used to measure the strength of an earthquake
- 16. molten rock in the asthenosphere
- 17. where one plate sinks below the other
Down
- 2. a trembling that results in movements of the crust
- 3. scientists who study volcanoes
- 4. a tall, cone-shaped volcano
- 6. where plates crash into each other
- 8. an opening where volcanic material emerges
- 10. also known as the hypocenter
- 12. famous island formed by volcanic eruptions
- 13. has not erupted in 100 years