Deck 14: Geology and Nonrenewable Mineral Resources

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Question
What part makes up 71% of the crust?

A)oceanic crust
B)asthenosphere
C)lithosphere
D)continental crust
E)geosphere
Use Space or
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to flip the card.
Question
The zone of hot, partly melted rock that flows and can be deformed is called the

A)crust
B)asthenosphere
C)core
D)mantle
E)lithosphere
Question
Which one of the following is not one of the top five gold producing countries of the world?

A)China
B)South Africa
C)Egypt
D)Australia
E)United States
Question
Large sections of the earth's crust, called ______________, move slowly on the mantle below them.

A)asthenosphere
B)mantle
C)tectonic plates
D)core
E)oceanic ridges
Question
The severity of an earthquake is a measure of its seismic waves, and is called

A)epicenter
B)focus
C)magnitude
D)ridges
E)valleys
Question
The physical, chemical, and biological activities, part of the external geologic processes driven by energy from the sun, is called?

A)decomposition
B)wind erosion
C)weathering
D)water erosion
E)glacial erosion
Question
Tectonic plates can move in opposite but parallel directions along a fracture or fault at a boundary called a

A)divergent plate boundary
B)convergent plate boundary
C)subduction zone
D)mantle fault
E)transform fault
Question
Minerals and rocks take a long time to form and are called

A)unusable resources
B)waste products
C)nonrenewable resources
D)degraded capital
E)renewable resources.
Question
The place where an earthquake begins is called its

A)start
B)focus
C)magnitude
D)epicenter
E)fault
Question
The location on the earth's surface above where an earthquake begins is called its

A)start
B)focus
C)magnitude
D)epicenter
E)fault
Question
The slowest of the earth's cyclic processes is the

A)hydrological cycle
B)carbon cycle
C)rock cycle
D)phosphorus cycle
E)nutrient cycle
Question
A series of large waves generated in the ocean by an earthquake, landslide, or volcanic activity are called

A)pipe waves
B)quake waves
C)seismic waves
D)rollers
E)tsunamis
Question
The change of rocks from one type to another type is known as

A)metamorphism
B)the rock cycle
C)petrography
D)consolidation
E)hydrogeology
Question
Limestone, when exposed to heat and pressure, becomes

A)salt
B)quartzite
C)granite
D)marble
E)bituminous coal
Question
When an oceanic plate collides with a continental plate the continental plate usually slides up and over the denser oceanic plate, pushing it down into the mantle, a process called

A)production
B)subduction
C)induction
D)convection
E)trenching
Question
Granite is what type of rock?

A)igneous
B)mineral
C)metamorphic
D)sedimentary
E)organic
Question
Although often covered by other kinds of rock, which type of rock forms most of the earth's crust?

A)igneous
B)mineral
C)metamorphic
D)sedimentary
E)organic
Question
The second largest volcanic eruption of the 20th century occurred in 1991 when which mountain erupted?

A)Mt.Pinatubo
B)Mt.McKinley
C)Mt.St.Helens
D)Mt.Everest
E)Humphrey's Peak
Question
Vibrations caused when energy accumulated over time is released, are called

A)fractures
B)seismic waves
C)glaciations
D)tsunamis
E)drift
Question
A common form of extracting gold from rock used in Australia and North America is

A)power flushing
B)cyanide heap leaching
C)sulfuric acid leaching
D)hydraulic scouring
E)yellow-cake extraction
Question
Which of the following is not a type of metallic mineral?

A)iron
B)lead
C)copper
D)aluminum
E)coal
Question
Which of the following is not one of the important, but scarce, mineral resources?

A)manganese
B)copper
C)chromium
D)cobalt
E)platinum
Question
Which of the following does mining not cause?

A)forest fires
B)water pollution
C)toxic chemical emissions
D)subsidence
E)diseases
Question
Many of the millions of miners that have moved into tropical forests and other tropical regions looking for gold use the very destructive technique known as

A)acid leaching
B)contour strip mining
C)mountain-top removal
D)area-strip mining
E)hydraulic mining
Question
Which of the following is not a part of the life cycle of a metal?

