Our Weather & Water Unit 7 Vocabulary Review

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Across
  1. 3. vehicle too small for people, used for exploring deeper than a submersible
  2. 6. relatively flat area of the sea floor
  3. 12. reef growing in a circle formation, usually around a volcanic island
  4. 15. water from 0 to 660 feet below the surface; also known as the sunlit zone
  5. 16. water from 3,300 to 13,200 feet below the surface; also known as the midnight zone
  6. 19. mini-submarine for exploring deep in the ocean
  7. 20. steep drop off from continental shelf to sea floor
  8. 21. reef that grows from the land into the ocean
  9. 22. idea that the rate at which things happen today has been constant throughout history
Down
  1. 1. underwater mountain
  2. 2. water from 660 to 3,300 feet below the surface; also known as the twilight zone
  3. 4. water more than 13,200 feet below surface
  4. 5. living animals able to glow in the dark
  5. 7. shallow area of land sloping away from the continents
  6. 8. use of sound waves to measure distances in water
  7. 9. flat topped underwater mountain
  8. 10. reef forming a barrier between the ocean and land
  9. 11. scientist who studies the ocean
  10. 13. island formed by the collective growth of coral polyps
  11. 14. undersea explorer
  12. 17. deep valley in the sea floor
  13. 18. another name for echo sounding