science crossword

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Across
  1. 1. continents moving
  2. 3. boundary that's convergent
  3. 6. Alfred wegener
  4. 10. second layer before the core of the earth
  5. 12. how material reacts
  6. 13. the arrangement or makeup of parts to form awhole
  7. 14. floor of sea spreading
  8. 17. crust in upper mantle
  9. 18. the layer under the crust
Down
  1. 1. the outer layer of earth
  2. 2. Earth's third atmospheric layer
  3. 4. plates slide past eachother
  4. 5. 2 tectonic plate move apart
  5. 7. move apart
  6. 8. earth's main core
  7. 9. fracture in earth's crust
  8. 11. big plates of land
  9. 15. squeezing
  10. 16. mechanically weak earth upper mantle