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| 1 |
In cool humid climates, such as in
the regions of the boreal forest biome, the process of ________ develops a shallow,acidic,
ashy-gray soil low in nutrients. |
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laterization |
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gleization |
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podzolization |
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calcification |
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salinization |
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| 2 |
A soil-forming process called
___________ is typical of the humid tropics. This process includes rapid weathering of the
parent material, leaching of silica, and a concentration of iron and aluminum oxides. |
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laterization |
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gleization |
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podzolization |
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calcification |
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salinization |
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| 3 |
In arid and semiarid climates,
upward movement of moisture in the soil may concentrate calcium carbonate in the upper
layers of the soil, in a process known as _____________. |
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laterization |
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podzolization |
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gleization |
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calcification |
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salinization |
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| 4 |
_____________ is a soil-forming
process that takes place in cool, humid climates, where drainage is poor, and the soil is
waterlogged. The process produces dark, highly organic A horizons. |
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laterization |
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gleization |
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podzolization |
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calcification |
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salinization |
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| 5 |
In arid climates, where drainage is
poor, and water moves upward in the soil and evaporates, salts are deposited at the
surface of the soil. This process is ________________. |
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laterization |
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gleization |
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podzolization |
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salinization |
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calcification |
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| 6 |
Which soil order is the newest, most
recently developed soil, without soil horizons? |
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entisols |
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spodosols |
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oxisols |
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mollisols |
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ultisols |
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| 7 |
Which soil order covers the largest
amount of land, approximately 1/5 of the land surface of the Earth? |
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millisols |
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histosols |
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aridisols |
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ultisols |
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vertisols |
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| 8 |
Which soil order contains soft,
nutrient-rich soils, often found in grassland regions, that are very productive for
agriculture? |
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oxisols |
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histosols |
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ultisols |
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spodosols |
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mollisols |
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| 9 |
Cation exchange capacity would most
likely be highest in a soil that is |
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very sandy |
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low in organic matter |
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coarse-textured |
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high in clay and organic matter |
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silty, and low in organic matter |
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| 10 |
When gravitational water has drained
off, and most of the pore spaces in a soil are filled with water, the soil is said to be
at ____________________. |
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wilting point |
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hygroscopic capacity |
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field capacity |
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capillary capacity |
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adhesion point |
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