SOIL 2124 EXAM 2 WITH COMPLETE SOLUTIONS 100% VERIFIED!!!!
ALREADY GRADED A+
Why is it important to know soil physical properties? - (ANSWER)1. Basic properties are used in profile
descriptions/ soil classifications.
2. Aids in land use decisions.
3. Provides a rough index of soil chemical/nutritional/biological properties
What are the 2 types of soil physical properties? - (ANSWER)Static and Dynamic
Soil properties that do not change on short time scales under natural conditions or without significant
applied force - (ANSWER)Static soil physical properties
Ex: soil texture
Soil properties that readily change on short time scales under natural conditions or with relatively minor
amounts of force - (ANSWER)Dynamic soil physical properties
Soil Structure, Soil Color
What are the key soil physical properties used in a profile description? - (ANSWER)1. Soil Color
2. Soil Texture
3. Soil Structure
4. Soil Consistence
5. Soil Density
The most obvious and easily determined soil characteristic - (ANSWER)Soil Color
what do we use to describe color? - (ANSWER)munsell color system, hue/value/chroma
high chroma= - (ANSWER)well drained soil, oxidizing conditions
,SOIL 2124 EXAM 2 WITH COMPLETE SOLUTIONS 100% VERIFIED!!!!
ALREADY GRADED A+
chroma of 2 or less= - (ANSWER)red fe-oxide coatings had been removed under reducing conditions
factors influencing soil color - (ANSWER)organic matter content-
(darkness of soil)
soil color and temperature-
(dark absorb more heat, usually warm up quicker and have higher temps)
Soil color and parent material -
(generally, dark parent material will develop into dark soils)
no gray colors within the top 48 inches of soil - (ANSWER)Well-drained
gray colors btwn 24 to 48 inches from the surface - (ANSWER)Moderately well-drained
gray colors between 12 to 24 inches from surface - (ANSWER)somewhat poorly drained
A horizon < 12 inches thick with gray colors dominant below A horizon - (ANSWER)poorly drained
>10 inches of black organic surface underlain by gray colors - (ANSWER)very poorly drained
A soil has a Chroma less than or equal to 2 and value greater than 4 - (ANSWER)soil considered gray
Soils exhibiting gray color is said to be - (ANSWER)gleyed
The gray color in soils are are vital for - (ANSWER)delineating wetlands/ identifying wetland boundaries
, SOIL 2124 EXAM 2 WITH COMPLETE SOLUTIONS 100% VERIFIED!!!!
ALREADY GRADED A+
Dominant soil spectral color - (ANSWER)Hue
Soil lightness, white to black - (ANSWER)Value
Color purity or intensity - (ANSWER)Chroma
Relative proportion of sand, silt and clay - (ANSWER)Soil Texture
Is organic matter considered in determining soil texture? - (ANSWER)NO
Effective diameter of 2.0-0.05 mm - (ANSWER)Sand
Effective diameter of 0.05-0.002 mm - (ANSWER)Silt
Effective diameter of <0.002 mm - (ANSWER)Clay
More detailed textural classifications of sand - (ANSWER)very coarse- 2.0-1.0 mm
coarse- 1.0-0.5 mm
medium- 0.5-0.25 mm
fine- 0.25-0.10 mm
very fine- 0.10-0.05 mm
Modifiers used for coarse materials > 2 mm in effective diameters - (ANSWER)gravels - 2mm-3 in
cobbles - 3 in- 10in
stones - 10 in- 24 in
boulders - >24 in
ALREADY GRADED A+
Why is it important to know soil physical properties? - (ANSWER)1. Basic properties are used in profile
descriptions/ soil classifications.
2. Aids in land use decisions.
3. Provides a rough index of soil chemical/nutritional/biological properties
What are the 2 types of soil physical properties? - (ANSWER)Static and Dynamic
Soil properties that do not change on short time scales under natural conditions or without significant
applied force - (ANSWER)Static soil physical properties
Ex: soil texture
Soil properties that readily change on short time scales under natural conditions or with relatively minor
amounts of force - (ANSWER)Dynamic soil physical properties
Soil Structure, Soil Color
What are the key soil physical properties used in a profile description? - (ANSWER)1. Soil Color
2. Soil Texture
3. Soil Structure
4. Soil Consistence
5. Soil Density
The most obvious and easily determined soil characteristic - (ANSWER)Soil Color
what do we use to describe color? - (ANSWER)munsell color system, hue/value/chroma
high chroma= - (ANSWER)well drained soil, oxidizing conditions
,SOIL 2124 EXAM 2 WITH COMPLETE SOLUTIONS 100% VERIFIED!!!!
ALREADY GRADED A+
chroma of 2 or less= - (ANSWER)red fe-oxide coatings had been removed under reducing conditions
factors influencing soil color - (ANSWER)organic matter content-
(darkness of soil)
soil color and temperature-
(dark absorb more heat, usually warm up quicker and have higher temps)
Soil color and parent material -
(generally, dark parent material will develop into dark soils)
no gray colors within the top 48 inches of soil - (ANSWER)Well-drained
gray colors btwn 24 to 48 inches from the surface - (ANSWER)Moderately well-drained
gray colors between 12 to 24 inches from surface - (ANSWER)somewhat poorly drained
A horizon < 12 inches thick with gray colors dominant below A horizon - (ANSWER)poorly drained
>10 inches of black organic surface underlain by gray colors - (ANSWER)very poorly drained
A soil has a Chroma less than or equal to 2 and value greater than 4 - (ANSWER)soil considered gray
Soils exhibiting gray color is said to be - (ANSWER)gleyed
The gray color in soils are are vital for - (ANSWER)delineating wetlands/ identifying wetland boundaries
, SOIL 2124 EXAM 2 WITH COMPLETE SOLUTIONS 100% VERIFIED!!!!
ALREADY GRADED A+
Dominant soil spectral color - (ANSWER)Hue
Soil lightness, white to black - (ANSWER)Value
Color purity or intensity - (ANSWER)Chroma
Relative proportion of sand, silt and clay - (ANSWER)Soil Texture
Is organic matter considered in determining soil texture? - (ANSWER)NO
Effective diameter of 2.0-0.05 mm - (ANSWER)Sand
Effective diameter of 0.05-0.002 mm - (ANSWER)Silt
Effective diameter of <0.002 mm - (ANSWER)Clay
More detailed textural classifications of sand - (ANSWER)very coarse- 2.0-1.0 mm
coarse- 1.0-0.5 mm
medium- 0.5-0.25 mm
fine- 0.25-0.10 mm
very fine- 0.10-0.05 mm
Modifiers used for coarse materials > 2 mm in effective diameters - (ANSWER)gravels - 2mm-3 in
cobbles - 3 in- 10in
stones - 10 in- 24 in
boulders - >24 in
