Earth's Dynamic Surface
Glaciers and Climate Computer Lab Exercise

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  1. How are glaciers and climate tied to early Viking exploration?

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  2. Define “hot-house.”

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  3. When in Earth's history did hot-houses occur?

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  4. What is the correlation between CO2 in atmosphere and global temperature?

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  5. Define “ice-house.”

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  6. Generally, is the Earth warming or cooling through time?

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  7. Currently, in general, are we in an ice-house or hot-house?

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  8. During the Quaternary, has global temperature fluctuated a little or a lot?

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  9. What does a geomorphologist do?

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  10. Give names of two main ice sheets of North America.

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  11. Name the 4 main glacial deposits of recent Quaternary.

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  12. How do we use ocean sediments to tell about past climates?

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  13. What is a “SMOW?”

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  14. Ocean H2O has mostly what isotope?

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  15. During glacial period, ocean H2O is mostly O18 rich. Why?

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  16. During a glacial period, the mineral used to form shells in oceans is primarily what isotope concentrate?

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  17. Why does the hydrolysis weathering process suck carbon dioxide from the atmosphere?

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  18. What are Milankovitch cycles?

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  19. Define precession.

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  20. Define eccentricity.

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  21. Define obliquity.

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  22. The Earth’s obliquity maximum and minimum are?

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  23. When the Earth is closest to the Sun, this is termed?

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  24. When the Earth is farthest from the Sun, this is termed?

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  25. What is the approximate number of years to repeat precession?

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  26. Name of the North Star today?

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  27. In 11500 years what star will be the North Star?

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  28. What is the correlation (likeness) between the summed curve and the oxygen isotope?

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Click on Deposition on frame 383.
  1. Rock debris deposited by a glacier is termed?

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  2. Snowflakes that turn to ice crystals are termed?

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  3. What is the zone of accumulation?

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  4. What is the zone of ablation?

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  5. What is the snowline?

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  6. An advancing ice front means what about temperatures on the Earth?

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  7. Till under the ice front of a glacier is termed?

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  8. Rock debris pile along the front is termed?

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  9. Describe the sorting of till (poor or well).

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  10. A moraine dammed meltwater lake is termed?

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Click on the numbers on frame 402.
  1. Define a cirque.

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  2. Define a tarn.

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  3. What is a pyramid shaped mountain top surrounded by cirques?

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  4. What is a hanging valley?

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  5. Sharp ridges between two cirques are termed?

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Click on the numbers on frame 404.
  1. Extensional crack in the glacier surface is termed?

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  2. How are eskers formed?

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  3. What type of streams are in outwash regions?

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  4. Define kettle.

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  5. Define kame.

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  6. A whale back shaped debris pile is termed?

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  7. What controls the stability of the ice sheets of Antarctica?

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  8. When were the last continental glaciers in the US?

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  9. This glacial period was called?

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  10. What happens to the US coastline if the West Antarctic ice sheet collapses?

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  11. What is permafrost?

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