Plate Tectonics

123456789101112131415161718
Across
  1. 3. solid outer layer of earth made of crust and upper part of mantle
  2. 6. single, large ocean that covered earth's surface
  3. 8. sudden movement of earth's surface
  4. 10. study of alignment of magnetic minerals in rocks
  5. 11. boundary where 2 plates are sliding past each other
  6. 12. boundary where 2 tectonic plate are moving toward each other
  7. 14. molten rock in earth's surface
  8. 15. movement of heated material due to differences in density (different temperatures)
  9. 17. supercontinent that formed 300 million years ago
  10. 18. boundary where 2 tectonic plates are moving away from earth other
Down
  1. 1. piece of lithosphere with unique geologic features
  2. 2. single landmass that broke up to form continents
  3. 4. process where oceanic seafloor forms when magma rises pushing older seafloor away
  4. 5. breaking apart of earth's surface
  5. 7. theory explaining how lithosphere moves and changes shape
  6. 9. solid plastic part of the mantle
  7. 13. undersea mountain chain with steep narrow valley
  8. 16. can form when magma erupts onto earth's surface