Earth Science

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Across
  1. 2. melted rock from the mantle
  2. 3. narrow deep ocean floor
  3. 5. underwater mountain range
  4. 6. zone where one plate moves under another plate
  5. 7. level ocean floor
  6. 9. plastic layer in the upper mantle
  7. 15. rigid layer composed of rust and upper mantle
  8. 16. plate boundary in which the plates move horizontally along the boundary
  9. 17. the edge of a plate
  10. 19. solid center of the earth
  11. 20. hot, deformable layer of the earth
  12. 21. plate boundary in which the plates move toward each other
  13. 22. continental margin far from a plate boundary
Down
  1. 1. The earth's lithosphere is composed of 8 large (and many small) _____.
  2. 4. shallow seafloor surrounding continents
  3. 8. plate boundary in which the plates move away from each other
  4. 10. plume of rising magma not on a plate boundary
  5. 11. molten inner layer of the earth
  6. 12. weather patterns of the ancient past
  7. 13. solid outer layer of the earth
  8. 14. Meteorologist who first proposed continental drift theory
  9. 18. continental margin on a plate boundary