Across
- 3. new oceanic crust to form
- 4. currents heat by radiator
- 5. flowing layer of earth
- 8. ring of fire
- 10. shaking the ground
- 12. large ocean waves
- 13. scientific theory
Down
- 1. rapid movement of mass rock
- 2. ash,lava, and gases
- 6. plate tectonics
- 7. thickest layer of earth
- 8. two plates move away
- 9. outer layer of earth
- 11. rocky mountains