9/11 Flashcards Made by: Rebecca A. Kinnunen

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