Oceans

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Across
  1. 4. A gently sloping, shallow area that extends outward from the edge of a continent
  2. 7. The steep edge of a continental shelf
  3. 9. The temperature and salt content of water
  4. 10. A long deep valley on the ocean floor which old ocean floor sinks back toward the mantel
Down
  1. 1. An undersea mountain chain where new ocean floor is produced; a divergent plate boundary under the ocean
  2. 2. A broad area covered with thick areas of mud and salt
  3. 3. Island formed by volcanic eruptions on the ocean floor
  4. 5. The movement of fluid
  5. 6. The regular rise and fall of ocean levels and are affected by gravity
  6. 8. A volcanic mountain that rises from the ocean floor but doesn't reach the surface