.(20) For the following multiple-choice questions, choose and circle the most co
ID: 1714617 • Letter: #
Question
.(20) For the following multiple-choice questions, choose and circle the most correct answer and provide a brief (one-sentence explanation of your choice. a. Transport equations in hydrology and hydraulics... a) are commonly used by CalTrans (CA Dept of Transportation)? b) indicate that fluxes are proportional to the energy gradients acting on the constituent of concern (e.g. water, solutes). c) simplify to a common form for many processes quantified in hydrology d) are derived from classical Newtonian physics. e) have no bearing on daily life because of the ubiquity of cell phone usage. f) depend on the Reynolds number g) b & c above. h) none of the above. b. The proportionality coefficient in these transport equations. a) are always functions of the Reynolds number. b) are often derived from classical Newtonian c) have some relationship to the flow path d) are found in Tables compiled by Google e) b & c above. f) none of the above. c. Evapotranspiration rates from a recently irrigated pasture.. a) increase with increasing humidity. b) decrease with increasing windspeed. c) depend on upwind fetch distance and conditions. d) are controlled by El Nino effects. e) are only a function of incident solar radiation f) a, c & e above. g) all of the above. d. Unsaturated soils... a) have greater infiltration rates than when b) do not sustain plant growth. c) limit (i.e. reduce) evaporation rates from the d) have pore water at positive pressures. e) are difficult to cultivate. f) a & c above g) none of the above.Explanation / Answer
a.f
Reynolds Transport Theorem: The total rate of change of any extensive property B (=bdm = bd") of a system occupying a control volume C.V. at time ‘t’ is equal to the sum of:
b. a
c. e
Evapotranspiration (ET) is an energy-driven process. ET increases with temperature, solar radiation, and wind. ET decreases with increasing humidity.
d. a&c
The rate decreases as the soil becomes saturated.
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Reynolds Transport Theorem: The total rate of change of any extensive property B (=bdm = bd") of a system occupying a control volume C.V. at time ‘t’ is equal to the sum of:
- the temporal rate of change of B within the C.V.
- the net flux of B through the control surface C.S. that surrounds the C.V.
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