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A) an aquitard below the regional water table lies above a horizontal aquifer
B) an aquifer below the regional water table is underlain by a horizontal aquitard
C) a horizontal aquitard above the regional water table lies below an aquifer
D) an aquifer above the regional water table is overlain by a horizontal aquitard
F) All of the above
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A) the channel bottom is above the local water table
B) the local water table is above the channel bottom
D) undefined
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A) The water table must be 40 feet above sea level to keep the salty water in the aquifer below sea level.
B) Any salty water in the aquifer will rise if the water table is lowered by pumping.
C) Wells drilled below sea level will produce only saline water.
D) Pumping freshwater from one, large capacity well is much less likely to cause salty water to rise in the aquifer than pumping from several, widely spaced, smaller capacity wells.
F) A) and D)
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A) boundary between the saturated zone above and partly saturated zone below
B) boundary between the aerated and unsaturated zones
C) bottom boundary surface of the saturated zone above an aquitard
D) boundary between the aerated zone above and saturated zone below
F) None of the above
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A) lies above the water table
B) lies below the capillary fringe zone
C) is a well- oxygenated, shallow aquifer
D) pore spaces are filled with water
F) B) and C)
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A) Fractured granite
B) Limestone with solution channels and caverns
C) Well- sorted, coarse gravel
D) Slightly clayey sand
F) None of the above
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A) shale
B) limestone
C) rhyolite
D) quartzite
F) All of the above
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A) unconsolidated medium- grained sand; sand grains are coated with clay minerals
B) limestone; numerous solution channels and fractures widened by dissolution
C) lakebeds; unconsolidated very fine- grained sand and silt
D) sandstone; well- cemented with a few, widely spaced vertical fractures
F) A) and C)
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A) Water below the water table slowly boils in a vertical crack or natural conduit, causing a plume of condensed water vapor to rise above the vent.
B) Water suddenly boils in disconnected voids and cracks above the water table, causing the aquifer to explosively fragment.
C) 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.
D) Water slowly boils in a network of vertical cracks above the water table, sending up a plume of steam and hot water.
F) A) and B)
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Evidence of karst topography: ...View Answer
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A) Streams flowing into depressions and continuing underground
B) Numerous artesian wells in a given area
C) Perennial, influent streams fed by large springs
D) Perched water table springs on hillsides
F) A) and C)
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A) The well penetrates an aquifer overlain by an aquitard.
B) The well penetrates an aquifer underlain by an impermeable bed.
C) When the well penetrates the aquifer, the water rises to the bottom of the aquitard above the aquifer.
D) The aquifer is generally inclined, and it is saturated to an elevation above the point where the well penetrates the aquifer.
F) None of the above
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