Quiz 6 with Answers | Introductory Soils | NRES 201, Quizzes of Earth Sciences

Download Quiz 6 with Answers | Introductory Soils | NRES 201 and more Quizzes Earth Sciences in PDF only on Docsity! NRES 201 Fall 2008 Quiz 6 Please enter your last name, network id, and NRES 201 on the scantron sheet 1. One atmosphere of pressure is approximately equal to which of the following values in head units? A. 10 cm B. 100 cm C. 10 m D. 100 m E. 1.0 km 2. A. True or B. False There is more plant available water in 1 m3 of a sandy soil than there is in a silt loam soil (assume both soils are at -1/3 bar and both have the same bulk density) 3. During the several days subsequent to a rain event (~ 1 inch rain), which of the following soil properties has the greatest direct impact on soil heat capacity? A. Clay content B. Living biota C. Humus/Organic matter D. Water content E. Soil minerals 4. At which of the following soil moisture potentials (expressed as kPa) is the waters' energy level lowest? A. +5 B. 0 C. -31 D. -1500 E. -3100 5. A. True or B. False The boiling point of a salt solution (1.0 M NaCl) will generally be greater than that of pure water at room temperature and pressure. 6. A. True or B. False Water can flow upwards in soil. 7. Which of the following is not a property of water? (i.e., not discussed in class) A. Viscosity B. Heat of vaporization C. Polarity D. Concatenation 8. A. True or B. False The property of cohesion in water stems from the attraction of water molecules for soil solids. 9. Unsaturated water flow _____________ (select the answer which is true). A. typically involves flow rates that are faster than during saturated flow B. is controlled primarily by the force of gravity (i.e., the gravity potential) C. is stimulated by the osmotic potential D. is always directed vertically downward E. occurs in soils that are at water contents drier than field capacity 10. Which of the following will typically have the greatest infiltration rate? A. Beach Sand B. Sandy Loam C. Clay Loam D. Clay