The Ocean Floor

12345678910111213
Across
  1. 3. huge underwater mountains; volcanoes that form in the same way as volcanoes on land
  2. 4. the study of the physical features of the ocean floor
  3. 6. a man-made ship that lies on the ocean floor
  4. 7. volcanoes whose summit rises above seal level
  5. 8. leads from the continental shelf towards the sea floor; deeper than the continental shelf
  6. 11. occur at divergent plate boundaries; a huge mountain range of underwater volcanoes that rise above the sea floor
  7. 12. hot springs; form when seawater trickles down into newly formed ocean crust
  8. 13. a trench that is known as the deepest place on Earth
Down
  1. 1. a steep-sided valley cut into the seabed of the continental slope; it ends in a sediment buildup
  2. 2. the underwater edge of the continent
  3. 5. a buildup of sediment and sand on the ocean floor at the bottom of the continental slope
  4. 9. a V-shaped valley that is long and narrow; deepest point on Earth
  5. 10. strings if volcanic islands formed when plates converge