Across
- 1. ____ ____'s move at the rate of our nails
- 5. A boundary that is colliding
- 6. A boundary that is sliding
- 9. A boundary that is dividing
- 10. _____'s in the mantle cause tectonic plates to move
- 11. When an oceanic plate sinks under a continental one
- 12. The center of the earth (out of 4)
Down
- 2. Alfred Wegener's "strange" theory
- 3. The layer of the earth that has many convection currents
- 4. The 3rd layer from the top of the earth (out of 4)
- 7. Crust and upper mantle
- 8. The upper most layer of the earth
- 9. An oceanic crust is more _____ than a continental one