Plate Tectonics
Across
- 3. Supercontinent over 300 million years ago.
- 5. Plates slide apart.
- 7. Plates come together .
- 9. Slipes past each other.
- 12. Continents slowly side apart over time.
- 13. German Scientist who hypothesis was that all continents were connected as one landmass.
- 14. A device that uses sound waves to measure the distance to an object.
- 16. Breaks in earth’s crust.
- 17. Deep valley.
- 18. Ancient organism that has been preserved.
Down
- 1. Mountain ranges that ran along the ocean floor.
- 2. Process which ocean floor sinks beneath deep ocean trench and back into the mantle.
- 4. Ocean crust bends downward.
- 6. Measure of how much mass there is in a given volume of a substance.
- 7. The flow that transfers heat within a fluid .
- 8. Europe and Asia.
- 10. A layer of hot rock.
- 11. Plate motions and Sea floor spreading.
- 15. Pieces separated by cracks.