A)recycling
B)mining
C)using
D)transformation to another element
E)processing
Question
Which of the following is not a long-term harm to the environment caused by mining?

A)scarring and disruption of the land surface
B)large amounts of radioactivity
C)subsidence
D)large amounts of solid waste
E)toxic chemical releases into the atmosphere
Question
The portion of ore that does not contain the desired mineral is called

A)hazardous waste
B)spoil
C)gangue
D)tailings
E)smelt
Question
Which of the following is not one of the nations supplying most of the nonrenewable mineral resources used by modern societies.

A)China
B)Canada
C)Russia
D)United States
E)South Africa
Question
The United States subsidizes mining companies through depletion allowances that amount to ____% of their gross income from mining and processing.

A)2─4
B)4─8
C)5─10
D)5─22
E)6─33
Question
When a resource has been economically depleted, we can do all of the following, except

A)Use other supplies of the resource
B)Recycle existing supplies.
C)Waste less.
D)Use less.
E)Do without.
Question
Which of the following would most likely be used to mine coal on hilly terrain?

A)open-pit mining
B)contour mining
C)area strip mining
D)strip mining
E)mountain-top removal
Question
Which of the following is associated more with surface mining than subsurface mining?

A)It is more dangerous.
B)It is more expensive.
C)It produces less waste material.
D)It disturbs more land.
E)It causes subsidence.
Question
Waste soil and rock removed during surface mining is called

A)hazardous waste
B)gangue
C)spoil
D)tailings
E)smelt
Question
Depletion time is the time it takes to use up approximately ____% of the mineral reserves at a given rate of use.

A)30
B)50
C)60
D)70
E)80
Question
The United States, Germany, and Russia, with only 8% of the world's population, consume about ____ of the world's most widely used metals.

A)25%
B)33%
C)50%
D)67%
E)75%
Question
Which of the following is not a member of the group of nations that supply most of the nonrenewable mineral resources used by modern societies?

A)United States
B)Russia
C)South Africa
D)Germany
E)Canada
Question
If consumers paid the full market cost of mineral extraction and processing, all of the following would occur, except

A)Harmful environmental effects would be reduced.
B)Economies would collapse.
C)Recycling would increase dramatically.
D)Minerals would be replaced with less harmful substitutes.
E)Reuse would increase.
Question
Of the 20 key nonrenewable mineral resources it needs, what percentage does the U.S.import?

A)15%
B)25%
C)40%
D)80%
E)100%
Question
Nonmetallic mineral resources include all of the following except

A)phosphate
B)iron
C)gypsum
D)limestone
E)sulfate
Question
Experts are particularly concerned about four strategic metal resources that are important for the U.S.economy and military strength, and that must be imported. Which of the following is not one of those metal resources?

A)cobalt
B)manganese
C)iron
D)chromium
E)platinum
Question
In 1975, which company began a Pollution Prevention Pays program?

A)DuPont
B)BP
C)IBM
D)3M
E)Exxon
Question
Soil that forms from the weathering of volcanic lava is not very fertile.
Question
An active volcano forms where magma reaches the earth's surface through a vent or a fissure.
Question
The highest peaks and deepest valleys are on the continents.
Question
In the transportation industry, switching to high-strength plastics and composite materials strengthened by light-weight carbon and glass fibers in place of metals, have all of the following advantages, except

A)they serve as the best catalysts available
B)they cost less to produce
C)they involve less pollution by not needing painting
D)they can be molded into virtually any shape
E)they increase fuel efficiency by reducing weight
Question
Some analysts suggest we can increase supplies of some minerals by extracting lower grades of ore. Which of the following is not a factor that limits the mining of lower- grade ores?

