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20 Matching questions

  1. A perched water table develops when ________.
  2. A stream is said to be perennial and effluent when ________.
  3. A disappearing (sinking) creek is ________.
  4. After ice sheets and glaciers, ________ contain(s) the next highest percentage of the Earth's freshwater.
  5. The water table is ________.
  6. Which of the following best describes how geysers erupt?
  7. Which one of the following concerning stalactites and stalagmites is not true?
  8. A ________ is the icicle-like speleothem that grows down from the roof of a cavern.
  9. An artesian well is one in which ________.
  10. An unconfined water table is the ________.
  11. Which common, rock-forming mineral or mineral group is most readily dissolved by groundwater?
  12. What force pushes groundwater from pore to pore below the water table?
  13. Where are the most extensive geothermal features in the world?
  14. The aerated zone ________.
  15. The hot spring deposits at Mammoth Hot Springs, Yellowstone National Park, are travertine. What rock probably lies somewhere beneath the hot springs?
  16. The term karst topography was first used in ________.
  17. ________ are specific features of karst topography.
  18. ________ are characteristics found in all good aquifers.
  19. ________ is the volume of voids or open space in a rock or unconsolidated material.
  20. ________ controls the ease (or difficulty) of groundwater transmission through a porous material.
  1. a lies above the water table
  2. b pressure gradient or hydraulic gradient
  3. c High porosity and high permeability
  4. d stalactite
  5. e 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.
  6. f Streams flowing into depressions and continuing underground
  7. g Yellowstone National Park, U. S
  8. h an influent stream in a karst area
  9. i calcite
  10. j groundwater
  11. k the local water table is above the channel bottom year round
  12. l a horizontal aquitard above the regional water table lies below an aquifer
  13. m boundary between the aerated zone above and saturated zone below
  14. n limestone
  15. o Permeability
  16. p Porosity
  17. q the Republic of Slovenia, a province of the former Yugoslavia
  18. r a boundary between saturated rock below and unsaturated rock above
  19. s water rises above the top of the aquifer without any pumping
  20. t Stalagmites form on the floors of caves below the water table.