Across
- 3. major tectonic plate that includes much of the continent of Africa
- 6. Thin plates that form the ocean floor; more dense than continental plates.
- 9. An opening in the Earth's crust through which lava, ash, and gases erupt.
- 12. Major tectonic plate which includes the continent of South America.
- 13. A supercontinent containing all of Earth land.
- 15. A theory stating that the earth's surface broken into plates that move.
- 16. A German scientist
- 18. Oceanic tectonic plate that lies beneath the Pacific Ocean.
- 19. moving or extending in different directions from a common point.
- 20. One plate going under another plate
Down
- 1. The hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present.
- 2. Is the mostly-solid bulk of Earth's interior.
- 4. tectonic plate containing the continent of Antarctica.
- 5. Change with time of the position or orientation of a body.
- 7. Very hot, very dense center of our planet
- 8. Tectonic Plate covering most of North America Cuba, the Bahamas.
- 10. Deep valley in the ocean floor
- 11. The edges of tectonic plates.
- 14. A plate boundary where two plates move toward each other.
- 17. tectonic plate that includes most of the continent of Eurasia.