A)increased cost of mining and processing the larger volumes of ore
B)increasing shortage of freshwater needed to mine and process ore
C)the lack of new earth-moving equipment and mining techniques
D)environmental impact of increased land disruption
E)the pollution produced during the mining and processing of ore
Question
The oceanic crust makes up less than 30% of the earth's crust.
Question
Recycling aluminum beverage cans and scrap aluminum produces ____ percent less air pollution than mining and processing aluminum ore.

A)75
B)80
C)85
D)90
E)95
Question
External geological processes tend to build up the earth's surface, including mountains and volcanoes.
Question
The mining law that governs the exploration and mining of hard rock minerals on U.S.public lands was passed into law in what year?

A)1992
B)1972
C)1952
D)1932
E)1872
Question
The advantages of using microorganisms for mining include all of the following, except

A)reduced land disturbance
B)reduced air pollution
C)faster removal of the mineral
D)reduced use of hazardous chemicals
E)reduced water pollution
Question
The Great Lakes in the United States, are the world's largest body of fresh water, and were formed when glaciers retreated after the last ice age.
Question
The continents, riding on tectonic plates, have crashed together and separated several times during the earth's history.
Question
Which of the following is true concerning the possible mining of the ocean floor?

A)Working around volcanic vents is too dangerous
B)Countries cannot come to an agreement about who owns the minerals.
C)Disturbance of the sea floor may release dangerous chemicals.
D)No one has the ability to mine the deep ocean floor.
E)Giant squid may interfere with the mining.
Question
Each year the General Mining Law of 1872 allows companies to remove at least $4 billion of hard rock minerals from public lands and pay what percentage of the value of the minerals to the U.S.?

A)13.2%
B)25%
C)2.3%
D)3.6%
E)82%
Question
Tidal waves in the open ocean can travel as fast as jet airplanes.
Question
The gold necessary for two wedding rings produces enough mining waste to weigh the same as three mid-sized cars.
Question
Major earthquakes measure from 7.0-7.9 on the Richter scale.
Question
The slowest of the earth's cyclic processes is the carbon cycle.
Question
Most earthquakes occur near the center of a tectonic plate.
Question
Magma that manages to reach the surface of the earth is called ____________________.
Question
Nanotechnology is proving to be a likely answer to the possible shortage of mineral resources, especially since it has no known disadvantages.
Question
When two continental plates collide they form ____________________.
Question
Instead of asking how we can increase the supplies of nonrenewable minerals, we should be asking how can we decrease our use and waste of such resources?
Question
Adding chemicals to remove metals from their ores is called smelting.
Question
The most commonly used nonmetallic minerals are sand and gravel.
Question
Mining operations produce one-third of all solid waste in the United States.
Question
The common mining process used in the United States and Australia uses a very toxic chemical called ____________________.
Question
Rocks can be converted from one type to another.
Question
The part of the earth's crust that makes up 71% of all the earth's crust, is called the ____________________.
Question
Reserves of minerals increase when new, profitable sources are identified, and when technologies make it profitable to extract deposits formerly considered too expensive to remove.
Question
When an oceanic plate and a continental plate collide, the continental plate rides up over the denser oceanic plate, pushing the oceanic plate down in a process called _______________.
Question
At least 1,200 miles of Appalachia's rivers and streams have been buried by mining activities in the region.
Question
If geologists identify 10,000 possible deposits of a given resource, only one will become a productive mine or well.
Question
When oceanic plates move apart, molten rock, called ____________________, flows up through the cracks formed by the movement.
Question
Minerals are considered nonrenewable resources because they take so long to form.
Question
The higher the grade of ore, the higher the environmental impact.
Question
Mining companies have not been successful in pressuring the U.S.Congress to continue the current mining law, or in keeping the royalties at the current levels.
Question
If all nations extract metal resources at the same rate as developed nations do today, there may not be enough metal to meet the demand, even with extensive recycling.
Question
Surface mining is used to extract 60% of the coal used in the United States.
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Deck 14: Geology and Nonrenewable Mineral Resources
1
What part makes up 71% of the crust?

