name____ date____ per____ chemmatters article \sinkholes—chemistry goes deep\ phys sci ch. 9\n1. central…

name____ date____ per____ chemmatters article \sinkholes—chemistry goes deep\ phys sci ch. 9\n1. central florida is the ____ capital of the world.\n2. about ____ of the land in the u.s. is prone to sinkhole formation.\n3. one of the largest sinkholes is in ____, and it is bigger than the whole state of ____.\n4. a major cause of sinkholes is ____ ____, like mining or ____, which removes underlying soil.\n5. another cause of sinkholes is ____ above the soil, like from retention ponds or lakes.\n6. the type of terrain where sinkholes are most commonly found has underlying ____ bedrock usually made of ____.\n7. the state of florida is sitting on top of a giant slab of limestone, which is made of caco₃, or ____ ____, that comes from leftover corals and seashells.\n8. ____, ____, ____, and ____ are examples of substances made of calcium carbonate.\n9. any substance made of caco₃ will react with an ____, forming water, co₂, and calcium acetate.\n10. when rain falls through the atmosphere and reacts with co₂, it forms ____ ____ with a ph of about ____.\n11. soft drinks contain carbonic acid, which is a ____ acid and not harmful to drink.\n12. sinkholes occur when acidic rainwater has eaten away so much of the underlying ____ ____ beneath the soil that the ground ____.\n13. ____ areas with more ____ result in more carbonic acid leaching into the soil.\n14. florida unsurprisingly leads the us in number of sinkholes because it has both ____ ____ and ____ ____.\n15. another contributing factor to groundwater being acidic is decaying ____ materials.\n16. some outdoor signs of potential sinkholes are dying ____, sudden appearance of ____ water, muddy ____ water, ____ in the ground, and ____ or fence posts that are tilting.\n17. signs of sinkholes around the house would include crumbling ____ or doors or ____ that don’t ____ properly.\n18. radar, which is electromagnetic radiation from the ____ portion of the spectrum, is the technology used to confirm the presence of sinkholes underground.

name____ date____ per____ chemmatters article \sinkholes—chemistry goes deep\ phys sci ch. 9\n1. central florida is the ____ capital of the world.\n2. about ____ of the land in the u.s. is prone to sinkhole formation.\n3. one of the largest sinkholes is in ____, and it is bigger than the whole state of ____.\n4. a major cause of sinkholes is ____ ____, like mining or ____, which removes underlying soil.\n5. another cause of sinkholes is ____ above the soil, like from retention ponds or lakes.\n6. the type of terrain where sinkholes are most commonly found has underlying ____ bedrock usually made of ____.\n7. the state of florida is sitting on top of a giant slab of limestone, which is made of caco₃, or ____ ____, that comes from leftover corals and seashells.\n8. ____, ____, ____, and ____ are examples of substances made of calcium carbonate.\n9. any substance made of caco₃ will react with an ____, forming water, co₂, and calcium acetate.\n10. when rain falls through the atmosphere and reacts with co₂, it forms ____ ____ with a ph of about ____.\n11. soft drinks contain carbonic acid, which is a ____ acid and not harmful to drink.\n12. sinkholes occur when acidic rainwater has eaten away so much of the underlying ____ ____ beneath the soil that the ground ____.\n13. ____ areas with more ____ result in more carbonic acid leaching into the soil.\n14. florida unsurprisingly leads the us in number of sinkholes because it has both ____ ____ and ____ ____.\n15. another contributing factor to groundwater being acidic is decaying ____ materials.\n16. some outdoor signs of potential sinkholes are dying ____, sudden appearance of ____ water, muddy ____ water, ____ in the ground, and ____ or fence posts that are tilting.\n17. signs of sinkholes around the house would include crumbling ____ or doors or ____ that don’t ____ properly.\n18. radar, which is electromagnetic radiation from the ____ portion of the spectrum, is the technology used to confirm the presence of sinkholes underground.

Answer

Answer:

  1. sinkhole
  2. 20%
  3. China; Rhode Island
  4. human - activity; construction
  5. water pressure
  6. carbonate; limestone
  7. limestone; calcium carbonate
  8. Marble; chalk; eggshells; seashells
  9. acid
  10. carbonic acid; 5.6
  11. weak
  12. limestone; collapses
  13. Wet; rainfall
  14. carbonate rock; acidic groundwater
  15. organic
  16. vegetation; puddles; well; cracks; trees
  17. walls; windows; close
  18. microwave

Brief Explanations:

These answers are based on knowledge about sinkhole formation, geology, and chemistry as described in the "Sinkholes—Chemistry Goes Deep" article. Topics include the causes of sinkholes (human - activity, water pressure, acidic water), the geology of areas prone to sinkholes (carbonate rock like limestone), chemical reactions (calcium carbonate reacting with acid), and signs of sinkholes (both outdoor and around the house). Radar from the microwave portion of the spectrum is used to detect underground sinkholes.