SWS3022 Lab Exam 1 Questions and Answers 100% Pass

SWS3022 Lab Exam 1 Questions and Answers 100% Pass 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. 2Katelyn Whitman, All Rights Reserved © 2025 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. 3Katelyn Whitman, All Rights Reserved © 2025 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