The Ocean Floor

123456789101112131415161718
Across
  1. 1. slope, the slope between the outer edge of the continental shelf and the deep ocean floor
  2. 4. shelf, the area of seabed around a large landmass where the sea is relatively shallow compared with the open ocean
  3. 5. Gravel, the offshore sand -and –gravel industry is second in economic value only to the off shore oil industry
  4. 6. Hydrates, occur beneath permafrost areas on land and under the ocean floor at depths below 525 meters
  5. 7. rise, a major depositional regime in oceans made up of thick sequences of continental material that accumulate between the continental slope and the ocean bed.
  6. 9. biological in origin they consist of shells and skeletons of marine animals and algae
  7. 12. study the topography of the ocean floor have divided the floor regions are?
  8. 14. an underwater volcano with a flat top
  9. 16. ocean trench, deep, steep-sided canyon in the ocean floor
  10. 17. consist primarily of mineral grains that were eroded from continental rocks and transported to the ocean
  11. 18. science that draws methods and knowledge of geology chemistry physics and biology​
Down
  1. 1. margins, the ocean basin floor, and the mid ocean ridge
  2. 2. Nearly 71% of Earth's surface covered
  3. 3. measuring the shape of the ocean surface from space is another technological breakthrough
  4. 5. acronym for sound navigation and ranging
  5. 8. floor sediments, can be classified according to their origin into three broad categories: terrigenous sediments, isogenous sediments, and hydrogenous sediments.
  6. 10. is a small underwater craft used for deep sea research
  7. 11. an underwater mountain
  8. 13. consists of minerals that crystallize directly from ocean water through various chemical reaction
  9. 15. plate boundaries, formed at mid-ocean ridges