Across
- 5. this famous mountain range was created by continental collision
- 8. these form at this boundary that slides
- 9. the only fault that collides
- 11. rift valleys are made from this boundary
- 13. rising magma cools filling the cracks and spreading apart forming new crust
- 17. what is the boundary in which plates collide
- 18. the man who proposed the theory of seafloor spreading
- 20. uses sheer force
Down
- 1. when continental plates move apart this can possibly form
- 2. the fault where the hanging wall moves down
- 3. the point inside the earth in which the earthquake really happens
- 4. this is the boundary where most earthquakes happen
- 6. the system of ridges formed by this place
- 7. what pushes the plates around
- 10. the zone where the oceanic plate plunges beneath the less dense continental plate
- 12. the layer that is the crust of the earth and its upper mantle combined
- 14. the plastic like layer below the lithosphere
- 15. earths crust and part of the upper mantle broken into sections
- 16. the point on the surface above the earthquake
- 19. this was used to map the ocean