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