ESC 1000 Earth Science Name:___________________

Chapter 6: Glacier, Deserts, and Wind

Part K Chapter 6 Key Terms 53 Points

Fill in the blanks with the word or words that best fit the definition

1. _______________ – A general term for the loss of ice and snow from a glacier.

2. _______________- The grinding and scraping of a rock surface by the friction and inpact of rock particles carried by water, wind, or ice.

3. _______________ - Unconsolidated sediment deposited by a stream.

4. _______________- A glacier confined to a mountain valley, which in most instance has previously been a stream valley.

5. _______________ - A narrow knife like ridge separating two adjacent glaciated valleys.

6. _______________- A solitary sand dune shaped like a crescent with its tips pointing downward.

7. _______________ - Dunes forming scalloped rows of sand oriented at the right angle to the wind. This form is immediate between isolated barchans and extensive waves of transverse dune.

8. _______________- A depression excavated by the wind in easily eroded deposits.

9. _______________- An amphitheater-shaped basin at the head of a glaciated valley produced by frost wedging and plucking.

10. _______________ - A deep crack in the brittle surface of a glacier.

11. _______________- sloping layers of sand forming layers inclined in the direction the wind is blowing.

12. _______________ - The lifting or removal of loose material by wind.

13. _______________- A layer of coarse pebbles and gravel created when wind removed the finer material.

14. _______________- A streamline asymmetrical hill compose of glacial till. The steep side of the hill faces the direction from which the ice advanced.

15. _______________- A rigid of till marking a former position of the from of a glacier.

16. _______________– A stream that is usually dry because it carries water only in response to specific episodes of rainfall. Most desert streams are of this type.

17. _______________ - Sinuous rigid composed largely of sand and gravel deposited by a stream flowing in a tunnel beneath a glacier near its terminus.

18. _______________ - A steep-sided inlet of the sea formed when a glacial trough was partially submerged

19. _______________ - An all-embracing term for sediments of glacial origin, no matter how, where, or in what shape they where deposited.

20. _______________ - An ice transported boulder the was not derived from bedrock near its present site.

21. _______________- A mountain valley that has been widened, deepened, and straightened by a glacier.

22. _______________– scratches and grooves on bedrock caused by glacial abrasion

23. _______________- A thick mass of ice originating on land from the compaction and recrystalization of snow that shows evidence of past or present flow.

24. _______________ - A undulating layer of till deposited as the ice front retreats.

25. _______________- A tributary valley that enters a glacial trough at a considerable height above its floor.

26. _______________- A pyramid –like peak formed by glacial action in three or more cirques surrounding a mountain summit.

27. _______________ - A mass of glacial ice covering a high upland of plateau and spreading out rapidly.

28. _______________- A very large, thick mass of glacial ice flowing outward in all directions from one or more accumulation centers.

29. _______________– it is a large , relatively flat mass of floating ice that extends seaward from the coast but remain attached to the land along one of the shores

30. _______________- A discontinuous pattern of intermittent streams that do not flows to the ocean.

31. _______________ - A steep-sided hill composed of sand and gravel originating when sediment is collected in openings in stagnant glacial ice.

32. _______________– depressions crated when blocks of ice become lodged in glacial deposits and subsequently melted.

33. _______________- A ridge of till along the side of an alpine glacier composed primarily of debris that fell to the glacier from the valley walls.

34. _______________- Deposits of windblown silt, lacking visible layer generally buff-colored, and capable of maintaining a nearly vertical cliff.

35. _______________ - Long ridges of sand oriented parallel to the prevailing wind; these dunes from where sand supplies are limited.

36. _______________- A ridge of till formed when lateral moraines from two coalescing alpine glaciers join.

37. _______________- A relatively flat, gently sloping plain consisting of materials deposited by meltwater stream in from of the margin of an ice sheet.

38. _______________ - The shape of these dunes resembles brachans, expect their tips point into the wind; they often form along coasts that have strong on-shore winds, abundant sand, and vegetation that partly cover the sand.

39. _______________- A glacier that forms when one or more valley glaciers emerge from the confining walls of a mountain valleys and spreads out to create a broad sheet in the lowlands at the base of the mountains.

40. _______________ - A temporary lake in a playa.

41. _______________- An epoch of the Quaternary period beginning about 1.8 million years ago, and ending about 10,000 years ago. Best known as the time of extensive continental glaciation.

42. _______________- The process by which pieces of bedrock are lifted out of a place by a glacier.

43. _______________- A Lake formed during a period of increased rainfall. During the Pleistocene epoch this occurred in some nonglaciated region during period of ice advance elsewhere.

44. _______________ - Ground-up rock produced by the grinding of effect of a glacier.

45. _______________- The steep, leeward slope of a sand dune; it maintains an angle of about 34 degrees.

46. _______________- Isolated hill of sand that exhibits a complex form and develops where wind directions are variable.

47. _______________- Sediments deposited by glacial meltwater.

48. _______________ - Unsorted sediment deposited directly by a glacier.

49. _______________- A series of long ridges oriented at the right angle of the prevailing wind; these dunes form where vegetation is sparse and sand is very plentiful.

50. _______________ - same as alpine glacier which is a glacier confined to a mountain valley, which in most instance has previously been a stream valley

51. _______________ - A relatively narrow body of stratified drift deposited on a valley floor by meltwater streams that issue from a valley glacier.

52. _______________ -The part of a glacier characterized by snow accumulation and ice formation. Its outer limits in the snowline.

53. _______________- The part of a glacier beyond the zone accumulation where all the snow from the previous winter melts, as does some the glacial ice.

Chapter 6: Glacier, Deserts, and Wind

Ablation	Glacial drift	Outwash Plain
Abrasion	Glacial erratic	Parabolic dune
Alluvial fan	Glacial Trough	Piedmont Glacier
Alpine glacier	Glacial Striations	Playa Lake
Arête	Glacier	Pleistocene epoch
Barchan Dune	Ground Moraine	Plucking
Barchanoid Dune	Hanging Valley	Pluvial Lake
Blowout	Horn	Rock flour
Cirque	Ice Cap	Slip face
Crevasse	Ice Sheet	Star Dune
Cross beds	Ice Shelf	Stratified drift
Deflation	Interior drainage	Till
Desert pavement	Kame	Transverse dune
Drumlin	Kettle holes	Valley Glacier
End moraine	Lateral Moraine	Valley Train
Ephemeral stream	Loess	Zone of Accumulation
Esker	Longitudinal dune	Zone of Wastage
Fiord	Medical Moraine