 |
| 1 | |
In an advancing glacier |
| | A) | accumulation equals ablation |
| | B) | accumulation exceeds ablation |
| | C) | ablation exceeds accumulation |
| | D) | basal sliding always occurs |
|
|
|
| 2 | |
When a glacier retreats, |
| | A) | a series of end moraines forms. |
| | B) | a series of eskers forms. |
| | C) | lateral moraines are destroyed |
| | D) | none of these consequences happens. |
|
|
|
| 3 | |
Glacial erosion by plucking |
| | A) | is most active at the end of a glacier |
| | B) | is most active at the head of a glacier |
| | C) | is most active along the sides of a glacier |
| | D) | is a very minor aspect of glacial erosion. |
|
|
|
| 4 | |
A sorted glacial deposit |
| | A) | moraine |
| | B) | outwash |
| | C) | till |
| | D) | groove |
|
|
|
| 5 | |
A glacial landform that forms on the sides of glaciers is |
| | A) | a lateral moraine |
| | B) | an end moraine |
| | C) | a drumlin |
| | D) | both a and c are correct |
|
|
|
| 6 | |
This face of a dune has an angle equal to the angle of repose of sand: |
| | A) | the windward face |
| | B) | the leeward face |
| | C) | the slip face |
| | D) | both b and c are correct |
|
|
|
| 7 | |
Sand movement on the leeward side of a dune |
| | A) | occurs by bouncing of grains |
| | B) | is by suspension |
| | C) | occurs by slumping and flowing |
| | D) | forms ripples |
|
|
|
| 8 | |
Which of the following is formed by wind erosion? |
| | A) | cross-bedded sand |
| | B) | sand dunes |
| | C) | ripples |
| | D) | desert pavement |
|
|
|
| 9 | |
Unsorted glacial sediment |
| | A) | erratic |
| | B) | outwash |
| | C) | till |
| | D) | groove |
|
|
|
| 10 | |
Windblown silt |
| | A) | outwash |
| | B) | loess |
| | C) | till |
| | D) | dune |
|
|
|
| 11 | |
The latitudinal zone in which the largest portion of Earth's deserts are located |
| | A) | subtropical |
| | B) | tropical |
| | C) | temperate |
| | D) | polar |
|
|
|
| 12 | |
Desertification results from |
| | A) | removal of native vegetation |
| | B) | lowering of the water table |
| | C) | plowing |
| | D) | all of the above |
|
|
|
| 13 | |
A true glacier must |
| | A) | be over 1000 feet thick. |
| | B) | begin poleward of 60 degrees latitude. |
| | C) | have some kind of motion. |
| | D) | contain large volumes of water. |
|
|
|
| 14 | |
Typical glacial flow is measured in |
| | A) | cm/day. |
| | B) | cm/year. |
| | C) | cm/decade. |
| | D) | cm/sec. |
|
|
|
| 15 | |
Compared to rivers, wind transports |
| | A) | much more sediment. |
| | B) | much larger sediment. |
| | C) | much less sediment. |
| | D) | about the same amount of sediment. |
|
|
|
| 16 | |
Wind deposition creates |
| | A) | moraines. |
| | B) | ventifacts. |
| | C) | deflation. |
| | D) | dunes. |
|
|
|
| 17 | |
A valley eroded by a glacier that then retreated has this cross-sectional shape: |
| | A) | V-shaped |
| | B) | Y-shaped – wider at the top and narrower at the bottom |
| | C) | U-shaped |
| | D) | semi-circular – looking like one half of a circle |
|
|
|
| 18 | |
Tributary glaciers to a main glacier tend to form these: |
| | A) | Hanging valleys |
| | B) | Eskers |
| | C) | Drumlins |
| | D) | Grooves |
|
|
|
| 19 | |
Boulders deposited by glaciers that since retreated are called |
| | A) | Eskers |
| | B) | Outwash |
| | C) | Moraines |
| | D) | Erratics |
|
|
|
| 20 | |
Rockfall is a hazard at Yosemite National Park, California, and will continue to be until |
| | A) | another ice age causes valleys within this park to again fill with ice |
| | B) | an earthquake occurs causing all unstable rock to fall |
| | C) | slopes, oversteepened by glaciation, reach a stable, but lower angle |
| | D) | slopes reach a stable, but higher angle. |
|
|
|
| 21 | |
Africa is slowly moving northeastward due to continental drift. As this motion continues, it will appear as if: |
| | A) | the equatorial rainforest is moving northeastward. |
| | B) | the equatorial rainforest is moving southwestward |
| | C) | the Sahara Desert is moving southwestward |
| | D) | both b and c are correct. |
|
|
|
| 22 | |
The leeward side of prominent mountain ranges tend to be |
| | A) | moist |
| | B) | arid |
| | C) | lushly vegetated |
| | D) | both a and c are correct |
|
|
|
| 23 | |
The Gobi Desert of China |
| | A) | is a temperate type desert |
| | B) | is a subtropical type desert |
| | C) | is within the arctic circle |
| | D) | is a rain shadow type desert |
|
|
|
| 24 | |
Given India's latitude: |
| | A) | it should be entirely a subtropical desert |
| | B) | it should be in a rain shadow |
| | C) | it should be much more moist than it is |
| | D) | it should be arid only on its southern tip |
|
|
|
| 25 | |
Water is the most significant agent of erosion in deserts because |
| | A) | vegetation is sparse |
| | B) | chemical weathering is intense |
| | C) | although arid, streams flow year-round |
| | D) | precipitation primarily falls as drizzle |
|
|
.