Across
- 5. major tectonic plate including much of the continent of eurasia
- 8. the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate
- 11. major tectonic plate including much of south america
- 13. melted rock inside the mantle
- 17. mostly solid bulk of earths interior
- 18. major tectonic plate including much of antarctica
- 20. major tectonic plate including mostly north america
Down
- 1. hypothesis of alfred wegener
- 2. rigid layer of the earth's crust that drifts slowly
- 3. molten or partially molten rock that has been expelled from the interior of the earth
- 4. rupture in the crust of the earth
- 6. shaking of the earth's surface
- 7. major tectonic plate including eastern and largely southern hemospheres
- 9. major tectonic plate including much of africa
- 10. oceanic plate
- 12. underwater mountain range
- 14. the movement that causes hot less dense material to rise and cold denser material to sink
- 15. the amount per unit size
- 16. the last name of the person who first came up with the idea of plate tectonics
- 19. large scale processes affecting the structure of the earth's crust