Across
- 3. the onset of an ice age is related to the ______ cycles - this included eccentricity, obliquity, and precession
- 5. material transported by a glacier and then deposited. many types of moraines
- 6. a glacial lake produced by scouring. these are often found in cirques
- 8. u-shaped _____. glaciers carve valleys into a u shape.
- 10. ________ minimum. a period roughly spanning 1645 to 1715 when sunspots became exceedingly rare, as noted by solar observers of the time
- 12. __________ glaciers. a giant ice sheet that spread our from a center of accumulation
- 13. a sharp peak on a mountain cut by glaciers
- 14. ________. a giant piece of freshwater ice that broke off of a glacier or ice shelf.
- 16. a steep-sided carve into a mountain by a glacier
- 17. glaciers form when more snow and ice accumulate than melt. it takes many years and the snowfall _______ into ice.
- 20. glacial ______. a piece of rock carried by glacial ice some distance from the rock outcrop from which it came
- 21. ______ lake. a depression filled with water left by a glacier
Down
- 1. glacial striations. multiple, straight ______ lines which represent the movement of the sediment loaded base of a glacier
- 2. a cold period marked by episodes of extensive glaciation alternating with episodes of relative warmth
- 4. formed glacial till (sediment). they are elongated features that can reach a kilometer or more in length
- 7. material deposited by the debris-laden glacial valley
- 9. glaciers form when more snow and ice ______ than melt. it takes many years and the snowfall compacts into ice
- 11. u-shaped valley near the sea
- 15. a moving mass of snow and ice that moves downhill
- 18. _______ glaciers: a glacier that starts in a mountain and into a valley
- 19. a narrow, steep-sided ridge of sediment, the remains of sediment piling up in winding river under the glacier.