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quiz 11 geol
| Question | Answer |
|---|---|
| Permeable rock strata or sediment that transmit groundwater freely are called ________. | aquifers |
| ________ would have the largest capacity to naturally remove sewage pollutants | slightly clayey sand |
| When water is pumped from a well, a depression is often produced in the water table. Such a depression is a(n) _______ | cone of depression |
| Which one of the following concerning artesian wells is NOT true | When the well penetrates the aquifer, the water rises to the bottom of the aquitard above the aquifer. |
| Which of the following is associated with areas of karst topography? sinkholes - soluble rock - caverns | all of these |
| A ________ is the icicle-like speleothem that grows down from the roof of a cavern | stalactite |
| ________ is the volume of voids or open space in a rock or unconsolidated material. | Porosity |
| The water table is ________. | a boundary between saturated rock below and unsaturated rock above |
| An artesian well is one in which ________. | water rises above the top of the aquifer without any pumping |
| The term karst topography was first used in ________. | the Republic of Slovenia, a province of the former Yugoslavia |
| Hot springs are most numerous in which region of the United States | West |
| Which of the following best describes how geysers erupt? | With a slight reduction in pressure, water in a saturated, natural conduit suddenly boils, sending a plume of steam and hot water into the air above the vent |
| Caves most commonly form in ________ | limestone |
| Porosity is a measure of the volume of open space in rocks and unconsolidated geological materials such as alluvium and soils | T |
| As its name implies, the water table is always very level (flat). | F |
| Most caves and caverns originate by solution of limestone | T |
| For a well to be characterized as being artesian, water must flow freely at the surface | F |
| Most hot springs in the United States are located in the southeast, especially Georgia | F |
| The formation of stalactites and stalagmites occurs in the zone of saturation | F |
| Lowering of the water table around a pumping well results in a cone of infiltration | F |
| One environmental problem associated with groundwater is land subsidence caused by withdrawal | T |
| Karst topography is most commonly associated with areas underlain by massive sandstone strata. | F |
| The source of heat for most hot springs is hot igneous material beneath the surface | T |
| Sinkholes are actively forming in portions of the southeastern United States | T |
Created by:
yphan