Across
- 1. continents moving
- 3. boundary that's convergent
- 6. Alfred wegener
- 10. second layer before the core of the earth
- 12. how material reacts
- 13. the arrangement or makeup of parts to form awhole
- 14. floor of sea spreading
- 17. crust in upper mantle
- 18. the layer under the crust
Down
- 1. the outer layer of earth
- 2. Earth's third atmospheric layer
- 4. plates slide past eachother
- 5. 2 tectonic plate move apart
- 7. move apart
- 8. earth's main core
- 9. fracture in earth's crust
- 11. big plates of land
- 15. squeezing
- 16. mechanically weak earth upper mantle