Across
- 3. fresh water reptile found in Antarctica and South America
- 4. the process of ocean floor sinking beneath a deep-ocean trench and back into the mantle
- 7. the outermost layer of ther Earth
- 10. no crust is created or destroyed at this type of boundary
- 13. undersea mountian chain where new ocean floor is produced
- 15. the middle layer of out Earth
- 16. the flow that transfers heat within a fluid
- 17. upper part of the mantle
- 18. one component of the outer core
- 20. part of the mantle that bends like plastic
Down
- 1. the innermost layer of the Earth
- 2. the supercontinent that connected all the continents
- 5. the kind of crust that is found under the ocean
- 6. scientist that realized the continents fit together like puzzle pieces
- 8. type of convergent boundary that forms mountians
- 9. rocks on the continents have been found to be ___________ years old
- 11. fresh water reptile found in Africa, Antarctica, and India
- 12. the oceanis crust bends downward and sinks back into the mantle
- 14. the plates that move together
- 19. the device the maps the ocean floor