CONTENTS 



No. Question Page 



1 . What is the greatest depth of the ocean and where is it?. . . 1 



2. Why is the ocean blue? 2 



3. Where do waves come from? 3 



4. What is the rate of sediment deposition on the sea floor?. . 4 



5. How thick is the ice in the Arctic Ocean? 5 



6. If all the ice in the world should melt, what would 

 happen? 6 



7. What causes the red tide? 7 



8. What makes the ocean salty? 8 



9. Is there gold or other precious elements in the ocean? If 



so, how much? 9 



10. What is the difference between a sea and an ocean? 10 



1 1 . How deep has a skin diver gone? 11 



12. Can a "hard hat" diver go deeper than a skin diver? 12 



13. How deep has man gone in the ocean? 13 



14. What is the source of the Gulf Stream? 14 



15. How long (and big) is the Gulf Stream? 15 



16. What is a waterspout and what causes it? 16 



17. What do oysters and clams eat? 17 



18. What commercial products other than fish are obtained 



from the sea? 18 



19. What is the annual fish take by the United States? 19 



20. How does the fish take of the United States compare with 

 other countries? 20 



21. What are the primary pollutants found in the sea and what 



are their sources? 21 



22. What is Atlantis? 22 



23. What does the sea floor look like? 23 



24. Are there strong currents at depths beneath the ocean 

 surface that might compare to the "jet stream" in the 

 upper levels of the atmosphere? 24 



25. Why does the sea foam? 25 



26. How did seas, such as the Black, Red, and White, get their 

 names? 26 



27. What causes hurricanes and how do they differ from 

 typhoons? 27 



28. How high is the highest wave? 29 



29. How many species of fishes are there? 30 



30. Beside the whale, what other mammals live in the oceans? 31 



VII 



