Question 1

Which number on this figure indicates heating by conduction?

Accepted Answer

A)  1, direct contact between the burner and the pan 
B)  2, heating by thermal radiation through the air 
C)  3, heated water expands and rises to the top of the pan and then cools and flows back down 
D)  4, moving a pan of water away from the stove 
A)  1, direct contact between the burner and the pan 
B)  2, heating by thermal radiation through the air 
C)  3, heated water expands and rises to the top of the pan and then cools and flows back down 
D)  4, moving a pan of water away from the stove

Question 2

The main way water gets into a subduction zone is by:

Accepted Answer

A)  heating of the overlying continental crust 
B)  a decrease in pressure that causes melting 
C)  rain associated with eruptions in the island arc 
D)  seawater introduced into oceanic crust at the mid-ocean ridge, prior to subduction 
E)  all of these 
A)  heating of the overlying continental crust 
B)  a decrease in pressure that causes melting 
C)  rain associated with eruptions in the island arc 
D)  seawater introduced into oceanic crust at the mid-ocean ridge, prior to subduction 
E)  all of these

Question 3

A vesicular igneous texture indicates that:

Accepted Answer

A)  there was a lot of gas in the magma 
B)  the rock cooled quickly 
C)  the rock broke apart as it flowed 
D)  the rock cooled slowly 
E)  the ash and pumice were hot and became compacted 
A)  there was a lot of gas in the magma 
B)  the rock cooled quickly 
C)  the rock broke apart as it flowed 
D)  the rock cooled slowly 
E)  the ash and pumice were hot and became compacted

Question 4

A finely crystalline or glassy igneous texture indicates that:

Accepted Answer

A)  there was a lot of gas in the magma 
B)  the rock cooled quickly 
C)  the rock broke apart as it flowed 
D)  the rock cooled slowly 
E)  the ash and pumice were hot and became compacted 
A)  there was a lot of gas in the magma 
B)  the rock cooled quickly 
C)  the rock broke apart as it flowed 
D)  the rock cooled slowly 
E)  the ash and pumice were hot and became compacted

Question 5

The site on the accompanying figure that would most likely form a rock that is glassy with no volcanic ash is:

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 6

The main cause of melting along subduction zones is the:

Accepted Answer

A)  rise and decompression melting of mantle lithosphere 
B)  rise and decompression melting of mantle asthenosphere 
C)  melting of the subducting plate 
D)  release of water from the subducting plate 
A)  rise and decompression melting of mantle lithosphere 
B)  rise and decompression melting of mantle asthenosphere 
C)  melting of the subducting plate 
D)  release of water from the subducting plate

Question 7

Which of the following processes has added heat to Earth's interior during or after its formation?

Accepted Answer

A)  collision of asteroids and meteoroids with Earth 
B)  formation and sinking of masses of iron and nickel 
C)  radioactive decay 
D)  all of these 
A)  collision of asteroids and meteoroids with Earth 
B)  formation and sinking of masses of iron and nickel 
C)  radioactive decay 
D)  all of these

Question 8

When two plates are moving away from each other they are said to be:

Accepted Answer

A)  diverging 
B)  converging 
C)  remaining the same 
A)  diverging 
B)  converging 
C)  remaining the same

Question 9

Minerals crystallize:

Accepted Answer

A)  in the opposite order they melt 
B)  in the same order they melt 
A)  in the opposite order they melt 
B)  in the same order they melt

Question 10

Which of the following rock photographs depicts a felsic igneous rock?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 11

Which of the following is true about igneous processes along oceanic divergent boundaries as shown in this figure?

Accepted Answer

A)  Oceanic crust moves toward the ridge in a conveyor-belt manner. 
B)  Most of the mantle is molten, not solid. 
C)  Solid asthenosphere rises as plates move apart. 
D)  Magma generated in the crust drips down into the mantle. 
A)  Oceanic crust moves toward the ridge in a conveyor-belt manner. 
B)  Most of the mantle is molten, not solid. 
C)  Solid asthenosphere rises as plates move apart. 
D)  Magma generated in the crust drips down into the mantle.

Question 12

Which of the following changes in conditions indicates heating of the rock?

Accepted Answer

A)  from A to B 
B)  from B to C 
C)  from C to D 
D)  from D to A 
E)  none of these 
A)  from A to B 
B)  from B to C 
C)  from C to D 
D)  from D to A 
E)  none of these

Question 13

Most subduction-derived magma never reaches the surface. However, what is formed if this type of magma reaches oceanic crust?

Accepted Answer

A)  island arcs 
B)  mountain ranges 
C)  belts of calderas 
A)  island arcs 
B)  mountain ranges 
C)  belts of calderas

Question 14

Which of the following acts to keep a rock solid instead of melting)?

Accepted Answer

A)  an increase in temperature 
B)  an increase in the vibration within a lattice 
C)  an increase in confining pressure 
D)  none of these 
A)  an increase in temperature 
B)  an increase in the vibration within a lattice 
C)  an increase in confining pressure 
D)  none of these

Question 15

How does the addition of water cause melting?

