Across
- 5. the hot molten rock that erupts out of a volcano
- 8. the formation of new ocean floor
- 10. the outer most part of the earth's core
- 11. what happens when hot molten rock spurts out of a volcano
- 13. a region when two tectonic plates move away from each other
- 15. the places where tectonic plates crash together
- 19. a seismic wave that travels along or parallel to the earth's surface
Down
- 1. a zone of seismic and volcanic activity
- 2. a wave in the earth produced by an earthquake
- 3. a small volcano built of ash and cinder
- 4. a landmass that existed before the continents were separated
- 6. a region where two tectonic plates collide
- 7. made up of different materials
- 8. an earthquake wave that travels through the interior of the earth
- 9. big slabs of rock under the surface of the earth that can cause earthquakes
- 12. the crust and upper mantle of the earth
- 14. when tectonic plates shift under the earth's surface
- 16. the innermost part of the earth's core
- 17. the part of the earth between the crust and the core
- 18. the amount of energy an earthquake lets out