Tectonic plates

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Across
  1. 2. Collide
  2. 5. formed by divergent boundaries
  3. 7. lie under surface land
  4. 8. Slide with each other
Down
  1. 1. occurs at a convergent boundary
  2. 3. supercontinent
  3. 4. Where earthquakes usually occur
  4. 6. separate