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SWS3022 Exam 1 Study Guide | Questions And Answers Latest {} A+ Graded | 100% Verified
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SWS3022 Exam 1 Study Guide | Questions And Answers Latest {} A+ Graded | 100% Verified
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SWS3022 Exam 1 Study Guide | Questions And Answers Latest {2024- 2025} A+ Graded |100% Verified
Which horizon closely resembles the parent material? - Horizon C
Which horizon is the zone of eluviation? - Horizon E
Which horizon is the uppermost mineral horizon? - Horizon A
Which horizon has greater than 20% O.M., dark in color? - Horizon O
Which horizon is the zone of illuviation? - Horizon B
Refers to the measure of the degree of lightness or darkness, to total amount of light reflected. - VALUE
Refers to the measure of the strength or intensity of the spectral color. - CHROMA
Refers to the dominant spectral color. - HUE
Soil A contains 40% sand, 40% silt, and 20% clay
Soil B contains 55% sand, 5% silt, and 40% clay
Which soil has the greater specific surface area? - Soil B
A 40 gram soil sample is placed in a 1-Liter sedimentation cylinder. After shaking the cylinder to suspend
the particles, a hydrometer reading is taken after 2 minutes. The hydrometer reading is 30 g/L. The soil
is allowed to settle for 6 hours. The hydrometer reading at that time is 8 g/L.
What is the % clay content of the sample? - 20% Clay
8 g/L / 40 g/L = 0.2
A soil horizon has a color of 10 YR 8/1 and is very sandy. This is most likely _____ horizon. - Horizon E
, A subsurface soil horizon has a color of 5 YR 6/8 and has a texture of sandy clay loam. This is most likely
_____ horizon. - Horizon B
You have a 100 cm^3 sample of soil A. The sample is oven dried and weighed. The weight is 160 grams.
What is the bulk density of soil A? - 1.6 g/cm^3
160/100 = 1.6
You have a 100 cm^3 sample of soil A. The sample is over dried and weighed. The weight is 160 grams.
What is the porosity of soil A? - 40%
1-(1.6/2.65) * 100 = 40%
You have a 100 cm^3 sample of soil B. The sample is oven dried and weighed. The weight is 120 grams.
What is the bulk density of soil B? - 1.2 g/cm^3
120/100 = 1.2
You have a 100 cm^3 sample of soil B. The sample is oven dried and weighed. The weight is 120 grams.
What is the porosity of soil B? - 55%
1-(1.2/2.65) * 100 = 55%
You obtain a soil sample with a volume of 400 cm^3. It has a moist weight of 450 grams and an oven-dry
weight of 400 grams. What is the gravimetric water content? - 12.5%
(450-400)/400 = 12.5%
You obtain a soil sample with a volume of 400 cm^3. It has a moist weight of 450 grams and and oven-
dry weight of 350 grams. What is the volumetric water content? - 25%
(450-350)/400 = 25%
You obtain a soil sample with a volume of 400 cm^3. It has a moist weight of 450 grams and an oven-dry
weight of 350 grams. What is the gravimetric water content? - 28.6%
(450-350)/350 = 28.6%
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