Earth Science Crossword

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Across
  1. 3. Where two plates pull apart at a divergent boundary, thinning the crust
  2. 7. When tectonic plates rub side to side against each other
  3. 8. A long, narrow depression on the ocean floor where subduction occurs
  4. 9. A massive supercontinent
  5. 10. A crack in the Earth's surface
Down
  1. 1. When tectonic plates move away from each other
  2. 2. The tectonic plates under the ocean
  3. 4. The tectonic plates on the Earth's surface
  4. 5. When tectonic plates collide into each other
  5. 6. Denser tectonic plates sinks below a less dense plate at a convergent boundary