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SWS3022 Lab Exam 1 | Questions And Answers Latest {} A+ Graded | 100% Verified
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SWS3022 Lab Exam 1 | Questions And Answers Latest {} A+ Graded | 100% Verified
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SWS3022 Lab Exam 1 | Questions And Answers Latest {2024- 2025} A+ Graded | 100%Verified
What are the components to Munsell Soil Color? - Hue, Value, Chroma
What does each component to the Munsell Soil Color indicate? - Hue - Dominant spectra color on a
given page
Value - Light/dark (the lower the number, the darker the color)
Chroma - Intensity/Brightness of color
Say I have a munsell soil color of 10YR 5/6, which of these parts represents the hue, value, and chroma?
- The 10YR represents the Hue
The 5/ represents the Value
The /6 represents the chroma
What differentiates the E1 from the E2 soil (or the E from the Eg) soil horizon? What makes this
difference? - Color.
E1 had a different color than E2 in that E1 was brown/orange and E2 was light in color. The
brown/orange color of the E1 horizon was due to the presence of iron oxides.
What material imparted the color to the E1? - Iron
What diffferentiated the Btg1 from the Btg2? - Clay content. Btg2 had a larger clay content than Btg1.
Btg2 was sandy clay loam while, Btg1 was sandy loam
What are the 3 particle size fractions? - Sand, Silt, and Clay
How many soil textural classes are there? - 12
The soil used for particle size determination last week was from the _____ horizon - Btg
, Which particle size class dominated the above soil? - Sand (size range: 2.0 - 0.05 mm)
Would Btg soil have high or low specific surface area compared to an Ap horizon? - (?)Higher because
there would most likely be more clay present within the lower Btg horizon than on the Ap surface soil
T/F
1 mm = 0.1 cm - T
Why is it necessary to correct the hydrometer reading based on the temperature of the suspension? -
The density and viscosity of water change with temperature. Hydrometers are calibrated at the factory
to read accurate densities at 18C. Therefore, we will have to correct our temperatures.
How were the times at which to take the hydrometer readings determined? - We had to take the
hydrometer readings in accordance with how the particles settle in order. We also had to consider that
our class was only an hour long
T/F
Soil solids comprise roughly 50% of the total soil volume - T
Soil texture refers to the relative amounts of three well-defined soil particle size separates: _______,
________, and _______ - Sand, silt, and clay
T/F
Sand does not refer to "quartz sand" with which we are all familiar. It refers to a discretely defined
particle size between 2.0 and 0.05 mm in diameter, regardless of mineralogy - T
Specific surface area refers to... - surface area per unit mass
T/F
The smaller the particle, the larger the specific surface area - T
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