Chapter 17 Crossword

5. / a large mass of moving ice
6. / a sharp, jagged ridge that forms between cirques
7. age / a long period of climatic cooling during which the continents are glaciated repeatedly
9. / a deep and steep bowl-like depression produced by glacial erosion
10. / in a glacier, a large crack or fissure that results from ice movement
12. / a massive sheet of ice that may cover millions of square kilometers, that may be thousands of meters thick, and that is not confined by surrounding topography
13. / a long, narrow, steep-sided ridge of coarse sand and gravel deposited by a stream flowing in or under a melting sheet of glacial ice
14. / rock material carried and deposited by glaciers
16. theory / the theory that cyclical changes in Earth's orbit and in the tilt of Earth's axis occur over thousands of years and cause climatic changes
17. / a sharp, pyramid-like peak that forms because of the erosion of cirques

1. / a narrow, wedge-shaped mass of ice that forms in a mountainous region that is confined to a small area by surrounding topography
2. / a depression in a glacial out-wash drift made by the melting of a detached mass of glacial ice
3. / the process by which glaciers flow slowly as grains of ice deform under pressure and slide over each other
4. / a mass of rocks and sediment carried down and deposited by a glacier, typically as ridges at its edges or extremity
8. / a large rock transported from a distant source by a glacier
11. / unsorted rock material that is deposited directly by a melting glacier
15. / the process that causes the ice at the base of a glacier to melt and the glacier to slide