Tectonic Plates

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Across
  1. 1. magma inside the earth is called this
  2. 7. the outer core is in this state of matter
  3. 8. the hardest mineral, it can be cut by itself or a laser
  4. 9. when plates push against each other,this happens
  5. 10. a mineral always has the same _____ streak
  6. 12. they measure earthquakes on the _______ scale
  7. 13. the "puzzle pieces" the outside of the earth is made of
  8. 14. rocks are made up of ___ or more minerals
  9. 15. rocks were once igneous or sedimentary rocks
  10. 16. when a plate shifts, this happens
  11. 18. the top layer of the earth
  12. 19. ______ is made of lava that dried quickly
Down
  1. 2. an opening in the plates that can spew lava out of its top
  2. 3. lava inside the earth is called this
  3. 4. this is used to predict earthquakes
  4. 5. the first instrument used to predict earthquakes was invented here
  5. 6. this part of the earth contains the crust and the upper mantle
  6. 10. the center of the earth
  7. 11. continental ___________ is when the plates move away or towards each other
  8. 17. a big meteorite exploded in the sky here