Question 1

What types of rocks would be common in the volcano in this figure?

Accepted Answer

A) welded tuff 
B) felsic and intermediate lava flows 
C) nonwelded tuff 
D) volcanic domes 
E) all of these 
A) welded tuff 
B) felsic and intermediate lava flows 
C) nonwelded tuff 
D) volcanic domes 
E) all of these

Question 2

Composite volcanoes are so called because they:

Accepted Answer

A) are a combination of shield volcanoes,scoria cones,and other volcanoes 
B) have many different types of geologic hazards 
C) were first discovered on the island of Composita in Italy 
D) are composed of lava flows,pyroclastic material,and mudflows 
E) none of these 
A) are a combination of shield volcanoes,scoria cones,and other volcanoes 
B) have many different types of geologic hazards 
C) were first discovered on the island of Composita in Italy 
D) are composed of lava flows,pyroclastic material,and mudflows 
E) none of these

Question 3

Which of the numbered features is a lava flow?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 4

A lava solidifies into nonvesicular basalt instead of vesicular basalt because:

Accepted Answer

A) the magma has a low content of gas 
B) the lava forms a ropy texture 
C) the lava flow breaks apart as it flows 
D) the lava flow forms lava tubes 
A) the magma has a low content of gas 
B) the lava forms a ropy texture 
C) the lava flow breaks apart as it flows 
D) the lava flow forms lava tubes

Question 5

Comparing these two photographs,which eruption has lower viscosity magma?

Accepted Answer

A) the fluid cascade of lava 
B) the circular volcanic feature 
C) they could have the same viscosity 
D) there is no way to tell 
A) the fluid cascade of lava 
B) the circular volcanic feature 
C) they could have the same viscosity 
D) there is no way to tell

Question 6

Which of the following sites would have the most dangerous volcanoes? A is on an island arc,B is in the Andes,C is near Hawaii,D is along a mid-ocean ridge.

Accepted Answer

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

Question 7

What types of rocks would be most common in the volcano shown in this photograph?

Accepted Answer

A) scoria 
B) basalt mostly formed in lava flows 
C) felsic and intermediate lava flows 
D) tuff and tephra 
E) none of these 
A) scoria 
B) basalt mostly formed in lava flows 
C) felsic and intermediate lava flows 
D) tuff and tephra 
E) none of these

Question 8

Which of the following is NOT evidence of recent activity at a volcano?

Accepted Answer

A) Thick,well-developed soil 
B) Layer of ash blanketing hillslopes 
C) Unweathered lava flows 
D) Ash flows lacking a well-developed soil 
A) Thick,well-developed soil 
B) Layer of ash blanketing hillslopes 
C) Unweathered lava flows 
D) Ash flows lacking a well-developed soil

Question 9

What type of eruption formed the volcano in this photograph?

Accepted Answer

A) fluid lava flows 
B) eruption of viscous lava 
C) lava fountain 
D) eruption column 
E) pyroclastic flow 
A) fluid lava flows 
B) eruption of viscous lava 
C) lava fountain 
D) eruption column 
E) pyroclastic flow

Question 10

Which of the following are dangerous aspects of composite volcanoes?

Accepted Answer

A) pyroclastic flows 
B) landslides and mudflows 
C) an eruption column 
D) all of these 
A) pyroclastic flows 
B) landslides and mudflows 
C) an eruption column 
D) all of these

Question 11

Which of the following are NOT differences between an eruption column and pyroclastic flow?

Accepted Answer

A) Tephra in an eruption column mostly cools before it reaches the ground. 
B) A pyroclastic flow mostly flows downhill,whereas a column rises at first. 
C) Damage from an eruption column can be more widespread. 
D) Pyroclastic flows form from a higher gas flux. 
A) Tephra in an eruption column mostly cools before it reaches the ground. 
B) A pyroclastic flow mostly flows downhill,whereas a column rises at first. 
C) Damage from an eruption column can be more widespread. 
D) Pyroclastic flows form from a higher gas flux.

Question 12

Which of the following are hazards associated with scoria cones?

Accepted Answer

A) volcanic bombs and other large projectiles ejected from the volcano 
B) toxic gases 
C) fine particles of volcanic ash 
D) all of these 
A) volcanic bombs and other large projectiles ejected from the volcano 
B) toxic gases 
C) fine particles of volcanic ash 
D) all of these

Question 13

This dark gray igneous rock is glassy and elsewhere contains small vesicles and flow bands.What kind of eruption probably formed this rock?

Accepted Answer

A) eruption of a low-viscosity,basaltic lava flow 
B) eruption of high-viscosity lava in a dome 
C) dome collapse that forms volcanic breccia 
D) eruption of a pyroclastic flow that forms a thick and hot deposit 
E) slow settling of ash from a tall eruption column forming a nonwelded tuff 
A) eruption of a low-viscosity,basaltic lava flow 
B) eruption of high-viscosity lava in a dome 
C) dome collapse that forms volcanic breccia 
D) eruption of a pyroclastic flow that forms a thick and hot deposit 
E) slow settling of ash from a tall eruption column forming a nonwelded tuff

Question 14

What type of eruption is shown in this photograph?

