Across
- 3. a steep-sided mount that forms when lava is extruded viciously
- 8. activity having to do with earthquakes
- 10. the opening of a volcano
- 11. point on the earth's surface directly above hypocenter
- 12. a weak point in earth's crust
- 14. the place where two or more plates meet
- 16. one or a series of huge waves caused by an earthquake
- 18. one of the sections that makes up earth's crust
- 19. smoke over a volcano
- 20. an area in the middle lithosphere
Down
- 1. a primary wave that travels through the interior of the earth and is usually the first wave to be recorded
- 2. seismic wave that travels through the earth
- 4. thin layer of earth's surface
- 5. magna once it has erupted
- 6. erupting mountain
- 7. shaking caused by sudden movement of plates
- 9. innermost layer of earth
- 13. layer of rock that lies between the crust and the outer layer
- 15. an earthquake that follows a larger earthquake
- 17. a movement of ash-sized particles