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The USDA Soil Orders - Statistics
General Stats
- This quiz has been taken 133 times
- The average score is 7 of 12
Answer Stats
| Description | Soil Order | % Correct |
|---|---|---|
| Clay-rich soil characterized by the presense of large amounts of swelling clays | Vertisol | 88%
|
| Dryland soil with little organic matter and little leaching of nutrients, lots of salts | Aridisol | 73%
|
| Soil of recent orgin. Soil horizon formation limited to thin A horizon. | Entisol | 71%
|
| Soil formed from volcanic ash | Andisol | 69%
|
| Ancient soil defined by heavy weathering, oxidation of iron in sediment | Oxisol | 61%
|
| Soil dominated by thick and dark A horizon, relative lack of leaching of nutrients, grassland environments | Mollisol | 55%
|
| Soil of recent orgin. Soil formation limited to A and a B horizon | Inceptisol | 51%
|
| Leached soil poor in nutrients and highly acidic most present in coniferous forests | Spodosol | 51%
|
| Old soil with heavy weathering, heavy accumulation of clays below the surface. Frequent reddish color due to oxidation | Ultisol | 47%
|
| Soil containing permafrost close to the surface | Gelisol | 45%
|
| Soil with accumulation of clays below the surface and somewhat leached, though not to the extent of older soils elsewhere | Alfisol | 43%
|
| Soil dominated by buildup of organic matter | Histisol | 41%
|
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