Across
- 1. outer, thinnest layer of earth
- 3. point on surface above focus
- 4. rock layers found at angle
- 7. molten rock from within earth
- 11. two plates coming together
- 12. rock layers get warped or bent
- 13. two plates sliding past each other
- 17. scale describing amount of energy released by an earthquake
- 18. two plates moving opposite directions
- 19. sudden movement of rocks along a fault
- 20. records arrival time of earthquake waves
Down
- 2. large, fast moving wave
- 5. molten rock that breaks through the Earth's surface
- 6. layer of earth below crust
- 8. upper plastic mantle
- 9. pressure on rock layers causes breakage
- 10. rock sphere
- 14. point where the earthquake occurs
- 15. name of trench
- 16. introduced theory of crust movement