Question 1

Volcanic domes commonly are partially destroyed when:

Accepted Answer

A) gases are released slowly out the top of the dome,dissolving it 
B) steep parts of the dome collapse and cause small pyroclastic flows 
C) fast-moving,low-viscosity lava carries away part of the dome 
D) the center of the dome collapses,forming a composite volcano 
E) all of these 
A) gases are released slowly out the top of the dome,dissolving it 
B) steep parts of the dome collapse and cause small pyroclastic flows 
C) fast-moving,low-viscosity lava carries away part of the dome 
D) the center of the dome collapses,forming a composite volcano 
E) all of these

Question 2

When basaltic lava reach the ocean they:

Accepted Answer

A) cause lava fountains at the vent on land 
B) form pillow basalts 
C) can flow long distances on top of the water 
D) form circular calderas 
E) all of these 
A) cause lava fountains at the vent on land 
B) form pillow basalts 
C) can flow long distances on top of the water 
D) form circular calderas 
E) all of these

Question 3

Which of the numbered features is a pyroclastic 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

Which of the following activities is NOT used to monitor volcanoes?

Accepted Answer

A) measuring seismic activity with seismic instruments 
B) measuring sulfur dioxide gas emissions 
C) measuring changes in heat flow from satellites 
D) measuring tilting on the flanks of a volcano 
E) all of these are used to monitor volcanoes 
A) measuring seismic activity with seismic instruments 
B) measuring sulfur dioxide gas emissions 
C) measuring changes in heat flow from satellites 
D) measuring tilting on the flanks of a volcano 
E) all of these are used to monitor volcanoes

Question 5

What are some factors that could allow flood basalts to have high-volume eruptions?

Accepted Answer

A) a large amount of magma is generated in the mantle 
B) magma rises to the surface along thick dikes 
C) the magma is hot and has a low viscosity 
D) all of these 
A) a large amount of magma is generated in the mantle 
B) magma rises to the surface along thick dikes 
C) the magma is hot and has a low viscosity 
D) all of these

Question 6

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) volcanic dome 
E) caldera 
A) scoria cone 
B) shield volcano 
C) composite volcano 
D) volcanic dome 
E) caldera

Question 7

This relatively large,symmetrical volcano contains interlayered lava flow,pyroclastic deposits,and volcanic mudflows.What kind of volcano is it?

Accepted Answer

A) scoria cone 
B) shield volcano 
C) composite volcano 
D) volcanic dome 
E) caldera 
A) scoria cone 
B) shield volcano 
C) composite volcano 
D) volcanic dome 
E) caldera

Question 8

What are the rounded hills inside the Valles Caldera?

Accepted Answer

A) volcanic necks 
B) landslides 
C) volcanic domes 
D) scoria cones 
A) volcanic necks 
B) landslides 
C) volcanic domes 
D) scoria cones

Question 9

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 10

What type of eruption formed the small 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 11

Eruptions on the islands of Santorini in Greece and Krakatau in Indonesia resulted in:

Accepted Answer

A) collapse of a huge caldera that caused part of an island to disappear beneath the sea 
B) a huge ash column and pyroclastic flows 
C) destructive waves that traveled across the sea 
D) all of these 
A) collapse of a huge caldera that caused part of an island to disappear beneath the sea 
B) a huge ash column and pyroclastic flows 
C) destructive waves that traveled across the sea 
D) all of these

Question 12

This volcano is relatively small and composed of volcanic cinders.What kind of volcano is it?

Accepted Answer

A) scoria cone 
B) shield volcano 
C) composite volcano 
D) volcanic dome 
E) caldera 
A) scoria cone 
B) shield volcano 
C) composite volcano 
D) volcanic dome 
E) caldera

Question 13

Eruptions of scoria cones are commonly associated with:

Accepted Answer

A) basaltic lava flows 
B) lava fountains 
C) pyroclastic flow 
D) viscous lava flows 
E) basaltic lava flows and lava fountains 
A) basaltic lava flows 
B) lava fountains 
C) pyroclastic flow 
D) viscous lava flows 
E) basaltic lava flows and lava fountains

Question 14

What type of material likely composes this volcano?

Accepted Answer

A) felsic to intermediate lava flows 
B) pyroclastic flows 
C) volcanic mudflows and landslides 
D) all of these 
A) felsic to intermediate lava flows 
B) pyroclastic flows 
C) volcanic mudflows and landslides 
D) all of these

Question 15

Which of the following are ways that viscosity affects gases in magma?

