Question 1

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 sulfates 
A) silicates and carbonates 
B) carbonates and oxides 
C) oxides and sulfides 
D) sulfides and sulfates

Question 2

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

Question 3

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. 
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.

Question 4

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. 
A) partial melting. 
B) partial crystallization. 
C) fractional crystallization. 
D) partial distillation.

Question 5

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. 
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.

Question 6

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. 
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.

Question 7

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

Question 8

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 9

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. 
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.

Question 10

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. 
A) cleavage. 
B) hardness. 
C) fracture. 
D) bond strength.

Question 11

The largest volcano on Earth is a

Accepted Answer

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

Question 12

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. 
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.

Question 13

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. 
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.

Question 14

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

Question 15

Shield volcanoes are composed of

Accepted Answer

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

Question 16

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

Question 17

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 18

Volcanic rocks form from

Accepted Answer

A) the eruption of viscous magma. 
B) partial melting of basalt. 
C) solidification of lava. 
A) the eruption of viscous magma. 
B) partial melting of basalt. 
C) solidification of lava.

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

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

Accepted Answer

Minerals with low me

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?

A sedimentary rock can turn into an igneous rock by

The process of crystallization acts to

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

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

In a sedimentary rock,small rounded particles indicate a

The two most abundant elements in Earth's crust are

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

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

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

The largest volcano on Earth is a

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

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

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

Shield volcanoes are composed of

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

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?

Volcanic rocks form from

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

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

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

How Atoms Bond and Molecules Attract

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Time - Reading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: The Nature of Science

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