TECTONIC PLATE BOUNDARIES

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Across
  1. 4. release of energy then earth's plates rub or scrape against each other
  2. 8. layer in the earth's mantle where tectonic plates slide over.
  3. 9. liquid rock
  4. 11. boundaries, where most volcanoes and earthquakes occur
Down
  1. 1. supercontinent that existed million of years ago.
  2. 2. boundaries form new ocean crust.
  3. 3. boundaries, earth's plates slide past each other.
  4. 5. current, force responsible for the movement of tectonic plates.
  5. 6. made of the crust and the top of the mantle.
  6. 7. developed the continental drift hypothesis.
  7. 10. when one tectonic plate sinks below another