Plate Tectonic Crossword Puzzle

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