A _____ is a fan shaped deposit of sediments left as a stream slows. playa b. arroyo c. dune d. alluvial fan 62. An environment with a lack of...

61. A _____ is a fan shaped deposit of sediments left as a stream slows.

a. playa 

b. arroyo 

c. dune 

d. alluvial fan 

62. An environment with a lack of accumulated water is _____.

a. subtropical 

b. arid 

c. humid 

d. fertile 

63. A dry desert riverbed formed by running water flowing only after rainfall is a (an) _______.

a. playa 

b. arroyo 

c. wash 

d. Both b and c are correct 

64. A temporary desert lake that fills with runoff after rainfall, then quickly dries up is called a (an) _____.

a. . playa 

b. arroyo 

c. loess 

d. Both a and c are correct 

65. A deposit of windblown silt particles is (a)______.

a. slipface 

b. loess 

c. dune 

d. wash 

66. ___ ___ are found on the downwind side of a mountain range.

a. subtropical deserts 

b. rainshadow deserts 

c. no deserts 

d. Both a and b are correct. 

67. The ratio between the amount of water vapor in the air and the amount of water vapor the air can hold is known as _____

a. dew point 

b. relative humidity 

c. evaporation 

d. desertification 

68. ______ are found in both northern and southern hemispheres at around 30° in latitude.

a. subtropical deserts 

b. rainshadow deserts 

c. no deserts 

d. areas of rainfall 

69. Glaciers often leave behind ______, or long grooves in the bedrock.

a. striations 

b. erratics 

c. tarn 

d. drift 

70. If a cirque fills with water after a glacier recedes it forms a _____

a. kettle lake 

b. arête 

c. tarn 

d. kettle 

71. Aretes, horns and cirques are examples of _____ glacial features.

a. erosional 

b. erratic 

c. depositional 

d. recessional 

72. Kettles and moraines are examples of _____ glacial features.

a. erosional 

b. mountain 

c. depositional 

d. erratic 

73. A break in the ice near the surface of a glacier is called a (an) _____.

a. zone of accumulation 

b. zone of wastage 

c. crevasse 

d. snow line 

74. Glacial ice is different from other ice because the crystals become _____.

a. cooler 

b. slipperier 

c. interlocked 

d. less dense 

75. ______ cover Greenland and much of Antarctica.

a. alpine glaciers 

b. continental glaciers 

c. ice bergs 

d. crevasses 

76. A build-up of snow occurs at the _____

a. snow line 

b. zone of accumulation 

c. zone of wastage 

d. zone of fracture 

77. _____ is the balance between snow accumulation and snow melt.

a. glacial budget 

b. zone of accumulation 

c. zone of wastage 

d. glacial flow 

78. When more snow builds up than melts in a season the glacier _____

a. starts to move down hill 

b. advances 

c. retreats 

d. has a balanced glacial budget 

79. When a glacier retreats it often drops off its load of rock particles in deposits called

a. erratics 

b. kettles 

c. drift 

d. striations 

80. A _____ marks the farthest extent to which a glacier advanced.

a. lateral moraine 

b. recessional moraine 

c. Drift 

d. terminal moraine