Plate Tectonics

5. continent that includes brazil
7. occurs as tectonic plates are pushed together and the crust becomes shorter and thicker
8. where two plates move away from each other
9. continent under eurasia
11. continent that includes australia and surrounding ocean
12. when two plates slide past each other
15. continent that includes canada and america
16. continental made up of europe and asia
17. continent farthest north
19. the outer shell on the earth
20. the rigid outer part of the earth, consisting of the crust and upper mantle

1. natural disaster that shakes the ground
2. plate in the pacific ocean
3. the gradual movement of the continents across the earth's surface through time.
4. hot, dense, center of our planet
6. when plates move towards each other and collide
10. energy waves travelling out from an earthquake
13. earth's layer made out of solid rock
14. large-scale processes affecting the structure of the earth's crust.
18. long, narrow depressions on the seafloor that form at the boundary of tectonic plates