Across
- 3. the change in the shape of rock in response to stress
- 7. boundary where two tectonic plates push into one another
- 8. occur when opposing forces cause rock to break and move horizontally
- 11. places where sea-floor spreading takes place
- 12. cannot travel through materials that are completely liquid
- 13. the sudden return of elastically deformed rock to its original shape
- 16. contains nearly 75% of the world's active volcanoes on land
- 17. all the continents were joined together in a single land mass
- 18. the point inside the earth where an earthquake begins
- 19. can travel through solids, liquids and gasses
Down
- 1. type of volcanoes that are one of the most common types of volcanoes
- 2. measures earthquake strength
- 4. a break in the earth's crust
- 5. forms when moltenrock erupts onto the earth's surface
- 6. the amount of force per unit area that is put on a given material
- 9. a tracing of earthquake motion created by a seismograph
- 10. the study of earthquakes
- 13. point on earth's surface directly above an earthquakes starting point
- 14. boundary where two tectonic plates slide past each other
- 15. boundary where two tectonic plates move away from one another