It Test ENVS 4101, Contaminant Hydrology Max. Pts. 100 Part 1 (50 Points) Direct
ID: 286527 • Letter: I
Question
It Test ENVS 4101, Contaminant Hydrology Max. Pts. 100 Part 1 (50 Points) Directions: Select the one which is best in each case and put the answer in the scanton sheet. 1. An Aquifer, where the ground water only partially fills the aquifer and the upper surface of the ground water (the water table) is free to rise and decline is a). confined aquifer, b), unconfined aquifer, c). tube well, d). water table, e). none of the above 2. An aquifer that is sandwiched between confining beds (layers of impermeable materials such as clay which impede the movement of water into and out of the aquifer) is a). confined aquifer, b). unconfined aquifer, c). tube well, d). water table, e). none of the above 3·The upper surface of groundwater or that level below which the soil is saturated with water, locus of points in soil water at which the hydraulic pressure is equal to atmospheric pressure is a). unconfined aquifer, b). confined aquifer, c). tube well, d). water table, e). none of the above haolartule straciwihhds the sur water and a). Albedo, b). denitrification, c). Cohesion, d). adhesion, e). none of the above 5. Holding together: force holding a solid or liquid together, owing to attraction between lik molecules iS a). Albedo, b). denitrification, c). Adhesion, d). Cohesion, e). none of the above 6. An expression of readiness with which a liquid such as water flows through a soil in respos to a given potential gradient is a). hydraulic gradient, b). electrical conductivity, c). hydra Conductivity, d).hydraulic gradient, e). none of the above 7. The log of the soil moisture tension expressed in centimeters height of a column of water a). Eh b pH, c). pF, d). pe, e). none ofthe above 8. The unconsolidated mantle of weathered rock and soil material on the earth's surface earth materials above slid rock is a). bed rock, b). monolith, c). rogolith, d). regosol/e). none of the above 9. The volume of percentage of the total bulk not occupied by solid particles is a). Percolation, b). infiltration, c). leaching, d). porosity, e), none of the above 10. Soils characterized by their high organic matter content are a). mollisols, b). cerpentisols, c), histosols, d), inceptisols, e), none of the aboveExplanation / Answer
1) An aquifer, where the groudwater only partially fills the aquifer and the upper surface of the groundwater (the water table) is free rise and decline is
Ans. b) unconfined aquifer.
2) An aquifer that is sandwiched between confining beds (layers of impermeable materials such as clay which impede the movement of water into and out of the aquifer) is
Ans. a) confined aquifer.
3) The upper surface of groundwater or that level below which the soil is saturated with water, locus of points in soil water at which the hydraulic pressure is equal to the atmospheric pressure
Ans. d) water table.
4) Molecular attraction which holds the surface of two substances in contact, that is, water ans sand particle is
Ans. d) adhesion.
5) Holding together: force holding a solid or liquid together, owing to attraction between like molecules
Ans. d) cohesion.
6) An expression of readiness with which a liquid such as water flows through a soil in response to a given potential gradient is
Ans. c) hydraulic conductivity.
7) The log of the soil moisture tension expressed in centimeters height of a column of water is
Ans. b) pH.
8) The unconsolidated mantle of weathered rock and soil material on the earths surface; earth material above the rock soil is
Ans. You select the answer (e) none of the above. Here this is called regolith.
9) The volume of percentage of the total bulk not occupied by soil particles is
Ans. d) porosity.
10) Soils characterized by their high organic matter content are
Ans. C) histosols.
Histosols are soils mailny composed of organic materials.
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