Across
- 2. A theory that explains how tectonic plates move and change
- 3. When two plates collide and one sinks under the other into the mantle
- 7. The theory that continents once were one landmass called Pangaea, but broke apart and moved to their current positions
- 8. A boundary formed by tectonic plates colliding
- 10. When magma rises towards the surface and forms new oceanic crust
- 12. The man who came up with the idea of continental drift
- 13. A boundary where two plates slide past each other
Down
- 1. Broken-up parts of the lithosphere
- 4. A ring of volcanoes around the Pacific
- 5. Contains the crust as well as the upper mantle
- 6. The supercontinent that consisted of all the current continents all together
- 9. Where two plates meet
- 11. Two plates moving away from each other