Across
- 4. What science combines oceanography and marine biology?
- 7. Who was the first to circumnavigate the globe?
- 9. Which explorer mapped many unknown islands in three voyages?
- 10. What technology did the Chinese invent around 1125 for seafaring?
- 13. What diving apparatus allows underwater breathing?
- 16. Which ocean did the Vikings explore during the Middle Ages?
- 17. Which ancient Greek used the North Star for latitude?
- 20. Which country's expedition confirmed Antarctica as a continent?
- 23. What era is known for a lack of scientific advancement in Europe?
- 24. Who calculated the Earth's circumference?
- 26. What theory did Charles Darwin develop?
Down
- 1. Which civilization was known for building ships with central rudders and watertight compartments?
- 2. Which ancient people established the first Mediterranean trade routes?
- 3. What technology is used for underwater sound detection?
- 5. Who improved the latitude/longitude system?
- 6. What coordinate measures east-west position?
- 8. Which ancient civilization first used canoes made from tree trunks?
- 11. Which civilization made a sea voyage around 3200 B.C.?
- 12. What coordinate measures north-south position?
- 14. Which civilization was active in the Indian Ocean during the Middle Ages?
- 15. What navigational tool used by Polynesians represented ocean directions?
- 18. What underwater lab is in the Florida Keys?
- 19. Who developed the first world map in 150 A.D.?
- 21. Which naturalist sailed on the H.M.S. Beagle?
- 22. What did ancient Greeks use to develop seafaring maps?
- 25. Who was a famous marine biologist known for discovering sea floor organisms?