1. Which of the following is not a term that can be used in Darcy’s Law equation
ID: 297705 • Letter: 1
Question
1. Which of the following is not a term that can be used in Darcy’s Law equation? A. Hydraulic conductivity. B. Cross-sectional area of column. C. Precipitation rate. D. Hydraulic gradient.
2. The ability of geological materials to pass groundwater is referred to as: A. Hydraulic conductivity. B. Porosity. C. Precipitation. D. Transpiration. 13. Chemical and isotopic tracers are used to determine: A. The thickness of the groundwater aquifer. B. The petrography of the rocks forming the aquifer. C. The hydrologic flow paths of the groundwater in the aquifer. D. None of the above.
3. Chemical and isotopic tracers are used to determine: A. The thickness of the groundwater aquifer. B. The petrography of the rocks forming the aquifer. C. The hydrologic flow paths of the groundwater in the aquifer. D. None of the above. 3
4. The excess of rainfall intensity over soil infiltration will likely results in: A. Horton overland flow. B. Horton infiltration flow. C. Darcy’s overland flow. D. Horton inland flow.
5. In a hydrograph, the time difference between the peak rainfall intensity and peak river discharge is referred to: A. Baseflow. B. Rising limb. C. Falling limb. D. Lag to peak.
6. Relating the dissolved material concentration to river discharge is referred to as: A. Hydrograph. B. Chemograph. C. Histogram. D. Scattergraph.
7. Relating the suspended sediment to river discharge is referred to as: A. Sedigraph. B. Rockigraph. C. Fragigraph. D. None of the above.
8. Gaining streams refer to: A. Rivers recharged by melting snow. B. Rivers recharged by precipitation. C. Rivers in which groundwater into the stream. D. Aquifers recharged by rivers.
9. Rivers that flow only during large or intense precipitation event or during snowmelt are referred to as: A. Perennial streams. B. Ephemeral streams. C. Seasonal streams. D. Intermittent streams.
10. ………………………………. Is a commonly used datum to describe the size of floods that fill the channel but are not high enough to inundate the floodplain. A. No floodplain flow. B. Bankfull flow. C. Riverfull flow. D. Floodplain flow.
11. Estimating the amount of water received by watersheds from precipitation and that lost from the watersheds by evapotranspiration, discharge and infiltration is referred to as: A. Water equality. B. Water transformation. C. Water efficiency. D. Water balance.
12. Orographic lifting causes: A. Rainfall shadow. B. Groundwater redirection. C. Basin subsidence. D. Overall decrease in precipitation.
13. Which of the flowing is not an example of hydrologic landforms? A. Karst topography. B. Sand dunes. C. Sinkholes. D. Travertine.
14. Dripstones are: A. Associated with karst forming process. B. Found in caves. C. Found in region dominated by limestones. D. All of the above.
15. Slope-forming material that moved by gravity force is referred to as: A. Colluvium. B. Alluvium. C. Till. D. Loess.
16. Strength of rock and soil refer to: A. Their ability of the soil to consolidate into a rock. B. The ability of rock and soil to resist erosion. C. The ability of the rock to resist metamorphic changes D. The ability of the soil to crystallize.
17. Angle of internal friction and cohesion are two important factors that determine? A. Shear strength of materials. B. The length of rivers. C. The metamorphic grade of the rocks. D. The crystallization series of materials.
18. The angle of internal friction is: A. The volume material in a hillslope. B. The slope angle of a hillslope. C. The slope of the line relating shear strength and normal stress. D. None of the above.
19. The effective normal stress can be expressed as: A. Normal stress – shear stress. B. Shear stress – normal stress. C. Norma stress / shear stress. D. Normal stress – pore water pressure.
20. Weathering affects rock strength by: A. Lower cohesion. B. Increase porosity and permeability. C. Increase pore water pressure. D. All of the above.
Explanation / Answer
answers :
1) Precipitation rate
darcys law Q = -KAdh/dl or v = Q/A = -K*dh/dl
v = specific discharge, K = hydraulic conductivity, dh/dl = hydraulic gradient, A = Cross-sectional area of column
2) Hydraulic conductivity
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