week 5

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Across
  1. 4. The way a person behaves.
  2. 5. the echoes.
  3. 7. An original version or blueprint.
  4. 9. plate boundary.
  5. 10. floor spreading The process by which molten material adds new crust
  6. 11. ocean ridge An undersea chain of mountains that is part of a long
  7. 12. of underwater mountains.
  8. 13. The process by which crust sinks back into the mantle at a
Down
  1. 1. Apartment housing that is overcrowded and not well taken care
  2. 2. Earth’s bodies of water.
  3. 3. A force that sends an object forward.
  4. 6. A device that reflects sound waves off underwater objects and
  5. 8. An aggressive young man that is usually a trouble maker.
  6. 14. A deep undersea valley where crust sinks towards the mantle.