Plate Tectonic Unit

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Across
  1. 4. a theory of explaining the earth crust
  2. 5. region between the crust and core
  3. 6. an elastic wave in the earth produced by an earthquake or other means
  4. 7. admission of energy in the form of electromagnetic waves
  5. 10. a current in a fluid causing convection
  6. 11. upper part of earths mantle
  7. 12. solid and inside the otter core
  8. 15. where heat and electricity is transmitted through an object
  9. 17. the gradual movement of continents across earth
  10. 18. movement in liquid when hotter liquid rises and colder sinks and causes the transfer of heat
  11. 20. when two plates move away from each other
Down
  1. 1. two plates sliding past one another
  2. 2. dark, fine-grained volcanic rock
  3. 3. rigid outer part of earth
  4. 8. a very hard, granular, crystalline, igneous rock consisting mainly of quartz, mica, and feldspar
  5. 9. theory an explanation gotten from the scientific method
  6. 10. when two plates collide
  7. 13. the sideways and downward movement of the edge of plates on earth's crust
  8. 14. composed thickly of nickel and iron and is liquid
  9. 16. degree of compactness in a substance
  10. 19. Outer most layer of the earth