tectonic plates

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Across
  1. 1. lava under ground
  2. 4. happens at a convergent boundary
  3. 8. at this boundary,plates move away from each other
  4. 10. zone at convergent boundaries
Down
  1. 2. also forms at divergent boundaries
  2. 3. boundary where plates move toward each other and collide
  3. 5. underground
  4. 6. boundary where plates slide past each other
  5. 7. when a convergent plate is more dense than the other
  6. 9. happens at a divergent boundary