Polar Weather - video summary questions

1. What is the enemy in polar exploration? Why?
2. How high is the ice on Greenland?
3. How do men cooperate to keep the sea safe for ships?
4. How do ships move through the ice?
5. What kinds of tings are thy looking for and how do they find safe passage through the ice?
6. How have ships imporved since the early days of Polar exploration?
7. Describe sea smoke.
8. How much does the extent of the ea ice change in the winter vs the sumer in the polar regions?
9. How are the ice caps formed?
10. What is the origin of the ice berg?
11. Where is the coldest and windiest place on Earth?
12. Why would you say the early explorers were incredibly brave (or crazy) compared to today's explorer?