A)oceanic crust
B)asthenosphere
C)lithosphere
D)continental crust
E)geosphere
A
2
The zone of hot, partly melted rock that flows and can be deformed is called the

A)crust
B)asthenosphere
C)core
D)mantle
E)lithosphere
B
3
Which one of the following is not one of the top five gold producing countries of the world?

A)China
B)South Africa
C)Egypt
D)Australia
E)United States
C
4
Large sections of the earth's crust, called ______________, move slowly on the mantle below them.

A)asthenosphere
B)mantle
C)tectonic plates
D)core
E)oceanic ridges
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
5
The severity of an earthquake is a measure of its seismic waves, and is called

A)epicenter
B)focus
C)magnitude
D)ridges
E)valleys
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
6
The physical, chemical, and biological activities, part of the external geologic processes driven by energy from the sun, is called?

A)decomposition
B)wind erosion
C)weathering
D)water erosion
E)glacial erosion
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
7
Tectonic plates can move in opposite but parallel directions along a fracture or fault at a boundary called a

A)divergent plate boundary
B)convergent plate boundary
C)subduction zone
D)mantle fault
E)transform fault
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
8
Minerals and rocks take a long time to form and are called

A)unusable resources
B)waste products
C)nonrenewable resources
D)degraded capital
E)renewable resources.
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
9
The place where an earthquake begins is called its

A)start
B)focus
C)magnitude
D)epicenter
E)fault
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
10
The location on the earth's surface above where an earthquake begins is called its

A)start
B)focus
C)magnitude
D)epicenter
E)fault
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
11
The slowest of the earth's cyclic processes is the

A)hydrological cycle
B)carbon cycle
C)rock cycle
D)phosphorus cycle
E)nutrient cycle
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
12
A series of large waves generated in the ocean by an earthquake, landslide, or volcanic activity are called

A)pipe waves
B)quake waves
C)seismic waves
D)rollers
E)tsunamis
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
13
The change of rocks from one type to another type is known as

A)metamorphism
B)the rock cycle
C)petrography
D)consolidation
E)hydrogeology
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
14
Limestone, when exposed to heat and pressure, becomes

A)salt
B)quartzite
C)granite
D)marble
E)bituminous coal
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
15
When an oceanic plate collides with a continental plate the continental plate usually slides up and over the denser oceanic plate, pushing it down into the mantle, a process called

A)production
B)subduction
C)induction
D)convection
E)trenching
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
16
Granite is what type of rock?

A)igneous
B)mineral
C)metamorphic
D)sedimentary
E)organic
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
17
Although often covered by other kinds of rock, which type of rock forms most of the earth's crust?

A)igneous
B)mineral
C)metamorphic
D)sedimentary
E)organic
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
18
The second largest volcanic eruption of the 20th century occurred in 1991 when which mountain erupted?

A)Mt.Pinatubo
B)Mt.McKinley
C)Mt.St.Helens
D)Mt.Everest
E)Humphrey's Peak
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
19
Vibrations caused when energy accumulated over time is released, are called

A)fractures
B)seismic waves
C)glaciations
D)tsunamis
E)drift
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
20
A common form of extracting gold from rock used in Australia and North America is

A)power flushing
B)cyanide heap leaching
C)sulfuric acid leaching
D)hydraulic scouring
E)yellow-cake extraction
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
21
Which of the following is not a type of metallic mineral?

A)iron
B)lead
C)copper
D)aluminum
E)coal
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
22
Which of the following is not one of the important, but scarce, mineral resources?

A)manganese
B)copper
C)chromium
D)cobalt
E)platinum
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
23
Which of the following does mining not cause?

A)forest fires
B)water pollution
C)toxic chemical emissions
D)subsidence
E)diseases
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
24
Many of the millions of miners that have moved into tropical forests and other tropical regions looking for gold use the very destructive technique known as

A)acid leaching
B)contour strip mining
C)mountain-top removal
D)area-strip mining
E)hydraulic mining
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
25
Which of the following is not a part of the life cycle of a metal?

