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PCC BIO 100IN - Extreme Ice Water in 3 forms

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Extreme Ice Unit 2 characteristics of water Instructor Deborah Bird Extreme Ice Water in 3 forms 30 points For the web enhanced class go to the following website and answer the following questions PBS extreme ice http://www.pbs.org/wgbh/nova/extremeice/program.html Name _____________________ 1. What is the cryosphere? 2. What is unique about the experience the photographer is having? 3. Describe Balog’s experiment.Extreme Ice Unit 2 characteristics of water Instructor Deborah Bird 4. What was the primary cause of shifts in the cryosphere before the Industrial Revolution? 5. What is a glacier? 6. What is the average temperature rise in Alaska when this documentary was made? 7. In what year did the Columbia ice field begin to shrink? 8. Why is some of the glacier dirty looking? 9. What instruments are being used to measure glacier movement. 10. How far has the Columbia retreated over the last 30 years? 11. What variable is seismic equipment being used to measure? 12. What color is the ice from the bottom of an iceberg? 13. How can you tell “dead Ice”?Extreme Ice Unit 2 characteristics of water Instructor Deborah Bird 14. What fraction of the world’s population depends upon mountain glacier melt for fresh water? 15. If Greenland and Antarctica completely melted what is the prediction for sea level rise? 16. What was the assumption of scientists abut large ice sheets before the break off of Larsen B? 17. What are the dimensions of the Greenland ice sheet? 18. What are moulans? 19. What do the visible layers in the ice represent? 20. What is the relationship between carbon dioxide concentrations and temperature? 21. In what year did we begin to see large changes in the Greenland ice sheet? 22. What % of an iceberg is underwater?Extreme Ice Unit 2 characteristics of water Instructor Deborah Bird 23. How often can you observe a glacier from satellite? 24. How much longer is the melt season now in Greenland? 25. What two features are becoming normal on the Greenland ice sheet? 26. What is the lubricating affect? 27. What other force is speeding up the melting? 28. How would a 3 foot rise in sea level affect humans? 29. What is the current geologic age? (it just changed very recently) 30. Would you call the cryosphere normal or skewed at this point in time? Anthropocene http://www.msnbc.msn.com/id/5831910/Extreme Ice Unit 2 characteristics of water Instructor Deborah Bird PBS extreme ice http://www.pbs.org/wgbh/nova/extremeice/program.html


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