Across
- 2. A single landmass
- 4. Where two plates slip past each other
- 7. Hypothesis was the continents was once joined together
- 11. Plate motions into a single theory
- 16. Where the crust bends downward
- 17. Begins at a Mid Ocean Ridge
- 19. Something Wegener used to support his hypothesis for Continental Drift
- 20. Made of rock that's very hot
Down
- 1. Dense ball of solid metal
- 3. The Andes Mountain Range of Western South America was formed at a ____ boundary
- 5. Seams that formed mountain ranges that ran along some ocean floors
- 6. Device to measure the distance to an object
- 8. Fine grained rock
- 9. Crust and uppermost mantle into a single layer
- 10. Flow that transfer heat within a few minutes
- 12. An idea that the continents slowly moved over Earth’s surface
- 13. Broken pieces separated by cracks
- 14. When crust closer to a mid-ocean ridge moves away from the ridge and toward a deep-ocean trench
- 15. Plates move in opposite directions
- 18. Found in land and at the bottom of the ocean