Accepted Answer

A) Viscous magma prevents gas from escaping easily. 
B) Abundant silica chains in viscous magma allow gas to pass quickly through the magma. 
C) Less viscous magma allows gas to escape,which can lead to very explosive eruptions. 
D) All of these. 
A) Viscous magma prevents gas from escaping easily. 
B) Abundant silica chains in viscous magma allow gas to pass quickly through the magma. 
C) Less viscous magma allows gas to escape,which can lead to very explosive eruptions. 
D) All of these.

Question 16

What is the plate-tectonic setting of Mount Rainier?

Accepted Answer

A) a hot spot related to Yellowstone 
B) spreading along the Juan de Fuca ridge 
C) a continent-continent collision 
D) subduction beneath the Pacific Northwest 
E) none of these 
A) a hot spot related to Yellowstone 
B) spreading along the Juan de Fuca ridge 
C) a continent-continent collision 
D) subduction beneath the Pacific Northwest 
E) none of these

Question 17

The most dangerous type of volcano is a:

Accepted Answer

A) scoria cone 
B) scoria cone whose magmas are interacting with groundwater 
C) huge shield volcano 
D) composite volcano 
A) scoria cone 
B) scoria cone whose magmas are interacting with groundwater 
C) huge shield volcano 
D) composite volcano

Question 18

Which of the following is NOT true about flood basalts?

Accepted Answer

A) They cover large areas and contain huge volumes of magma. 
B) They cover much of the Columbia Plateau of the Pacific Northwest. 
C) They are fed from large interconnected composite volcanoes. 
D) Some flood basalts erupted at about the same time as major extinctions of species. 
A) They cover large areas and contain huge volumes of magma. 
B) They cover much of the Columbia Plateau of the Pacific Northwest. 
C) They are fed from large interconnected composite volcanoes. 
D) Some flood basalts erupted at about the same time as major extinctions of species.

Question 19

Which of the following sites has volcanism related to a hot spot or divergent margin? 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 20

Flood basalts influence life on Earth because:

Accepted Answer

A) Large volumes of flood basalts are erupted during a short time 
B) Eruptions can release large amounts of gas that cool the atmosphere 
C) Eruptions can release large amounts of gas that warm the atmosphere 
D) All of these 
A) Large volumes of flood basalts are erupted during a short time 
B) Eruptions can release large amounts of gas that cool the atmosphere 
C) Eruptions can release large amounts of gas that warm the atmosphere 
D) All of these

Volcanic domes commonly are partially destroyed when:

When basaltic lava reach the ocean they:

Which of the numbered features is a pyroclastic flow?

Which of the following activities is NOT used to monitor volcanoes?

What are some factors that could allow flood basalts to have high-volume eruptions?

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

This relatively large,symmetrical volcano contains interlayered lava flow,pyroclastic deposits,and volcanic mudflows.What kind of volcano is it?

What are the rounded hills inside the Valles Caldera?

What type of eruption is shown in this photograph?

What type of eruption formed the small volcano in this photograph?

Eruptions on the islands of Santorini in Greece and Krakatau in Indonesia resulted in:

This volcano is relatively small and composed of volcanic cinders.What kind of volcano is it?

Eruptions of scoria cones are commonly associated with:

What type of material likely composes this volcano?

Which of the following are ways that viscosity affects gases in magma?

What is the plate-tectonic setting of Mount Rainier?

The most dangerous type of volcano is a:

Which of the following is NOT true about flood basalts?

Which of the following sites has volcanism related to a hot spot or divergent margin? A is on an island arc,B is in the Andes,C is near Hawaii,D is along a mid-ocean ridge.

Flood basalts influence life on Earth because:

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

Exam 6: Volcanoes and Volcanic Hazards

Volcanic domes commonly are partially destroyed when:

When basaltic lava reach the ocean they:

Which of the numbered features is a pyroclastic flow?

Which of the following activities is NOT used to monitor volcanoes?

What are some factors that could allow flood basalts to have high-volume eruptions?

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

This relatively large,symmetrical volcano contains interlayered lava flow,pyroclastic deposits,and volcanic mudflows.What kind of volcano is it?

What are the rounded hills inside the Valles Caldera?

What type of eruption is shown in this photograph?

What type of eruption formed the small volcano in this photograph?

Eruptions on the islands of Santorini in Greece and Krakatau in Indonesia resulted in:

This volcano is relatively small and composed of volcanic cinders.What kind of volcano is it?

Eruptions of scoria cones are commonly associated with:

What type of material likely composes this volcano?

Which of the following are ways that viscosity affects gases in magma?

What is the plate-tectonic setting of Mount Rainier?

The most dangerous type of volcano is a:

Which of the following is NOT true about flood basalts?

Which of the following sites has volcanism related to a hot spot or divergent margin? A is on an island arc,B is in the Andes,C is near Hawaii,D is along a mid-ocean ridge.

Flood basalts influence life on Earth because:

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