Tectonic Plate Boundaries

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Across
  1. 4. hot fluid or semifluid under the earth's crust
  2. 5. two plates moving away from one another
  3. 7. scientist had the theory of continental drift
  4. 10. a line on a rock surface
  5. 11. formed by solidification and deposition of sediments
  6. 13. violent shaking of the ground
  7. 15. outermost layer of the planet
  8. 17. contains most of earth's mass
  9. 19. remains of prehistoric organisms
  10. 20. formed new rocks caused by extreme pressure
Down
  1. 1. hot molten rock erupted from a volcano
  2. 2. formed by cooling and solidification of magma
  3. 3. two plates move toward one another then collide
  4. 6. tall mountain with a lot of pressure that shoots out lava
  5. 8. technical name for crust and mantle
  6. 9. piece of crust that floats in the mantle
  7. 12. places where the seafloor spreading takes place
  8. 14. made of iron with small amount of iron
  9. 16. two plates slide against each other
  10. 18. long and high sea waves caused by earthquakes