The Techtonic Plates

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Across
  1. 1. the person who created the pangea theory
  2. 4. spreading- when the plate boundary splits apart, causing new seafloor
  3. 5. the crust below the ocean
  4. 10. when all the continents separated
  5. 14. ridge an underwater mountain chain
  6. 15. where heat rises and cold air descends
  7. 17. when one plate boundary slides under another
  8. 18. convergent boundaries slide together causing a __________
  9. 19. the upper mantle and crust
Down
  1. 2. a ring of volcanos
  2. 3. the crust that makes up the land
  3. 6. where 2 plate boundaries separate and a fault is formed
  4. 7. when two plate boundaries slide against each other and cause an earthquake
  5. 8. the boundary between two tectonic plates
  6. 9. lots of earthquakes happen here
  7. 11. the solid\liquid stuff that the outer core is made of
  8. 12. the theory that all continents drifted apart
  9. 13. when two plate boundaries slide together and form mountains
  10. 16. the remains of an animal that was alive millions of years ago