Across
- 4. Wegener's theory about the continents
- 5. deepest, solid layer of the Earth
- 6. stress found at a convergent boundary
- 7. layer of the mantle that is solid but moves around like a liquid
- 9. upper layer of the Earth
- 11. plate that is nicknamed Ring of Fire
- 13. stress found at a divergent boundary
- 16. stress found at a transform boundary
- 17. layer that makes up 67% of Earth's mass
- 18. remains of plants and animals that provided evidence of continental drift
- 19. made of liquid iron and nickel
Down
- 1. boundary when plates separate
- 2. boundary when plates collide
- 3. movement in the mantle that causes the plates to move around
- 8. when one plate slides under another plate
- 10. made of continental crust and oceanic crust
- 12. name of one supercontinent
- 14. where most earthquakes & volcanoes are located
- 15. layer that includes the crust and upper mantle