PWS 282 chapter 3
Which soil moisture regime has the highest soil moisture levels?
Aquic
Epipedons are______________
Diagnostic surface soil horizons that are one of the primary means of classifying soils in the United States.
What soil order does a soil classified as a Typic Hapludoll belong to?
Mollisol
In which of the following epipedons is the organic matter level generally lowest?
Ochric
Which of the following subsurface diagnostic horizons would you expect to find in a highly weathered soil of the humid tropics?
Oxic
Soils in the ______ order are deeply weathered and have deep subsurface horizons of silicon oxide.
Oxisols
Which of the following categories of Soil Taxonomy provides the greatest specificity of soil properties?
Series
Which is likely the best description of a soil classified as a Fluvent?
Soils formed in very recent floodplain alluvium.
__________________ is a significant criterion for differentiating epipedons
Texture, mineral composition, and soil temperature
What soil moisture regime is found in typical Mediterranean type climates, with cool winters and warm, dry summers?
Xeric
Argillic horizons are characterized by ______.
accumulation of silicate clays
Which of the following diagnostic horizons would likely NOT restrict root growth in soils?
albic
The map units on a detail soil map on Web Soil Survey are most likely to be labeled with names from which category of Soil Taxonomy?
series
Which of the following soil temperature regimes would indicate the warmest soil temperatures at 50 cm depth?
thermic