Accepted Answer

A) lava flow 
B) lava dome 
C) lava fountain 
D) pyroclastic column 
E) pyroclastic flow 
A) lava flow 
B) lava dome 
C) lava fountain 
D) pyroclastic column 
E) pyroclastic flow

Question 15

What types of rocks would be most common in the volcano in this photograph?

Accepted Answer

A) scoria and other vesicular basalt 
B) basalt mostly formed in lava flows 
C) felsic and intermediate lava flows 
D) pillow basalts 
E) none of these 
A) scoria and other vesicular basalt 
B) basalt mostly formed in lava flows 
C) felsic and intermediate lava flows 
D) pillow basalts 
E) none of these

Question 16

Shield volcanoes commonly involve:

Accepted Answer

A) fluid lava flows 
B) volcanic domes 
C) viscous lava flows 
D) pyroclastic flows 
E) all of these 
A) fluid lava flows 
B) volcanic domes 
C) viscous lava flows 
D) pyroclastic flows 
E) all of these

Question 17

Which site on the island is the most dangerous?

Accepted Answer

A) the location of Rock 1 
B) the location of Rock 2 
C) the location of Rock 3 
D) the area of the landslide blocks 
E) the area of the mudflow deposits 
A) the location of Rock 1 
B) the location of Rock 2 
C) the location of Rock 3 
D) the area of the landslide blocks 
E) the area of the mudflow deposits

Question 18

Which of the following hazards is probably NOT associated with this volcano?

Accepted Answer

A) destruction by fast-moving lava 
B) pyroclastic flows 
C) eruption column 
D) mudflows 
E) collapse of a volcanic dome 
A) destruction by fast-moving lava 
B) pyroclastic flows 
C) eruption column 
D) mudflows 
E) collapse of a volcanic dome

Question 19

What types of rocks would be most common in the volcano in this photograph?

Accepted Answer

A) scoria and other vesicular basalt 
B) basalt mostly formed in lava flows 
C) felsic and intermediate lava flows and tephra 
D) pillow basalts 
E) none of these 
A) scoria and other vesicular basalt 
B) basalt mostly formed in lava flows 
C) felsic and intermediate lava flows and tephra 
D) pillow basalts 
E) none of these

Question 20

This relatively small volcanic feature consists of solidified lava and some volcanic ash.What kind of volcano is it?

Accepted Answer

A) scoria cone 
B) shield volcano 
C) composite volcano 
D) caldera 
E) none of these 
A) scoria cone 
B) shield volcano 
C) composite volcano 
D) caldera 
E) none of these

What types of rocks would be common in the volcano in this figure?

Composite volcanoes are so called because they:

Which of the numbered features is a lava flow?

A lava solidifies into nonvesicular basalt instead of vesicular basalt because:

Comparing these two photographs,which eruption has lower viscosity magma?

Which of the following sites would have the most dangerous volcanoes? A is on an island arc,B is in the Andes,C is near Hawaii,D is along a mid-ocean ridge.

What types of rocks would be most common in the volcano shown in this photograph?

Which of the following is NOT evidence of recent activity at a volcano?

What type of eruption formed the volcano in this photograph?

Which of the following are dangerous aspects of composite volcanoes?

Which of the following are NOT differences between an eruption column and pyroclastic flow?

Which of the following are hazards associated with scoria cones?

This dark gray igneous rock is glassy and elsewhere contains small vesicles and flow bands.What kind of eruption probably formed this rock?

What type of eruption is shown in this photograph?

What types of rocks would be most common in the volcano in this photograph?

Shield volcanoes commonly involve:

Which site on the island is the most dangerous?

Which of the following hazards is probably NOT associated with this volcano?

What types of rocks would be most common in the volcano in this photograph?

This relatively small volcanic feature consists of solidified lava and some volcanic ash.What kind of volcano is it?

The Nature of Geology

Investigating Geologic Questions

Plate Tectonics

Earth Materials

Igneous Environments

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

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Exam 6: Volcanoes and Volcanic Hazards

What types of rocks would be common in the volcano in this figure?

Composite volcanoes are so called because they:

Which of the numbered features is a lava flow?

A lava solidifies into nonvesicular basalt instead of vesicular basalt because:

Comparing these two photographs,which eruption has lower viscosity magma?

Which of the following sites would have the most dangerous volcanoes? A is on an island arc,B is in the Andes,C is near Hawaii,D is along a mid-ocean ridge.

What types of rocks would be most common in the volcano shown in this photograph?

Which of the following is NOT evidence of recent activity at a volcano?

What type of eruption formed the volcano in this photograph?

Which of the following are dangerous aspects of composite volcanoes?

Which of the following are NOT differences between an eruption column and pyroclastic flow?

Which of the following are hazards associated with scoria cones?

This dark gray igneous rock is glassy and elsewhere contains small vesicles and flow bands.What kind of eruption probably formed this rock?

What type of eruption is shown in this photograph?

What types of rocks would be most common in the volcano in this photograph?

Shield volcanoes commonly involve:

Which site on the island is the most dangerous?

Which of the following hazards is probably NOT associated with this volcano?

What types of rocks would be most common in the volcano in this photograph?

This relatively small volcanic feature consists of solidified lava and some volcanic ash.What kind of volcano is it?

The Nature of Geology

Investigating Geologic Questions

Plate Tectonics

Earth Materials

Igneous Environments

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