Across
- 5. The second layer of the earth
- 6. The number of large tectonic plates
- 7. The stronger lower part of the mantle
- 8. These can be formed at convergent boundaries where one continental plate rises over another
- 11. Part of the earth that contains both the crust and the upper mantle
- 12. Theory that there are large peices of the crust that move slowly over time causing continents to drift
- 13. This feature is found in the ocean at convergent plate boundaries, where deep sections are present
- 16. This forms at convergent boundaries as a result of magma rising up under the service
- 20. The first major type of evidence that supports continental drift
- 22. Continental plates move 1 to 10 ________________________ every year
- 24. One of the supercontinents that existed 250 million years ago
- 26. The denser of the two types of crust
- 27. The age of magnetic bands that are the furthest to the rift valley
- 28. The part of the core that is the hottest but also solid
Down
- 1. Happens when oceanic crust is pulled under continental crust as it is destroyed in the mantle
- 2. The type of plate boundary where two plates collide causing the denser crust to be melted back into the mantle
- 3. The top taffy like part of the mantle
- 4. The top layer of the earth
- 7. These are underwater mountain ranges
- 9. The part of the core that is liquid
- 10. The consistency of the mantle
- 14. The thickest type of the two types of crust
- 15. The last name of the scientist that came up with the idea of continental drift
- 17. This forms at divergent boundaries right at where the plates separate at
- 18. The age of magnetic bands that are closest to the rift valley
- 19. The type of currents of that are present in the mantle
- 21. One of the supercontinents that existed 300 million years ago
- 23. These are where earthquakes occur as tectonic plates slip pass each other
- 25. The type of plate boundary where two plates move apart from each, allowing for new crust to be formed