A)recycling
B)mining
C)using
D)transformation to another element
E)processing
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
26
Which of the following is not a long-term harm to the environment caused by mining?

A)scarring and disruption of the land surface
B)large amounts of radioactivity
C)subsidence
D)large amounts of solid waste
E)toxic chemical releases into the atmosphere
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
27
The portion of ore that does not contain the desired mineral is called

A)hazardous waste
B)spoil
C)gangue
D)tailings
E)smelt
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
28
Which of the following is not one of the nations supplying most of the nonrenewable mineral resources used by modern societies.

A)China
B)Canada
C)Russia
D)United States
E)South Africa
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
29
The United States subsidizes mining companies through depletion allowances that amount to ____% of their gross income from mining and processing.

A)2─4
B)4─8
C)5─10
D)5─22
E)6─33
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
30
When a resource has been economically depleted, we can do all of the following, except

A)Use other supplies of the resource
B)Recycle existing supplies.
C)Waste less.
D)Use less.
E)Do without.
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
31
Which of the following would most likely be used to mine coal on hilly terrain?

A)open-pit mining
B)contour mining
C)area strip mining
D)strip mining
E)mountain-top removal
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
32
Which of the following is associated more with surface mining than subsurface mining?

A)It is more dangerous.
B)It is more expensive.
C)It produces less waste material.
D)It disturbs more land.
E)It causes subsidence.
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
33
Waste soil and rock removed during surface mining is called

A)hazardous waste
B)gangue
C)spoil
D)tailings
E)smelt
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
34
Depletion time is the time it takes to use up approximately ____% of the mineral reserves at a given rate of use.

A)30
B)50
C)60
D)70
E)80
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
35
The United States, Germany, and Russia, with only 8% of the world's population, consume about ____ of the world's most widely used metals.

A)25%
B)33%
C)50%
D)67%
E)75%
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
36
Which of the following is not a member of the group of nations that supply most of the nonrenewable mineral resources used by modern societies?

A)United States
B)Russia
C)South Africa
D)Germany
E)Canada
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
37
If consumers paid the full market cost of mineral extraction and processing, all of the following would occur, except

A)Harmful environmental effects would be reduced.
B)Economies would collapse.
C)Recycling would increase dramatically.
D)Minerals would be replaced with less harmful substitutes.
E)Reuse would increase.
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
38
Of the 20 key nonrenewable mineral resources it needs, what percentage does the U.S.import?

A)15%
B)25%
C)40%
D)80%
E)100%
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
39
Nonmetallic mineral resources include all of the following except

A)phosphate
B)iron
C)gypsum
D)limestone
E)sulfate
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
40
Experts are particularly concerned about four strategic metal resources that are important for the U.S.economy and military strength, and that must be imported. Which of the following is not one of those metal resources?

A)cobalt
B)manganese
C)iron
D)chromium
E)platinum
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
41
In 1975, which company began a Pollution Prevention Pays program?

A)DuPont
B)BP
C)IBM
D)3M
E)Exxon
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
42
Soil that forms from the weathering of volcanic lava is not very fertile.
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
43
An active volcano forms where magma reaches the earth's surface through a vent or a fissure.
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
44
The highest peaks and deepest valleys are on the continents.
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
45
In the transportation industry, switching to high-strength plastics and composite materials strengthened by light-weight carbon and glass fibers in place of metals, have all of the following advantages, except

A)they serve as the best catalysts available
B)they cost less to produce
C)they involve less pollution by not needing painting
D)they can be molded into virtually any shape
E)they increase fuel efficiency by reducing weight
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
46
Some analysts suggest we can increase supplies of some minerals by extracting lower grades of ore. Which of the following is not a factor that limits the mining of lower- grade ores?

