Plate tectonics crossword

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Across
  1. 4. - the lithosphere is divided into...
  2. 9. - South America matches up with this continent.
  3. 11. - result of plate tectonics
  4. 15. - this piece of evidence explains why palm tree fossils have been found in very cold regions
  5. 16. - the Earth is made up of these and they are constantly moving along above the mantle.
  6. 17. - the Earth's crust is divided into plates that shift over time.
  7. 19. - the layer of Earth which is believed to be responsible for plate movement
  8. 20. - continents fit together like_______ pieces
Down
  1. 1. - when two plates move away from each other
  2. 2. - the outer most layer of earth
  3. 3. - the super continent was called
  4. 5. - the scientist who is generally credited with the continental drift theory
  5. 6. - an idea developed in the 20th century
  6. 7. - what is the liquid layer of Earth's core.
  7. 8. - what element makes up most of the Earth's core
  8. 10. - evidence of dead plants and animals
  9. 12. - type of boundary between two colliding plates
  10. 13. - result of plate tectonics
  11. 14. - scrapes across rocks where a glacier once was
  12. 18. -currents are found in the mantle and cause the tectonic plates to move