Sws3022 Study guides, Class notes & Summaries

SWS3022 Exam Questions and Answers All Correct What happens to phosphorus when the soil is basic (high pH)? - Answer-- insoluble solids are formed (Calcium phosphates) - Ca + HPO4 = CaHPO4 - CaHPO4 will crystallize overtime and become highly insoluble What pH is preferred for plant availability/solubility? - Answer-6.5 What are the four types of phosphorus immobilization? - Answer-- low pH (Fe and Al phosphate solids) - high pH (Ca phosphate) - fixation in crystalline Fe and Al oxi...

SWS3022 Exam 3 Questions and Answers All Correct Define an acid - Answer-Any substance which increases the hydrogen ion concentration in a solution. Know the two ions considered acids in soils` - Answer-Hydrogen & Aluminum Understand how aluminum contributes to soil acidity - Answer-Aluminum has the ability to facilitate the splitting of water and react with the resulting H+. Aluminum reacts with water to bind to the hydroxide, leaving the hydrogen ion not neutralized (so lots of H+'s). ...

SWS3022 Exam 2 Questions with Correct Answers What is the degree to which organic contaminants impact soil and water quality related to? - Answer-water solubility What are the three factors that water solubility influences in organic contaminants? - Answer-mobility, persistence, and bioavailability What are the two factors that cause some organic chemicals to be able to dissolve in water? - Answer-being polar and/or electrically charged organochlorines - Answer-non-ionic, non-polar org...

SWS3022 Soil Taxonomy Exam Questions with Correct Answers T or F: A soil has a high CEC and a low Base Saturation. It is difficult to raise the pH. - Answer-T High CEC = Numerous Negative Sites Low %B.S. = Most Sites occupied by ACIDS High amounts of acid on exchange complex must be replaced/neutralized T or F: The suffix -ent indicates an entisol. - Answer-T T or F: The subordinate horizon designation, t, indicates a subsurface accumulation of OM. - Answer-F indicates silic...

SWS3022 Lab Exam 1 Questions and Answers What is the diameter of a sand particle? - Answer-2.0 - 0.05 mm What is the specific surface area of a sand particle? - Answer-444 cm^2/g What is the diameter of a silt particle? - Answer-0.05 - 0.002 mm What is the specific surface area of a silt particle? - Answer-100,000 cm^2/g What is the diameter of a clay particle? - Answer-<0.002 mm What are the 3 particle size fractions? - Answer-Sand, Silt, and Clay How many soil textura...

SWS3022 UF Exam 3 Questions with Correct Answers The very high pH (>8.5) levels found in some arid regions are most likely due to the high levels of exchangeable_______: - Answer-Na Sodic soils generally have a poor physical condition. To what is this most likely due? - Answer-Dispersion of the Na-saturated soil colloids Which of the following human activities is most apt to result in long term increase in soil PH? - Answer-irrigation with high salt water Which of the following is ...

SWS3022 Exam 3 Questions and Answers Chroma - Answer-Strength of the spectral color (peach to neon orange); high concentrations of Fe cause soils to have a high chroma number Sand particle size separates - Answer-Mostly visible, gritty. Quartz. 0.2-0.05 mm. Silt particle size separates - Answer-Microscopic, smooth/silky.Quartz. 0.05-0.002 mm. Clay particle size separates - Answer-Sub-microscopic, colloidal. Secondary minerals (more reactive). <0.002 mm. How does texture affect o...

SWS3022 Exam 1 Questions and Answers All Correct How does texture affect overall porosity? - Answer-Finer-textured soils have greater overall porosity than coarse-textured soils. Finer soils have smaller pore spaces which increase their capillarity, and allow them to hold water and gases better. How does texture affect water and gas movement in soils? - Answer-Coarse-textured soils have bigger pore spaces and smaller total porosity, allowing water and gas to move much faster. Why are the ...

SWS3022 Exam 3 Chapter 9-12 | Questions And Answers Latest {} A+ Graded | 100% Verified

SWS3022 Exam 3 Questions and Answers What is "green manure"? - Answer-When the plant dies, the fixed nitrogen is mineralized during decomposition, making it available to other plants. What is the artificial process by which atmospheric N is fixed? How much world energy is used? Also, be familiar with the fact that the product of this process is used as a foundation for the production of a number of N fertilizer types. - Answer-It's called the Haber-Bosch process. It uses 1-2 percent of t...