Ice Age à Glaciers Name __________________ Date _________ Period ________ http://gemini.oscs.montana.edu/~geol445/hyperglac/eroproc1/
http://www2.nature.nps.gov/geology/parks/icag/ Directions: use these websites to answer the following questions. You may use other websites as a supplement if you choose. 1. Explain how glaciers work like an excavator. Be sure to include how it behaves like a blade, backhoe, and a ripper. 2. Describe Rock Failure and how it applies to glaciers. Also include how glaciers can cause this to occur. 3. What are the four major periods of glacial advances? Why are they named this? 4. Define the following terms: drumlins, kames, eskers, kettles, moraines
Ice Age à Glaciers Name __________________ Date _________ 5. How are the huge lakes formed by glaciers, presumably? Period ________ 6. How much of all freshwater lies locked in the Antarctic ice sheet, which is, at its thickest, more than 4 kilometers (2.5 miles) deep. Is this a good or a bad thing in your opinion? What are some potential positives and negatives of this situation? 7. Go to the section entitled Continental Glaciation. Record in your own words how glaciers form, how thick the ice sheet was, and how much our annual temperature must change in order for this to happen again. 8. Based on your knowledge of the animal life of the last ice age, and on the information you looked up today, how do you think glaciers would affect animal and plant life in the areas they invaded. Also, is it possible for an area to return to its previous form after the glaciers retreat?