Across
- 2. – Earth's outer shell
- 4. – Ancient supercontinent
- 8. – Earth’s innermost layer
- 9. – Oceanic crust surface
- 10. – Semi-fluid layer below lithosphere
- 12. – Plates moving apart
- 14. – Ground shaking from movement
- 16. – Plates sliding past
- 18. – One plate sinks below another
- 19. – Erupting mountain
Down
- 1. – Molten rock below surface
- 2. – Heat-driven mantle motion
- 3. – Layer beneath the crust
- 5. – Rigid outer part of Earth
- 6. – Plates moving together
- 7. – Moving slab of lithosphere
- 11. – Mid-ocean mountain chain
- 13. – Crack where movement occurs
- 15. – Deep ocean valley
- 17. – Edge between two plates