Question 1

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

Accepted Answer

A)  a pan is placed directly on a burner
B)  water within the pan flows in a circular path
C)  a burner gives heat through the air without touching the object
D)  seawater is drawn into a mid-ocean ridgeE) A) and D)
F) None of the above

Question 2

The site on the accompanying figure that would mostly likely form a rock that is fine grained (has small crystals but is not glassy) is:

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  EF) A) and C)
G) B) and D)

Question 3

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 theseE) A) and C)
F) A) and B)

Question 4

Which of the letters shown on this figure would most likely include some intermediate to felsic magmas?

Accepted Answer

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

Question 5

The liquid-solid boundary on this graph slopes down and to the right because:

Accepted Answer

A)  temperature increases down in the earth
B)  temperature decreases down in the earth
C)  pressure increases down in the earth
D)  none of theseE) All of the above
F) A) and B)

Question 6

Which of the following rock types does NOT involve dissolved gas in the magma?

Accepted Answer

A)  tuff
B)  pumice
C)  scoria
D)  diorite
E)  vesicular basaltF) A) and C)
G) A) and B)

Question 7

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

Accepted Answer

A)  vesicles
B)  breccia
C)  porphyritic
D)  glassy
E)  none of theseF) C) and D)
G) B) and E)

Question 8

Which letter in this classification table indicates the position of gabbro?

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  EF) A) and B)
G) C) and E)

Question 9

A porphyritic igneous texture indicates that:

Accepted Answer

A)  there was water in the magma
B)  the rock cooled slowly and then quickly
C)  the rock broke apart as it flowed
D)  the rock cooled slowly
E)  the ash and pumice were hot and became compactedF) B) and E)
G) None of the above

Question 10

Which of the following settings is most likely to have eruptions of basalt?

Accepted Answer

A)  island arcs
B)  subduction beneath a thin continental plate
C)  subduction beneath a thick continental plate
D)  mid-ocean ridge
E)  none of theseF) B) and C)
G) D) and E)

Question 11

Which of the following can occur within a magma chamber?

Accepted Answer

A)  Sinking or floating crystals may change the composition of the remaining magma.
B)  Wall rocks can melt and become incorporated into the magma.
C)  If two magmas mix,the resulting magma would be between the composition of the two magmas.
D)  All of these.E) C) and D)
F) A) and B)

Question 12

This figure shows the formation of the Sierra Nevada batholith as magma chambers within the crust.What is the cause of melting?

Accepted Answer

A)  melting due to rising solid lithosphere
B)  decompression melting
C)  a hot spot
D)  release of water from the subducting plateE) A) and D)
F) A) and C)

Question 13

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 plateE) All of the above
F) B) and D)

Question 14

Which of the following is characteristic of the Sierra Nevada?

Accepted Answer

A)  peaks and cliffs of gray granite
B)  a large area of granitic rocks
C)  metamorphism of rocks within and adjacent to a batholith
D)  all of theseE) B) and D)
F) A) and C)

Question 15

Which letter in this classification table indicates the position of andesite?

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  EF) C) and D)
G) B) and E)

Question 16

A welded 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 compactedF) A) and B)
G) A) and C)

Question 17

Most igneous rocks in the Sierra Nevada batholith formed from:

Accepted Answer

A)  a hot spot beneath continental crust
B)  continental rifting
C)  ocean-continent convergence
D)  transform faultingE) B) and C)
F) All of the above

Question 18

Which numbered feature on this figure formed by an explosive pyroclastic eruption?

Accepted Answer

A)  Location 1,the Valles Caldera
B)  Location 2,dark basalt flows along the Rio Grande
C)  Location 3,the dark,basaltic volcanoes
D)  Location 4,pegmatite in the northeastern part of the areaE) A) and B)
F) B) and C)

Question 19

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 areaE) None of the above
F) A) and C)

Question 20

The igneous feature shown in this figure is a:

Accepted Answer

A)  dike
B)  sill
C)  volcanic neck
D)  laccolithE) A) and B)
F) C) and D)

Exam 5: Igneous Environments

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

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Most igneous rocks in the Sierra Nevada batholith formed from:

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Which of the following can occur within a magma chamber?

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

Correct AnswerverifiedShow Answer

A welded igneous texture indicates that:

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This figure shows the formation of the Sierra Nevada batholith as magma chambers within the crust.What is the cause of melting?

Correct AnswerverifiedShow Answer

Which letter in this classification table indicates the position of andesite?

Correct AnswerverifiedShow Answer

Which of the following rock types does NOT involve dissolved gas in the magma?

Correct AnswerverifiedShow Answer

The site on the accompanying figure that would mostly likely form a rock that is fine grained (has small crystals but is not glassy) is:

Correct AnswerverifiedShow Answer

Which of the letters shown on this figure would most likely include some intermediate to felsic magmas?

Correct AnswerverifiedShow Answer

Which letter in this classification table indicates the position of gabbro?

Correct AnswerverifiedShow Answer

Which of the following settings is most likely to have eruptions of basalt?

Correct AnswerverifiedShow Answer

Which of the following is characteristic of the Sierra Nevada?

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The igneous feature shown in this figure is a:

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

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The liquid-solid boundary on this graph slopes down and to the right because:

Correct AnswerverifiedShow Answer

The main cause of melting along subduction zones is the:

Correct AnswerverifiedShow Answer

Which numbered feature on this figure formed by an explosive pyroclastic eruption?

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A porphyritic igneous texture indicates that:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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