Across
- 4. Plates moving together
- 6. Opening where magma escapes
- 7. Large section of Earth’s lithosphere
- 8. Crack where plates pull apart
- 10. Underwater mountain range
- 14. Ocean bottom that spreads
- 15. Ancient supercontinent
- 18. Study of Earth’s crust movement
- 19. Occurs at all 3 boundary types
- 20. Magma that reaches the surface
Down
- 1. One plate sinking beneath another
- 2. Plates sliding past each other
- 3. Melted rock beneath Earth’s surface
- 5. Plates moving apart
- 9. Deep valley in ocean floor
- 11. Edge where tectonic plates meet
- 12. Layer beneath the crust
- 13. Break in Earth’s crust
- 16. Plate made of land crust
- 17. Outer layer of Earth