Name _______________________________________ Date _____________________ Period ___________
17.1 Glaciers: Moving Ice
Definitions: Define the following terms IN COMPLETE SENTENCES.
1. glaciers:
2. alpine glacier:
3. continental glacier:
4. basal slip:
5. internal plastic flow:
Answer the following questions IN COMPLETE SENTENCES, where appropriate.
6. The size of a glacier depends on what two factors?
7. Why are alpine glaciers confined to small areas?
8. Another name for a continental glacier is a(n) __________ ___________________.
9. What causes glaciers to flow downward?
10. What two processes move glaciers?
11. A glacier that moves by basal slip can work its way over small barriers by _________________ and
_______________________.
12. Why do the edges of a glacier move more slowly than its center?
_________ 13. ice shelf
a. large block of ice that breaks from an ice shelf
_________ 14. iceberg
b. part of an ice sheet that moves out over the ocean
15. In which direction do continental glaciers move?
16. Why do icebergs pose a hazard for ships?
Name _______________________________________ Date _____________________ Period ___________
17.2 Glacial Erosion and Deposition
Definitions: Define the following terms IN COMPLETE SENTENCES.
1. cirque:
2. erratic:
3. glacial drift:
4. till:
Answer the following questions IN COMPLETE SENTENCES, where appropriate.
5. Glaciers create landforms through which two processes?
6. Why are landforms that result from glacial action different from those formed by rivers?
7. ___________________ erosion is the only way by which _____-shaped valleys form.
8. How do landforms created by alpine glaciers differ from landforms created by continental glaciers?
9. Deposition occurs when a glacier __________________.
10. Under what conditions will a glacier melt?
_________ 11. glacial drift
a. unsorted glacial sediments that have been deposited
_________ 12. till
b. long, tear-shaped mounds of till
_________ 13. drumlins
c. term used to describe all glacial sediments
14. Landforms that result when a glacier deposits will are called ____________________.
15. Why does glacial melt water sometimes have beautiful colors?
16. Lake basins commonly form where glaciers erode surfaces and leave depressions in the _______________.