Across
- 2. fault boundaries strike-slip boundary
- 3. boundaries zones three dimensional surface
- 4. plates covering most of North America
- 8. downward movement of the edge of a plate
- 9. drift gradual movement of the continents
- 10. rigid outer part of the earth
- 12. American plates lies beneath the pacific ocean
- 13. includes west of the continent of Eurasia
- 14. plates a major tectonic division of the earth's crust
- 15. to pull apart
Down
- 1. boundaries where lithosphere collides
- 2. affecting the structure of the earth's crust
- 5. American plates a major tectonic plate
- 6. upper layer of the earth's mantle
- 7. plates dramatic change in the form
- 11. plates forming a continent