Across
- 2. core liquid layer of Earths core that lies beneath the mantle and the inner core
- 4. waves vibrations that travel through the Earth due to earthquakes
- 10. the surface along which rocks break and slide past each other
- 11. sea that surrounds Pangaea
- 12. extends from the bottom of the mantle to the center of the Earth
- 13. wall the fault block that hangs above a fault
- 14. core solid dense center of our planet that extends from the bottom of the outer core to the center of the Earth
- 16. upward horizontal stress that acts on a rock
- 18. wall the fault block that is below a fault
- 20. downward horizontal stress that acts on a rock
Down
- 1. the amount of force per unit that is put on a given material
- 3. separate continents of today were once joined in a single land mass
- 5. layer of the earth between the crust and the core
- 6. type of stress that occurs when an object is squeezed
- 7. outmost layer of the Earth
- 8. drift theory that continents can drift apart and have done so in the past
- 9. rock layers bend due to stress in the Earth's crust
- 15. rock layers are folded so that both ends of the fold are still horizontal
- 17. scientist who studied many observations before establishing the theory of the continental drift
- 19. stress that occurs when force acts on an object