SWS exam 2 Questions and Verified
Answers 100%
Know how groundwater use in Florida compares with groundwater use in the U.S. -
CORRECT ANSWER-Florida's water use is 63% groundwater, while the US uses 21%
Know the two factors that lead to a doubling of FL population between 1950 and...
SWS exam 2 Questions and Verified
Answers 100%
Know how groundwater use in Florida compares with groundwater use in the U.S. -
CORRECT ANSWER-Florida's water use is 63% groundwater, while the US uses 21%
Know the two factors that lead to a doubling of FL population between 1950 and 1970. -
CORRECT ANSWER-Air conditioning and insect/mosquito control
Know how much water is withdrawn daily in FL. - CORRECT ANSWER-• 7 billion
gallons per day
Limestone is the common name for what compound? - CORRECT ANSWER-• Calcium
carbonate (CaCO3)
Know what an ion is. - CORRECT ANSWER-• Solution species/molecule with a positive
or negative charge (results from losing/gaining electron)
Understand that - CORRECT ANSWER-ions are generally well accommodated in
water.
Understand basically how the oceans are made salty. - CORRECT ANSWER-• Water
moves across the watershed, dissolves salts and minerals which are ultimately
delivered to the ocean and concentrated by evaporation
Understand what is meant by "precipitation" and how it applies to limestone formation. -
CORRECT ANSWER-• It is the opposite of dissolution/when two or more compatible
ions become sufficiently concentrated they will reform the solid
Know the dominant mechanism by which limestone formations are made. - CORRECT
ANSWER-• Calcification: induced precipitation of calcium carbonate by organisms that
exploit carbonate dissolved in seawater to build their skeletons
Understand the fundamental evolution of the carbonate elements of the Florida
platform, including the time frames, the origin of the carbonates, general conditions
relative to sea levels, etc. - CORRECT ANSWER-• Occurs 150-25 mya while sea levels
are higher than current level and rocky platform is subject to carbonate
sedimentation(build up); rock>carbs(150mya)>water-bearing(50mya)>clays(25mys)
Know the time period during which the water-bearing elements of the Floridan aquifer
developed. - CORRECT ANSWER-• 50 - 25 million years ago (Middle Eocene and
Oligocene limestone)
, Understand why continental silicon-based materials did not intrude substantially on the
platform for approximately 125 mil. years and the changes that occurred that allowed
them to influence the FL platform subsequently. - CORRECT ANSWER-• Lowering of
sea levels, infilling of the Georgia Channel with sediments, rising of sea level and lack of
Suwannee Current allow silicon based sediments once suspended in ocean and rivers
settle over peninsula
Understand how the Floridian aquifer is confined. - CORRECT ANSWER-• It is confined
below by relatively impermeable rock and confined above by clayey deposits (The
Hawthorne Formation)
Given that the Floridan is consolidated, understand how it is made porous and able to
contain and transmit water. - CORRECT ANSWER-• The limestone is made permeable
by acid dissolution, resulting in Karst landscapes
Know that - CORRECT ANSWER-Florida's principal aquifer system is confined and
consolidated.
Know what Karst landscapes are and their general features. Why does FL have
extensive areas of karst? - CORRECT ANSWER-• Created by limestone erosion,
characterized by sinkholes, springs, depressions, lakes; Florida has these because it's
limestone
Understand the 3 basic sinkhole types, the materials overlying the carbonates for each,
and how they form. - CORRECT ANSWER-• Solution: gradual, thin sandy
covering...soluble bedrock is exposed and weathered by dissolution /Cover Subsidence:
gradual, thick sands and some clays...surface water dissolves cavities /Cover Collapse:
abrupt, cohesive clays...surface materials sink into a cave and "roof" collapses
Know the most common origin of lakes in Florida. - CORRECT ANSWER-• Karst
erosion (sinkholes)
Know the two months during which the most new sinkholes are reported. - CORRECT
ANSWER-• January (freeze protection) and May (agriculture); cover collapse sinkholes
Understand how hydrologic connections are maintained between surface and
groundwater in Florida. - CORRECT ANSWER-• Lakes can serve as a source of
recharge for aquifer and are strongly controlled by aquifer water levels
Know the general geographic location in FL where the majority of aquifer recharge
takes place and why. - CORRECT ANSWER-• Central Florida, due to high elevations
Know the generalized direction of groundwater flow in Florida - CORRECT ANSWER-•
From central part of the state to the coasts
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