Across
- 4. when the continents move away from each other
- 6. the mechanical property below the lithosphere lower mantle
- 8. when a trench is formed and volcanos
- 13. when plates pull away from each other
- 16. the center of the earth 33%
- 17. the theory that Alfred Wegner first thought of but nobody believed him
- 18. lithosphere asthenosphere and mesosphere
- 19. when 2 plates are colliding side by side
- 20. the innermost layer of the earths mechanical layer
Down
- 1. when 2 plates are pushing on each other causing mountains
- 2. the layer of the earth that is solid due to pressure
- 3. the thickest layer of the earth 66%
- 5. an example of this is the san andreas ______ which is a transform boundary
- 7. this happens at the mid Atlantic ridge when new seafloor is made
- 9. the part of the earth that is made of liquid
- 10. when to plates collide
- 11. the thinnest layer of the earth 1%
- 12. the earth is _______ up of many things
- 14. the outermost mechanical property
- 15. they move about 2cm per year