Accepted Answer

A)  it heats the rocks 
B)  it decreases the pressure on the rocks 
C)  it increases the temperature while decreasing the pressure 
D)  it changes the location of the liquid-solid boundary 
A)  it heats the rocks 
B)  it decreases the pressure on the rocks 
C)  it increases the temperature while decreasing the pressure 
D)  it changes the location of the liquid-solid boundary

Question 16

The igneous feature shown in this figure is a:

Accepted Answer

A)  dike 
B)  sill 
C)  volcanic neck 
D)  laccolith 
A)  dike 
B)  sill 
C)  volcanic neck 
D)  laccolith

Question 17

A magma chamber:

Accepted Answer

A)  an underground body of molten rock 
B)  an above ground body of solid rock 
C)  an underground body of lava 
A)  an underground body of molten rock 
B)  an above ground body of solid rock 
C)  an underground body of lava

Question 18

Which of the letters shown on this figure would most likely have mafic basalt) magmas?

Accepted Answer

A)  A and B 
B)  A and C 
C)  B and D 
D)  D and E 
E)  C and D 
A)  A and B 
B)  A and C 
C)  B and D 
D)  D and E 
E)  C and D

Question 19

Which of the following changes in conditions could represent melting of continental crust from the introduction of a mafic magma?

Accepted Answer

A)  from A to B 
B)  from A to C 
C)  from A to D 
D)  from C to B 
E)  from B to D 
A)  from A to B 
B)  from A to C 
C)  from A to D 
D)  from C to B 
E)  from B to D

Question 20

Which of the following were involved in bringing the deep batholithic rocks to the surface?

Accepted Answer

A)  uplift of the rocks over tens of millions of years 
B)  a hot spot that formed a broad continental plateau 
C)  a continent-continent collision with Australia 
D)  the recent restarting of subduction beneath the area 
A)  uplift of the rocks over tens of millions of years 
B)  a hot spot that formed a broad continental plateau 
C)  a continent-continent collision with Australia 
D)  the recent restarting of subduction beneath the area

Which number on this figure indicates heating by conduction?

The main way water gets into a subduction zone is by:

A vesicular igneous texture indicates that:

A finely crystalline or glassy igneous texture indicates that:

The site on the accompanying figure that would most likely form a rock that is glassy with no volcanic ash is:

The main cause of melting along subduction zones is the:

Which of the following processes has added heat to Earth's interior during or after its formation?

When two plates are moving away from each other they are said to be:

Minerals crystallize:

Which of the following rock photographs depicts a felsic igneous rock?

Which of the following is true about igneous processes along oceanic divergent boundaries as shown in this figure?

Which of the following changes in conditions indicates heating of the rock?

Most subduction-derived magma never reaches the surface. However, what is formed if this type of magma reaches oceanic crust?

Which of the following acts to keep a rock solid instead of melting)?

How does the addition of water cause melting?

The igneous feature shown in this figure is a:

A magma chamber:

Which of the letters shown on this figure would most likely have mafic basalt) magmas?

Which of the following changes in conditions could represent melting of continental crust from the introduction of a mafic magma?

Which of the following were involved in bringing the deep batholithic rocks to the surface?

The Nature of Geology

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Earthquakes and Earths Interior

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Exam 5: Igneous Environments

Which number on this figure indicates heating by conduction?

The main way water gets into a subduction zone is by:

A vesicular igneous texture indicates that:

A finely crystalline or glassy igneous texture indicates that:

The site on the accompanying figure that would most likely form a rock that is glassy with no volcanic ash is:

The main cause of melting along subduction zones is the:

Which of the following processes has added heat to Earth's interior during or after its formation?

When two plates are moving away from each other they are said to be:

Minerals crystallize:

Which of the following rock photographs depicts a felsic igneous rock?

Which of the following is true about igneous processes along oceanic divergent boundaries as shown in this figure?

Which of the following changes in conditions indicates heating of the rock?

Most subduction-derived magma never reaches the surface. However, what is formed if this type of magma reaches oceanic crust?

Which of the following acts to keep a rock solid instead of melting)?

How does the addition of water cause melting?

The igneous feature shown in this figure is a:

A magma chamber:

Which of the letters shown on this figure would most likely have mafic basalt) magmas?

Which of the following changes in conditions could represent melting of continental crust from the introduction of a mafic magma?

Which of the following were involved in bringing the deep batholithic rocks to the surface?

The Nature of Geology

Investigating Geologic Questions

Plate Tectonics

Earth Materials

Volcanoes and Volcanic Hazards

Sedimentary Environments

Deformation and Metamorphism

Geologic Time

Seafloor and Continental Margins

Mountains, Basins, and Continents

Earthquakes and Earths Interior

Climate and Weathering

Glaciers, Shorelines, and Changing Sea Levels

Weathering, Soil, and Unstable Slopes

Streams and Flooding

Water Resources

Energy and Mineral Resources

Geology of the Solar System

Filters