Question 1

A hot spot is interpreted to have formed from:

Accepted Answer

A) extreme heating of the seas near the equator 
B) abundant magma produced within a subduction zone 
C) abundant magma formed within a typical mid-ocean ridge 
D) a rising plume of hot mantle material 
A) extreme heating of the seas near the equator 
B) abundant magma produced within a subduction zone 
C) abundant magma formed within a typical mid-ocean ridge 
D) a rising plume of hot mantle material D

Question 2

Which of the magma systems shown is most likely to include felsic or intermediate magmas?

Accepted Answer

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

Question 3

The main process that happens during the alpha type of radioactive decay is:

Accepted Answer

A) an electron is given off 
B) an electron is absorbed and turned into a neutron 
C) an atom splits into two pieces 
D) an alpha particle combines with a small atom to make a larger one 
A) an electron is given off 
B) an electron is absorbed and turned into a neutron 
C) an atom splits into two pieces 
D) an alpha particle combines with a small atom to make a larger one C

Question 4

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 5

Which of the letters shown on this figure would most likely have magma related to subduction?

Accepted Answer

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

Question 6

Which of the following is the best example of heat transfer by conduction?

Accepted Answer

A) newly created lithosphere loses heat to adjacent rocks 
B) water flows in a circular path in a pan 
C) a burner gives heat through the air without touching the object 
D) seawater is drawn into a mid-ocean ridge 
A) newly created lithosphere loses heat to adjacent rocks 
B) water flows in a circular path in a pan 
C) a burner gives heat through the air without touching the object 
D) seawater is drawn into a mid-ocean ridge

Question 7

The igneous rocks shown in this photograph are forming:

Accepted Answer

A) a dike 
B) an irregular pluton 
C) a volcanic neck 
D) columnar joints 
A) a dike 
B) an irregular pluton 
C) a volcanic neck 
D) columnar joints

Question 8

Which of the following factors helps magma rise toward Earth's surface?

Accepted Answer

A) pressure decreases with increasing depth 
B) magma is more dense and therefore tougher than the surrounding solid rocks 
C) gas bubbles generally form at great depth and drive magma upward 
D) none of these 
A) pressure decreases with increasing depth 
B) magma is more dense and therefore tougher than the surrounding solid rocks 
C) gas bubbles generally form at great depth and drive magma upward 
D) none of these

Question 9

Which of the following was NOT involved in forming magmas of the main batholith?

Accepted Answer

A) subduction beneath western North America 
B) water that caused partial melting of hot mantle 
C) partial melting of continental crust 
D) solidification of magma below the surface 
E) recent normal faulting along the east side of the batholith 
A) subduction beneath western North America 
B) water that caused partial melting of hot mantle 
C) partial melting of continental crust 
D) solidification of magma below the surface 
E) recent normal faulting along the east side of the batholith

Question 10

What texture is displayed by the igneous rock in this photograph?

Accepted Answer

A) vesicles 
B) breccia 
C) porphyritic 
D) glassy 
E) none of these 
A) vesicles 
B) breccia 
C) porphyritic 
D) glassy 
E) none of these

Question 11

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 12

Which of the letters shown on this figure would most likely have magmas related to a hot spot?

Accepted Answer

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

Question 13

What texture is displayed by the igneous rock in this photograph?

Accepted Answer

A) vesicles 
B) breccia 
C) porphyritic 
D) glassy 
E) none of these 
A) vesicles 
B) breccia 
C) porphyritic 
D) glassy 
E) none of these

Question 14

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 15

A volcanic breccia 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 16

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 17

Which are important ways that magma can raise through the crust?

Accepted Answer

A) through fractures that can form dikes 
B) pieces of the wall rocks that break off and provide space 
C) tectonic forces can help open pathways 
D) magma is hotter and less dense than its surrounding 
E) all of these 
A) through fractures that can form dikes 
B) pieces of the wall rocks that break off and provide space 
C) tectonic forces can help open pathways 
D) magma is hotter and less dense than its surrounding 
E) all of these

Question 18

Which of the following is NOT a way that magma can lose heat to begin solidifying?

Accepted Answer

A) conduction to surrounding solid rocks 
B) loss of thermal energy to the air and water 
C) water that is heated and circulated near the magma 
D) an increase in the rate of radioactive decay 
A) conduction to surrounding solid rocks 
B) loss of thermal energy to the air and water 
C) water that is heated and circulated near the magma 
D) an increase in the rate of radioactive decay

Question 19

What does this texture indicate about the formation of this rock?

Accepted Answer

A) It formed from an explosive pyroclastic eruption. 
B) The rock solidified at great depth. 
C) The magma formed some crystals before rising closer to the surface and solidifying. 
D) The magma had abundant dissolved gas. 
A) It formed from an explosive pyroclastic eruption. 
B) The rock solidified at great depth. 
C) The magma formed some crystals before rising closer to the surface and solidifying. 
D) The magma had abundant dissolved gas.

Question 20

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

A hot spot is interpreted to have formed from:

Which of the magma systems shown is most likely to include felsic or intermediate magmas?

The main process that happens during the alpha type of radioactive decay is:

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

Which of the letters shown on this figure would most likely have magma related to subduction?

Which of the following is the best example of heat transfer by conduction?

The igneous rocks shown in this photograph are forming:

Which of the following factors helps magma rise toward Earth's surface?

Which of the following was NOT involved in forming magmas of the main batholith?

What texture is displayed by the igneous rock in this photograph?

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

Which of the letters shown on this figure would most likely have magmas related to a hot spot?

What texture is displayed by the igneous rock in this photograph?

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

A volcanic breccia texture indicates that:

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

Which are important ways that magma can raise through the crust?

Which of the following is NOT a way that magma can lose heat to begin solidifying?

What does this texture indicate about the formation of this rock?

The igneous feature shown in this figure is a:

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Exam 5: Igneous Environments

A hot spot is interpreted to have formed from:

Which of the magma systems shown is most likely to include felsic or intermediate magmas?

The main process that happens during the alpha type of radioactive decay is:

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

Which of the letters shown on this figure would most likely have magma related to subduction?

Which of the following is the best example of heat transfer by conduction?

The igneous rocks shown in this photograph are forming:

Which of the following factors helps magma rise toward Earth's surface?

Which of the following was NOT involved in forming magmas of the main batholith?

What texture is displayed by the igneous rock in this photograph?

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

Which of the letters shown on this figure would most likely have magmas related to a hot spot?

What texture is displayed by the igneous rock in this photograph?

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

A volcanic breccia texture indicates that:

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

Which are important ways that magma can raise through the crust?

Which of the following is NOT a way that magma can lose heat to begin solidifying?

What does this texture indicate about the formation of this rock?

The igneous feature shown in this figure is a:

The Nature of Geology

Investigating Geologic Questions

Plate Tectonics

Earth Materials

Volcanoes and Volcanic Hazards

Sedimentary Environments and Rocks

Deformation and Metamorphism

Geologic Time

The Seafloor and Continental Margins

Mountains, basins, and Continents

Earthquakes and Earths Interior

Climate, weather, and Their Influences on Geology

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