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Questions and Answers
The recrystallization of minerals or deposition of fine materials that occurs directly below the zone of eluviation is referred to as the zone of illuviation
The recrystallization of minerals or deposition of fine materials that occurs directly below the zone of eluviation is referred to as the zone of illuviation
True (A)
A landscape consisting of overlapping alluvial fans along a mountain front is called a bajada
A landscape consisting of overlapping alluvial fans along a mountain front is called a bajada
True (A)
Which of the following deserts in Africa is best associated with the descending air of the subtropical high-pressure cell of the three-cell model of atmospheric circulation?
Which of the following deserts in Africa is best associated with the descending air of the subtropical high-pressure cell of the three-cell model of atmospheric circulation?
- Patagonian Desert
- Kalahari & Namib Desert (correct)
- Mojave Desert
- Rub Al-Khali Desert
Which of the following aeolian sediment transport processes requires that the sediment remains in contact with the surface at all times?
Which of the following aeolian sediment transport processes requires that the sediment remains in contact with the surface at all times?
Which of the following indicates when the cultural revolution of agriculture (horticulture) began?
Which of the following indicates when the cultural revolution of agriculture (horticulture) began?
When meltwater accumulates at the base of a glacier, providing a lubricant between the underlying rock and the glacier, the glacier moves through the process called which of the following?
When meltwater accumulates at the base of a glacier, providing a lubricant between the underlying rock and the glacier, the glacier moves through the process called which of the following?
After the transition from snow to firn, additional compaction results in more air being squeezed out so that the resulting mass of dense material, with the ice crystals aligned to each other, is approximately how much of a solid mass?
After the transition from snow to firn, additional compaction results in more air being squeezed out so that the resulting mass of dense material, with the ice crystals aligned to each other, is approximately how much of a solid mass?
What type of feature is formed by the gradual thickening, compaction, and recrystallization of snow and water over time?
What type of feature is formed by the gradual thickening, compaction, and recrystallization of snow and water over time?
The part of the glacier where snow melts is called which of the following?
The part of the glacier where snow melts is called which of the following?
Freshly fallen snow is roughly 20% air
Freshly fallen snow is roughly 20% air
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Study Notes
Geomorphology and Glaciers
- The zone of illuviation refers to the recrystallization of minerals or deposition of fine materials that occurs directly below the zone of eluviation.
- A landscape consisting of overlapping alluvial fans along a mountain front is called a bajada.
Deserts and Atmospheric Circulation
- The Sahara Desert in Africa is best associated with the descending air of the subtropical high-pressure cell of the three-cell model of atmospheric circulation.
Aeolian Sediment Transport
- Saltation is an aeolian sediment transport process that requires the sediment to remain in contact with the surface at all times.
Cultural Revolution of Agriculture
- The cultural revolution of agriculture (horticulture) began around 10,000 years ago.
Glaciers and Meltwater
- When meltwater accumulates at the base of a glacier, providing a lubricant between the underlying rock and the glacier, the glacier moves through the process called basal sliding.
Glacial Formation and Composition
- After the transition from snow to firn, additional compaction results in more air being squeezed out, resulting in a dense material with ice crystals aligned to each other, making up approximately 90% of the solid mass.
- The gradual thickening, compaction, and recrystallization of snow and water over time form a feature called ice.
- The part of the glacier where snow melts is called the ablation zone.
- Freshly fallen snow is roughly 20% air.
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