ANSWERS.
Which of the following areas would experience the most devastation after an earthquake? correct
answers a marsh-like environment that was filled with landfill in order to build a city
Strip mining, subsurface mining, and solution mining all take place in which "sphere" of the
planet? correct answers lithosphere
Tantalum is needed for mobile phones, and the Congo is a major supplier of this metal. Which of
these is true of how mining for tantalum has occurred in the Congo? correct answers Profits from
tantalum mining have helped fuel a war that has killed more than 5 million people.
Coal mining involves which two of the following mining techniques? correct answers strip
mining and subsurface mining
Tsunamis are caused by ________. correct answers the displacement of sea water by volcanoes,
earthquakes or coastal landslides
Drag each description to the appropriate bin. correct answers STRIP MINING: used to extract
resources near the surface
overburden is removed the mining site
destroys large areas of wildlife habitat
SUBSURFACE MINING: safety requires good ventilation systems
used to extract resources deep underground
one of the most dangerous occupations in the United States
BOTH: used to extract coal
generate acid drainage
Which of these leads to uncertainty in our ability to predict how long a mineral resource will
last? correct answers all of the above
The dwindling supplies of rare strategic metals such as indium, tantalum, and platinum may be
extended if we rigorously ________. correct answers recycle existing supplies
Longer projected lifetimes for scarce minerals can be achieved with all of the following,
EXCEPT: correct answers lowering prices for products using these minerals.
Most mineral resources occur __________. correct answers along the coasts
Select Physical Features. Diamonds are mined primarily at which elevation? correct answers
500-1999 meters
Coal is mined only in which country? correct answers south africa
Gold is mined only __________. correct answers along rivers or lakes
, Which of the following minerals is the least common in this region? correct answers platinum
Why is coltan such a valuable mined resource? correct answers Coltan contains tantalite, which
yields the element tantalum. Tantalum is required for microprocessors such as the ones in your
cell phone.
How is coltan generally mined? correct answers panning of the various rivers in the Congo
During the conflict in the Democratic Republic of the Congo (DR Congo), how did the
exploitation of coltan and the coltan miners harm both the environment and the people that lived
there?
Select all that apply. correct answers -Erosion exacerbated the release of toxic metals such as
mercury.
-Endangered species were hunted for food.
-The products of mining were seized from the miners.
Which of the following happened first? correct answers The Appalachian Mountains begin to
form.
Continental rifting formed which of the following? correct answers North Atlantic Ocean
Which of the following occurred about 21,000 years ago? correct answers The formation of the
ice age glaciers.
Coltan ore contains ________. correct answers tantalum
A(n) ________ is a solid aggregation of ________. correct answers rock; minerals
Earth's mantle ________. correct answers surrounds the core as a thick, elastic rock formation
At ________ plate boundaries, tectonic plates are pushed away from each other when magma
rises to the surface, creating new crust. correct answers divergent
Which of the following correctly represents the basic layers of Earth from the innermost to the
outermost? correct answers Core, mantle, and crust
If you want to avoid buying a "blood diamond," you should avoid purchasing ________. correct
answers a diamond from Sierra Leone
__________, a commonly mined energy resource, is not a mineral. correct answers coal
Heavy landscape damage and water pollution have occurred in ________ as a result of
________. correct answers Appalachia; mountaintop removal mining for coal