Across
- 1. a device used to measure the vibrations of an earthquake
- 3. when one tectonic plate moves under the other
- 4. the liquid layer of the core of the earth
- 6. where two tectonic plates are separating from each other
- 10. when the earth begins to shake uncontrollably due to seismic waves
- 11. a well known tectonic belt where many of the world's volcanoes are located
- 12. the outermost and thinnest layer of the earth
- 14. the theory that the continents are constantly drifting away from each other
- 16. boundary where two tectonic plates meet
- 18. a vent in the earth that erupts
- 19. the layer of the earth in between the crust and the core
- 20. the bottom of the ocean
Down
- 2. where oceanic plates sink down into the earth
- 5. the exact middle point of an earthquake
- 7. the scale at which the intensity of an earthquake is measured
- 8. where two tectonic plates slide past each other horizontally
- 9. the large landmass that used to be every continent combined
- 13. the solid innermost layer of the core of the earth
- 15. a place where two tectonic plates slide past each other
- 17. the movement of the Earth's crust