Plate Tectonics
Across
- 2. Molten rock underneath the Earth
- 4. Alfred ____ first to term Pangaea
- 5. A sedimentary rock
- 7. South America and _______ were once joined
- 10. This word means 'change'
- 12. Mid-ocean ______ form when plates move apart
- 16. Oceanic & continental ___ float over mantle
- 17. Volcanoes spew ____ during an eruption.
- 18. Name of your science teacher
- 21. Heat & _____ can change a rock
- 22. Formed when two plates move towards each other
- 23. part of the mantle where plates float on
- 25. Diamonds are made up of pure
- 26. Outer layer of the Earth is solid rock
- 28. The study of the Earth and rocks
- 29. Method used to date artifacts
- 30. Earth crust and upper mantle form
Down
- 1. Supercontinent that formed millions of years ago
- 3. Earthquakes and landslides are known as
- 4. One of the agents of erosion
- 6. Pangaea broke apart 200 ______ years ago
- 8. Outer core is ________ rock
- 9. Geological hazard occurs when plates move
- 11. A fossil key to theory of Plate Tectonics
- 13. This type of rock includes basalt
- 14. two plates move apart
- 15. the breaking down of rocks
- 19. plates slide past each other
- 20. These currents occur in the mantle
- 24. A deep ocean _____ form when plates collide
- 27. two plates move towards each other