Across
- 5. At a _______ boundary, plates come together or converge.
- 8. Earth’s plates are in slow constant motion
- 9. Boundary where earthquakes happen
- 11. The theory that the continents have moved
- 12. Supercontinent
- 13. Sea-floor ______
- 15. Earth’s plates meet at ______.
- 17. San Andreas is an example of a _____.
- 18. Molten material that forms the ocean floor
- 19. Magma close to the mid-ocean ridge is hotter and ________.
Down
- 1. Deep valley formed from divergent plates
- 2. The layers of magnetic fields that differ with each stripe
- 3. This is created when an oceanic plate goes underneath a continental plate
- 4. Boundary where plates move away from each other
- 6. Cooled lava in pillow like shapes
- 7. Magma on the ocean floor farther away from the mid-ocean ridge is _____ and denser.
- 10. Underwater mountain ranges are also known as ________.
- 14. When one plate goes under the other
- 16. Drilling _____ Scientists collected from the ocean floor.
- 20. Tool that helped scientists see map the ocean floor