Minerals and Mining Answers

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1
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Which type of mining is likely the least harmful to the environment?

A
surface mining
B
placer mining
C
subsurface mining
D
none of the above
2
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Reclamation restores an environment affected by mining to a state where it can sustain its ecosystem.

A
T
B
F
3

What is most likely to happen to an abandoned strip mine over time?

A
The strip mine is likely to completely recover over time.
B
The strip mine is likely to remain exactly as it is left when abandoned.
C
The strip is likely to partly recover, but never return to its original state.
D
The strip mine is likely to become a lake.
4

What is the most likely consequence of open pit mining on plant life?

A
a dramatic reduction in the variety of plant species
B
an increase in the number of plant species
C
the complete loss of plant life in the area occupied by the surface mine
D
a temporary decrease in plant populations
5

A mineral is a naturally occurring solid with a regular, repeating structure.

A
T
B
F
6

Which of the following is a long-term consequence of mining on the Earth?

A
erosion
B
an open pit
C
sedimentation
D
all of the above
7

Mining has only short-term effects on the Earth.

A
T
B
F
8

What are the two types of minerals?

A
industrial and environmental
B
valuable and invaluable
C
metallic and nonmetallic
D
important and unimportant
9

Which of the following methods of extraction is the most damaging to the environment?

A
surface mining
B
subsurface mining
C
placer mining
D
none of the above
10

Which of the following readings is used to determine the availability of minerals?

A
radioactivity
B
magnetism
C
gravity
D
all of the above

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