A)increased cost of mining and processing the larger volumes of ore
B)increasing shortage of freshwater needed to mine and process ore
C)the lack of new earth-moving equipment and mining techniques
D)environmental impact of increased land disruption
E)the pollution produced during the mining and processing of ore
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
47
The oceanic crust makes up less than 30% of the earth's crust.
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
48
Recycling aluminum beverage cans and scrap aluminum produces ____ percent less air pollution than mining and processing aluminum ore.

A)75
B)80
C)85
D)90
E)95
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
49
External geological processes tend to build up the earth's surface, including mountains and volcanoes.
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
50
The mining law that governs the exploration and mining of hard rock minerals on U.S.public lands was passed into law in what year?

A)1992
B)1972
C)1952
D)1932
E)1872
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
51
The advantages of using microorganisms for mining include all of the following, except

A)reduced land disturbance
B)reduced air pollution
C)faster removal of the mineral
D)reduced use of hazardous chemicals
E)reduced water pollution
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
52
The Great Lakes in the United States, are the world's largest body of fresh water, and were formed when glaciers retreated after the last ice age.
Unlock Deck
Unlock for access to all 115 flashcards in this deck.
Unlock Deck
k this deck
53
The continents, riding on tectonic plates, have crashed together and separated several times during the earth's history.
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54
Which of the following is true concerning the possible mining of the ocean floor?

A)Working around volcanic vents is too dangerous
B)Countries cannot come to an agreement about who owns the minerals.
C)Disturbance of the sea floor may release dangerous chemicals.
D)No one has the ability to mine the deep ocean floor.
E)Giant squid may interfere with the mining.
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55
Each year the General Mining Law of 1872 allows companies to remove at least $4 billion of hard rock minerals from public lands and pay what percentage of the value of the minerals to the U.S.?

A)13.2%
B)25%
C)2.3%
D)3.6%
E)82%
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56
Tidal waves in the open ocean can travel as fast as jet airplanes.
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57
The gold necessary for two wedding rings produces enough mining waste to weigh the same as three mid-sized cars.
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58
Major earthquakes measure from 7.0-7.9 on the Richter scale.
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59
The slowest of the earth's cyclic processes is the carbon cycle.
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60
Most earthquakes occur near the center of a tectonic plate.
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61
Magma that manages to reach the surface of the earth is called ____________________.
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62
Nanotechnology is proving to be a likely answer to the possible shortage of mineral resources, especially since it has no known disadvantages.
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63
When two continental plates collide they form ____________________.
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64
Instead of asking how we can increase the supplies of nonrenewable minerals, we should be asking how can we decrease our use and waste of such resources?
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65
Adding chemicals to remove metals from their ores is called smelting.
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66
The most commonly used nonmetallic minerals are sand and gravel.
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67
Mining operations produce one-third of all solid waste in the United States.
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68
The common mining process used in the United States and Australia uses a very toxic chemical called ____________________.
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69
Rocks can be converted from one type to another.
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70
The part of the earth's crust that makes up 71% of all the earth's crust, is called the ____________________.
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71
Reserves of minerals increase when new, profitable sources are identified, and when technologies make it profitable to extract deposits formerly considered too expensive to remove.
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72
When an oceanic plate and a continental plate collide, the continental plate rides up over the denser oceanic plate, pushing the oceanic plate down in a process called _______________.
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73
At least 1,200 miles of Appalachia's rivers and streams have been buried by mining activities in the region.
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74
If geologists identify 10,000 possible deposits of a given resource, only one will become a productive mine or well.
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75
When oceanic plates move apart, molten rock, called ____________________, flows up through the cracks formed by the movement.
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76
Minerals are considered nonrenewable resources because they take so long to form.
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77
The higher the grade of ore, the higher the environmental impact.
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78
Mining companies have not been successful in pressuring the U.S.Congress to continue the current mining law, or in keeping the royalties at the current levels.
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79
If all nations extract metal resources at the same rate as developed nations do today, there may not be enough metal to meet the demand, even with extensive recycling.
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80
Surface mining is used to extract 60% of the coal used in the United States.
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