Plate Tectonic Crossword Puzzle

1234567891011121314151617181920
Across
  1. 1. The outside of something.
  2. 4. It was also called the "super continent".
  3. 5. The study of materials to establish facts and reach new conclusions.
  4. 6. A theory explaining the structure of the earth's crust
  5. 11. Ridge General term for an underwater mountain system, consisting of various mountain chains.
  6. 14. The ocean on the East of the United States.
  7. 16. To watch carefully and attentively.
  8. 17. There are 2 of these on different sides of the U.S.
  9. 18. The solid, outermost layer of the Earth, lying above the mantle.
  10. 19. This man wrote the book "The Origin of Continents and Oceans."
Down
  1. 2. The remains of prehistoric organisms.
  2. 3. An educated guess based on observation.
  3. 7. The upper layer of the earth's mantle, but is below the lithosphere
  4. 8. Machinery and equipment developed from such scientific knowledge.
  5. 9. There are 7 of these.
  6. 10. A person who studies the physical or natural sciences.
  7. 12. Available facts indicating whether a belief is true or false.
  8. 13. Record in detail the spatial distribution of something.
  9. 15. Summarizes a hypothesis that has been supported by many tests.
  10. 20. The planet we live on.