Across
- 2. A seafloor mountain system formed by plate tectonics
- 6. Curved chains of volcanic islands
- 7. When tectonic plates split apart from each other
- 10. When tectonic plates move towards each other and collide
- 12. Created when tectonic plates are pushed together
- 13. Steep depressions in the deepest parts of the ocean
- 15. When tectonic plates move away from each other
Down
- 1. Made up of lower crust and uppermost mantle, above asthenosphere
- 3. Volcanic areas that are fed by the underlying mantle
- 4. An ancient supercontinent that eventually split into the 7 continents
- 5. When tectonic plates slide past each other horizontally
- 8. When one tectonic plate slides under another tectonic plate
- 9. A fracture or zone of fractures between 2 pieces of rock
- 11. Made up of the upper mantle, below lithosphere
- 14. A region where tectonic plates move apart