Review Questions 1. Who was Benjamin Franklin? 2. Who was Alfred Wegener? 3. What is the Nansen bottle used for? 4. What causes deep sea vents? 5. Describe the early trade route from Europe to North America. 6. How did they first plot the Gulf Stream? 7. How do they map currents now? 8. In what direction does the Earth turn? 9. Is the time in England earlier or later than ours? 10. Why is the Labrador Current cold? 11. What is the name of the current that flows north past the coast of Europe? 12. What four regions make up an ocean profile? 13. What kind of organisms live near deep sea vents? 14. Where is the center for bathymetric mapping located? 15. Where is 0 degrees latitude? 16. What does a sextant measure? 17. Describe nitrogen narcosis. 18. What causes the bends? 19. How does a wet suit protect a diver from cold ocean water? 20. What is the purpose of a buoyancy compensator?