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20 True/False questions

  1. An artesian well is one in which ________.boundary between the aerated zone above and saturated zone below

          

  2. What force pushes groundwater from pore to pore below the water table?a horizontal aquitard above the regional water table lies below an aquifer

          

  3. After ice sheets and glaciers, ________ contain(s) the next highest percentage of the Earth's freshwater.groundwater

          

  4. Which common, rock-forming mineral or mineral group is most readily dissolved by groundwater?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.

          

  5. ________ is the volume of voids or open space in a rock or unconsolidated material.High porosity and high permeability

          

  6. The water table is ________.lies above the water table

          

  7. ________ are characteristics found in all good aquifers.High porosity and high permeability

          

  8. A stream is said to be perennial and effluent when ________.a horizontal aquitard above the regional water table lies below an aquifer

          

  9. A disappearing (sinking) creek is ________.a boundary between saturated rock below and unsaturated rock above

          

  10. Which one of the following concerning stalactites and stalagmites is not true?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.

          

  11. Where are the most extensive geothermal features in the world?Yellowstone National Park, U. S

          

  12. An unconfined water table is the ________.a boundary between saturated rock below and unsaturated rock above

          

  13. Which of the following best describes how geysers erupt?Stalagmites form on the floors of caves below the water table.

          

  14. ________ are specific features of karst topography.Streams flowing into depressions and continuing underground

          

  15. A perched water table develops when ________.boundary between the aerated zone above and saturated zone below

          

  16. A ________ is the icicle-like speleothem that grows down from the roof of a cavern.Streams flowing into depressions and continuing underground

          

  17. The aerated zone ________.lies above the water table

          

  18. The term karst topography was first used in ________.a boundary between saturated rock below and unsaturated rock above

          

  19. ________ controls the ease (or difficulty) of groundwater transmission through a porous material.High porosity and high permeability

          

  20. The hot spring deposits at Mammoth Hot Springs, Yellowstone National Park, are travertine. What rock probably lies somewhere beneath the hot springs?limestone