Question 1

The process of crystallization acts to

Accepted Answer

A)  enrich the molten magma in silica.
B)  deplete the molten magma of silica.
C)  enrich the crystallized minerals in silica.
D)  none of the above.E) A) and B)
F) None of the above

Question 2

The silicates are the largest mineral group because silicon and oxygen are

Accepted Answer

A)  the hardest elements on Earth's surface.
B)  the two most abundant elements in Earth's crust.
C)  found in the common mineral quartz.D) A) and B)
E) A) and C)

Question 3

Shield volcanoes are composed of

Accepted Answer

A)  andesitic magma.
B)  basaltic magma.
C)  granitic magma.
D)  silica-rich magma.E) A) and C)
F) C) and D)

Question 4

Which of the following rocks would be the first to weather in a humid climate? Which would be the last? Defend your answers.(a)granite (b)sandstone (c)limestone (d)halite

Accepted Answer

Halite would be the first to weather sin...

Question 5

Which minerals are the first to crystallize in a cooling magma-minerals with a lower percentage of silica or minerals with a higher percentage of silica?

Accepted Answer

Minerals w...

Question 6

By definition,an ore is a mineral rich in valuable metals.To be considered as an ore means that the

Accepted Answer

A)  metals can be economically extracted to yield a profit.
B)  metals are extremely valuable.
C)  deposit is very rich and abundant in valuable metals.
D)  metallic minerals are very abundant.E) None of the above
F) B) and D)

Question 7

The largest volcano on Earth is a

Accepted Answer

A)  shield volcano.
B)  cinder cone.
C)  composite cone.
D)  lava plateau.E) C) and D)
F) A) and B)

Question 8

A sedimentary rock can turn into an igneous rock by

Accepted Answer

A)  compaction and cementation.
B)  compaction.
C)  melting and cooling.
D)  weathering and lithification.E) C) and D)
F) A) and D)

Question 9

The process by which a single magma can generate several magmas of different compositions is

Accepted Answer

A)  partial melting.
B)  partial crystallization.
C)  fractional crystallization.
D)  partial distillation.E) C) and D)
F) B) and C)

Question 10

Our Earth has many resources,but they are not unlimited.In the case of abundant metals,supply will most often meet demand.However,problems can occur when

Accepted Answer

A)  there is a shortage of ores that can be mined at a reasonable cost.
B)  high grade ores are depleted and low-grade ores need to be mined.
C)  transport and processing costs override economic feasibility.
D)  all of the above.E) B) and D)
F) A) and B)

Question 11

In a sedimentary rock,small rounded particles indicate a

Accepted Answer

A)  long distance and long travel time.
B)  short distance and short travel time.
C)  long distance and short travel time.
D)  short distance and long travel time.E) A) and B)
F) A) and C)

Question 12

In a cooling magma,which minerals are the last to crystallize?

Accepted Answer

Minerals with low me...

Question 13

The property of a mineral to break along planes of weakness is referred to as

Accepted Answer

A)  cleavage.
B)  hardness.
C)  fracture.
D)  bond strength.E) A) and D)
F) C) and D)

Question 14

Volcanic rocks form from

Accepted Answer

A)  the eruption of viscous magma.
B)  partial melting of basalt.
C)  solidification of lava.D) All of the above
E) A) and B)

Question 15

Of the five rock-forming mineral groups-the silicates,carbonates,oxides,sulfides,and sulfates-which two form economically important ores?

Accepted Answer

A)  silicates and carbonates
B)  carbonates and oxides
C)  oxides and sulfides
D)  sulfides and sulfatesE) B) and D)
F) A) and C)

Question 16

Foliation in metamorphic rocks is due to directed stress,which causes elongated minerals to orient themselves

Accepted Answer

A)  in parallel planes with the face of each plane parallel to the direction of maximum stress.
B)  in alignment.
C)  so that smaller crystals precede larger crystals.
D)  in parallel planes perpendicular to the direction of maximum stress.E) B) and C)
F) B) and D)

Question 17

The most common rock forming minerals are composed of predominantly eight elements.These minerals are the

Accepted Answer

A)  silicates,carbonates,oxides,sulfides,and sulfates.
B)  silicates,sulfides,and oxides.
C)  silicons,borates,oxides,sulfides,and carbonates.
D)  sulfates,oxides,and carbonates.E) C) and D)
F) A) and D)

Question 18

The two most abundant elements in Earth's crust are

Accepted Answer

A)  silicates and carbonates.
B)  silicon and oxygen.
C)  oxygen and aluminum.
D)  quartz and feldspar.E) B) and C)
F) A) and B)

Question 19

Does the rock cycle always follow a certain path? In other words,is it a one-way process?

Accepted Answer

No,as its name implies,the rock cycle is...

Question 20

Can metamorphism,caused solely by elevated temperature,occur without the presence of magma? Why or why not?

Accepted Answer

Yes,by burial metamorphism.As rocks are ...

Exam 20: Rocks and Minerals

Of the five rock-forming mineral groups-the silicates,carbonates,oxides,sulfides,and sulfates-which two form economically important ores?

Correct AnswerverifiedShow Answer

Does the rock cycle always follow a certain path? In other words,is it a one-way process?

Correct AnswerverifiedNo,as its name implies,the rock cycle is...View AnswerShow Answer

Our Earth has many resources,but they are not unlimited.In the case of abundant metals,supply will most often meet demand.However,problems can occur when

Correct AnswerverifiedShow Answer

In a sedimentary rock,small rounded particles indicate a

Correct AnswerverifiedShow Answer

A sedimentary rock can turn into an igneous rock by

Correct AnswerverifiedShow Answer

The silicates are the largest mineral group because silicon and oxygen are

Correct AnswerverifiedShow Answer

Shield volcanoes are composed of

Correct AnswerverifiedShow Answer

In a cooling magma,which minerals are the last to crystallize?

Correct AnswerverifiedMinerals with low me...View AnswerShow Answer

Which minerals are the first to crystallize in a cooling magma-minerals with a lower percentage of silica or minerals with a higher percentage of silica?

Correct AnswerverifiedMinerals w...View AnswerShow Answer

Volcanic rocks form from

Correct AnswerverifiedShow Answer

The most common rock forming minerals are composed of predominantly eight elements.These minerals are the

Correct AnswerverifiedShow Answer

The two most abundant elements in Earth's crust are

Correct AnswerverifiedShow Answer

The property of a mineral to break along planes of weakness is referred to as

Correct AnswerverifiedShow Answer

By definition,an ore is a mineral rich in valuable metals.To be considered as an ore means that the

Correct AnswerverifiedShow Answer

The largest volcano on Earth is a

Correct AnswerverifiedShow Answer

Which of the following rocks would be the first to weather in a humid climate? Which would be the last? Defend your answers.(a)granite (b)sandstone (c)limestone (d)halite

Correct AnswerverifiedHalite would be the first to weather sin...View AnswerShow Answer

The process of crystallization acts to

Correct AnswerverifiedShow Answer

Can metamorphism,caused solely by elevated temperature,occur without the presence of magma? Why or why not?

Correct AnswerverifiedYes,by burial metamorphism.As rocks are ...View AnswerShow Answer

The process by which a single magma can generate several magmas of different compositions is

Correct AnswerverifiedShow Answer

Foliation in metamorphic rocks is due to directed stress,which causes elongated minerals to orient themselves

Correct AnswerverifiedShow Answer

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No,as its name implies,the rock cycle is...
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Minerals with low me...
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Minerals w...
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Halite would be the first to weather sin...
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Yes,by burial metamorphism.As rocks are ...
View Answer

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Correct Answer
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