Plate Tectonics Crossword

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Across
  1. 3. the innermost layer of Earth
  2. 5. energy transfer by the movement of a material
  3. 8. a scientific hypothesis stating that the landmasses on earth were once a solid piece but drifted apart
  4. 10. a measurement of how much material is in a volume
  5. 12. the period in which all the continents were joined together to form a supercontinent
  6. 13. plate boundary in which tectonic plates move toward each other
  7. 14. the time period in between the Triassic and Cretatious period
  8. 15. one of the two continents in the Triassic period; consists of today's North America and Asia
  9. 16. plate boundary in which the plates are moving away from each other
  10. 18. lower layer of the mantle; material bends and moves easily
  11. 22. plate boundary in which plates slide past each other
Down
  1. 1. the supercontinent that consisted of all the continents put together like a jigsaw puzzle
  2. 2. huge underwater mountains at the edges of tectonic plates
  3. 4. one of the two continents in the Triassic period; consists of todays South America, Africa, India, Australia, and Antarctica
  4. 6. a switch in Earth's magnetic north and south
  5. 7. the top layer of the mantle and the crust
  6. 9. layer of earth in between the innermost layer and the lower mantle
  7. 11. molten rock that is below the Earth's surface
  8. 17. substance that the innermost layer of Earth is mostly made of
  9. 19. when one tectonic plate slides beneath another plate
  10. 20. a place where heated rock rises in the middle of a tectonic plate
  11. 21. the outermost layer of Earth