TAMU SCSC 301 TESTS COMPILATION BUNDLE

A soil with a pH of 8.0, 10% exchangeable sodium, and 5 dS/m conductivity is: -saline, non-sodic -non-saline, non-sodic -non-calcareous -saline, sodic -non-saline, sodic correct answer: saline, non-sodic The most economical means of decreasing the soil pH from 7.0 to 4.5 in a non-calcare...

After a growing season of heavy tillage traffic across a soil, a soil property that is least affected is: correct answer: Particle density From a biological point of view, the most important role of structural development in clayey textured soils is to provide an increase in: correct answer: ma...

After a growing season of heavy tillage traffic across a soil, a soil property that is affected is: correct answer: bulk density From a biological point of view, the most important role of structural development in fine textured soils is to provide an increase in: correct answer: macro porosity...

A soil with 25% _____ and 25% ______by volume is close to ideal -water; organic matter -Air; mineral matter -Air; water -Mineral matter; organic matter correct answer: Air; water Soil is a dynamic natural body having properties due to the combined effects of _______ and biota as modified by ...

Plants obtain from soil: correct answer: - Physical support - Air - Water - Temperature regulation - Protection - Nutrient elements (17 essential elements) Root respiration correct answer: - Produce CO2 - Release O2 (ventilation in soil pores) Macronutrients (8) correct answer: - C...

Loess correct answer: Silt to very fine sand. Deposited by the wind. Volcanic ash correct answer: Soils of very low bulk density and high fixation of phosphorus. Glacial till correct answer: Poorly sorted. Glacial wash correct answer: Well sorted. Texture correct answer: The size di...

When organic-N is converted into ammonia or ammonium, the process is called? correct answer: Ammonification During nitrification, ______ is converted to ______ correct answer: Ammonium; Nitrate Which soil minerals are likely to trap, or fix, NH4+ and K+ in their interlayer making them relati...

Which horizon is not part of the soil solum? correct answer: C Organic matter in soil typically accounts for ____% or less of the soils total volume. correct answer: 5% Pore space in soil may contain either _____ or _____ correct answer: Air Water Soils are the result of ______ and biot...

A soil has a bulk density of 1.3 g/cm^3, a particle density of 2.6g/cm^3, a total porosity of .5 and a gravimetric water content of 0.2. Calculate the water-filled porosity. correct answer: .26 After a growing season of heavy tillage traffic across a soil, a soil property that is affected is: co...

Which of the following is NOT a carbon-containing compound that is involved in the cycling of carbon associated with most plant/animal life forms? correct answer: calcium carbonate Which organic matter property affects the availability of nutrients to plants? correct answer: Cation exchange cap...

What are the corresponding colors with the associated soils? __1__ colored soils come from organic matter. __2__ colored soils come from iron and aluminum oxides. __3__ colored soils come from silicates and salts. correct answer: 1 --- BLACK 2 --- RED 3 --- WHITE What are the 4 main co...

SCSC 301 Final Exam Questions With Complete Solutions

SCSC 301 - Exam 1 Questions With Complete Solutions

SCSC 301 CH. 12 & 13 Questions With Complete Solutions