Across
- 2. One plate moves beneath another
- 4. Rock type formed under pressure and heat
- 7. Rock type formed from cooled magma or lava
- 11. Spot where earthquake starts underground
- 13. Molten rock erupted onto the surface
- 14. A break in the Earth's crust where movement occurs
- 15. Rigid outer part of Earth (crust + upper mantle)
- 17. Earth's outermost solid layer
- 19. Process where rocks change type in cycle
- 23. Mountain that erupts molten material
- 24. Cycle involving creation/destruction of crust
- 25. Theory explaining plate movement
- 26. Circular movement of material in mantle
- 28. Boundary where plates slide past each other
- 29. Layer beneath the crust composed of silicate rocks
- 30. Rock type formed from sediment compaction
- 31. Point on surface directly above earthquake focus
- 33. Heat transfer driving plate tectonics
- 34. Boundary where plates move apart
- 35. Soft layer allowing plate movement
- 36. Instrument to detect earthquake waves
- 37. Boundary where plates collide
Down
- 1. Mid-ocean ridge is example of this boundary
- 3. Fracture zone example of this boundary
- 5. A rigid segment of Earth's lithosphere
- 6. Semi-fluid layer under the lithosphere
- 7. Large landform formed by volcanic activity
- 8. Place where two plates meet
- 9. Slow movement of continents over time
- 10. Related to earthquakes or vibrations
- 12. Molten rock beneath Earth's surface
- 16. Caused by movement along a fault line
- 18. Huge sea wave caused by underwater disturbance
- 19. Scale measuring earthquake magnitude
- 20. Energy released by shifting plates
- 21. Boundary where crust is neither created nor destroyed
- 22. Central part of the Earth
- 26. Deep ocean trench example of this boundary
- 27. Release of magma, ash, and gas
- 32. Supercontinent from 300 million years ago