Chapter 15 Test: Glaciers And Erosion Answers

Chapter 15 Test: Glaciers and Erosion
Matching:
1. ________ pyramid-like peak made of arêtes A. snowfield
2. ________the unsorted material left beneath B. snowline the glacier when the ice melts
3. ________depressions where most outwash plains are pitted C. cirque
4. ________theory that most scientists now accept D. kettles
5. ________large cracks E. horn
6. ________masses of ice that occupy millions of square kilometers F. Milanokovitch Theory
7. ________an almost motionless mass of permanent snow and ice G.ground moraine
8. ________elevation above which ice and snow remain throughout H. crevasses the year
9. ________grainy ice I. continental ice sheets
10. ________bowl-shaped depression J. firn
The Great Lakes of North America are the result of a combination of erosion and deposition by continental ice sheets. ¬¬¬¬¬_______
12. When continental ice sheets recede, long ridges of gravel and course sand are absorbed on the way. ________
13. Snow accumulates year after year in polar regions and in the United States. _______
14. A snowline is an almost motionless mass of permanent snow and ice. ________
15. Glacial erosion may produce a bowl-shaped depression know as an esker. ________
16. A kettle is a mound. ______
17. A long period of climatic cooling during which continental sheets cover large areas of the earth’s surface is known as an ice age. ________
18. The composition of the water in a salt lake depends on the solved materials it contains.