Across
- 6. - The semi-fluid layer beneath the lithosphere on which tectonic plates move.
- 7. - A deep valley formed as tectonic plates move apart, often found along mid-ocean ridges.
- 10. - Changes in Earth's magnetic field, recorded in oceanic crust, that support plate movement.
- 12. - A mountain range in the Atlantic Ocean where seafloor spreading occurs.
- 13. - Large sections of Earth's crust that move over the mantle.
- 14. - The southern part of the supercontinent Pangaea.
- 15. - A supercontinent that existed millions of years ago, where all Earth's landmasses were joined together.
Down
- 1. - The rigid outer part of the Earth, consisting of the crust and upper mantle.
- 2. - The theory that continents have moved over geological time to their current locations.
- 3. - Remains or impressions of prehistoric organisms found on different continents, supporting the theory.
- 4. - The northern part of Pangaea that eventually split into continents
- 5. - Circular movements of molten rock within the Earth's mantle that drive plate movement.
- 8. - The scientist who proposed the theory of continental drift.
- 9. - The process by which new oceanic crust forms as magma rises at mid-ocean ridges.
- 11. - The process by which one tectonic plate is forced under another at convergent boundaries.