Question 1

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 area 
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 area

Question 2

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 these 
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 these

Question 3

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

Accepted Answer

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

Question 4

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 ridge 
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 ridge

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 these 
A) temperature increases down in the earth 
B) temperature decreases down in the earth 
C) pressure increases down in the earth 
D) none of these

Question 6

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

Question 7

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

Question 8

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. 
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.

Question 9

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 10

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

Question 11

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 faulting 
A) a hot spot beneath continental crust 
B) continental rifting 
C) ocean-continent convergence 
D) transform faulting

Question 12

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

Accepted Answer

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

Question 13

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 14

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

Question 15

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 basalt 
A) tuff 
B) pumice 
C) scoria 
D) diorite 
E) vesicular basalt

Question 16

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 17

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

Question 18

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 19

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 compacted 
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 compacted

Question 20

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 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

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

Which of the following is characteristic of the Sierra Nevada?

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

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

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

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:

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

Which of the following can occur within a magma chamber?

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

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

Most igneous rocks in the Sierra Nevada batholith formed from:

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

The igneous feature shown in this figure is a:

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

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

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

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

The main cause of melting along subduction zones is the:

A porphyritic igneous texture indicates that:

A welded igneous texture indicates that:

The Nature of Geology

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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

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Exam 5: Igneous Environments

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

Which of the following is characteristic of the Sierra Nevada?

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

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

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

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:

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

Which of the following can occur within a magma chamber?

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

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

Most igneous rocks in the Sierra Nevada batholith formed from:

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

The igneous feature shown in this figure is a:

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

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

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

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

The main cause of melting along subduction zones is the:

A porphyritic igneous texture indicates that:

A welded igneous texture indicates that:

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