SWS Exam 2 study guide (questions and
answers)
In some regions of the state, groundwater flow directions have been altered by heavy
pumping of the aquifer. - CORRECT ANSWER-true
The Florida platform was dominated by carbonate deposition for approximately 125
million years. - CORR...
SWS Exam 2 study guide (questions and
answers)
In some regions of the state, groundwater flow directions have been altered by heavy
pumping of the aquifer. - CORRECT ANSWER-true
The Florida platform was dominated by carbonate deposition for approximately 125
million years. - CORRECT ANSWER-true
Most of the recharge of the Floridan occurs near the coast. - CORRECT ANSWER-false
Sinkholes are responsible for the majority of lake formation in Florida. - CORRECT
ANSWER-true
Water in the Floridan moves generally from the center of the state towards the coasts. -
CORRECT ANSWER-true
About 80% of all water withdrawals in Florida is derived from groundwater sources. -
CORRECT ANSWER-false
Springs form best where the confining unit for the aquifer is thin. - CORRECT
ANSWER-true
The principal source of carbonates for the Florida platform is from the shells of marine
invertebrates. - CORRECT ANSWER-true
The uppper confining unit for the Floridan aquifer is derived from carbonate precipitation
beginning about 25 million years ago. - CORRECT ANSWER-false
Limestone is made porous by acid dissolution of the solid rock. - CORRECT ANSWER-
true
Subsidence sinkholes generally have a thin layer of sand over the limestone. -
CORRECT ANSWER-false
Calcuim chloride is a principal component of limestone. - CORRECT ANSWER-false
Collapse sinkholes require a thick layer of clayey material over the limestone. -
CORRECT ANSWER-true
Some of the highest elevations in the peninsular part of Florida are found near the
center portion of the state. - CORRECT ANSWER-true
, Spring formation is not impacted by elevation differences in the aquifer. - CORRECT
ANSWER-false
Know the 3 basic types of Florida rivers. - CORRECT ANSWER-a. Alluvial River: a type
of river with large, well-defined watershed that carries a high sediment load and has a
large forested floodplain
b. Blackwater river: type of river that drains pine flatwoods and cypress swamps and
has dark, stained waters from decomposing plant material
c. Spring-Fed River: type of river with cool, clear water issuing from springs
Know why river flow in Florida generally is very slow. - CORRECT ANSWER-River flow
being slow is sluggish due to gravity because of the differences in the elevation around
the state
Know what a river gradient is. - CORRECT ANSWER-Driving force for river flow or
difference in elevation divided by the length
Know the 3 basic features of Florida lakes. - CORRECT ANSWER-Small, shallow and
warm
Know the difference between euphotic and disphotic zones in lakes. - CORRECT
ANSWER-a. Euphotic: light sufficient for photosynthesis
b. Dysphotic: line insufficient for photosynthesis
Know the #1 source of lake formation in Florida. - CORRECT ANSWER-sinkholes
Okeechobee is what type of lake? - CORRECT ANSWER-ancient depression lake
Know how groundwater use in Florida compares with groundwater use in the U.S. -
CORRECT ANSWER-Florida has 63% of groundwater withdrawals while the U.S. has
21%
Know the factors that lead to a doubling of FL population between 1950 and 1970. -
CORRECT ANSWER-Post war era, mosquito control, air conditioning
Know how much water is withdrawn daily in FL. - CORRECT ANSWER-7 billion gallons
Limestone is the common name for what compound? - CORRECT ANSWER-calcium
carbonate
Understand how the oceans are made salty. - CORRECT ANSWER-When water moves
across the watershed, salts/minerals are dissolved; dissolved salts are then delivered to
oceans and then evaporation makes it concentrated.....DISSOLUTION
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