Question 1

Mauna Loa in Hawaii is an example of which type of volcano?

Accepted Answer

A)  Shield volcano 
B)  Composite cone 
C)  Lava dome 
D)  Cinder cone 
E)  Stratovolcano 
A)  Shield volcano 
B)  Composite cone 
C)  Lava dome 
D)  Cinder cone 
E)  Stratovolcano A

Question 2

Which of the following environments has the most explosive volcanoes?

Accepted Answer

A)  Hotspots in the ocean 
B)  Hotspots on land 
C)  Continental rift zones 
D)  Mid-ocean ridges 
E)  Subduction zones 
A)  Hotspots in the ocean 
B)  Hotspots on land 
C)  Continental rift zones 
D)  Mid-ocean ridges 
E)  Subduction zones B

Question 3

In which of the following tectonic plate settings are volcanoes typically NOT found?

Accepted Answer

A)  Mid-ocean ridge 
B)  Continental rift 
C)  Subduction zone 
D)  Transform fault 
E)  Hotspot 
A)  Mid-ocean ridge 
B)  Continental rift 
C)  Subduction zone 
D)  Transform fault 
E)  Hotspot D

Question 4

Which of the following is NOT a reason why an ash fall can be hazardous?

Accepted Answer

A)  Destroys crops and makes the ground unsuitable for planting 
B)  Contaminates water supplies 
C)  Accumulates on building roofs causing them to collapse 
D)  Gets into jet engines causing them to fail 
E)  Sets on fire everything it touches 
A)  Destroys crops and makes the ground unsuitable for planting 
B)  Contaminates water supplies 
C)  Accumulates on building roofs causing them to collapse 
D)  Gets into jet engines causing them to fail 
E)  Sets on fire everything it touches

Question 5

What are volatiles?

Accepted Answer

A)  Large blocky projectiles fired from a volcano 
B)  Small abrasive particles such as volcanic ash that can make it difficult to breath 
C)  Thin fibers of lava that is extruded from a volcano 
D)  Silica tetrahedra in magma 
E)  Gases trapped in the magma 
A)  Large blocky projectiles fired from a volcano 
B)  Small abrasive particles such as volcanic ash that can make it difficult to breath 
C)  Thin fibers of lava that is extruded from a volcano 
D)  Silica tetrahedra in magma 
E)  Gases trapped in the magma

Question 6

Seattle, Washington is near the active volcano, Mt. Rainier. If you were put in charge of education for the city of Seattle, what hazards would you alert people of about Mt. Rainier? In addition, what type of warning systems would you put in place and what would you tell people to do in case of a potential hazard?

Accepted Answer

Potential hazards from Mt. Rainier inclu

Question 7

Which of the following volcanic hazards is responsible for the most deaths?

Accepted Answer

A)  Lava flows 
B)  Ash falls 
C)  Poisonous gases 
D)  Pyroclastic flows 
A)  Lava flows 
B)  Ash falls 
C)  Poisonous gases 
D)  Pyroclastic flows

Question 8

Explain the difference between a lava flow, a lahar and a pyroclastic flow. Which would be the most dangerous in an eruption and why?

Accepted Answer

A lava flow is a river-like flow of lava

Question 9

Where are the majority of the active volcanoes in the United States?

Accepted Answer

A)  Washington, Oregon and California 
B)  Wyoming and Idaho 
C)  Hawaii 
D)  Alaska 
E)  There are NO active volcanoes in the United States. 
A)  Washington, Oregon and California 
B)  Wyoming and Idaho 
C)  Hawaii 
D)  Alaska 
E)  There are NO active volcanoes in the United States.

Question 10

Several communities around Mt. Rainier are built on enormous old lahar deposits. What might people in these areas expect in an eruption?

Accepted Answer

A)  Their homes will probably be destroyed by a new lahar. 
B)  Their homes will be safe because new lahars will go elsewhere. 
C)  Their homes will probably be safe because homes are built to withstand lahars. 
D)  Their homes will probably have some water flooding damage. 
A)  Their homes will probably be destroyed by a new lahar. 
B)  Their homes will be safe because new lahars will go elsewhere. 
C)  Their homes will probably be safe because homes are built to withstand lahars. 
D)  Their homes will probably have some water flooding damage.

Question 11

Which of the following lists magma types in order of increasing viscosity (LEAST viscous first)?

Accepted Answer

A)  Basaltic, andesitic, rhyolitic 
B)  Basaltic, rhyolitic, andesitic 
C)  Rhyolitic, basaltic, andesitic 
D)  Rhyolitic, andesitic, basaltic 
E)  Andesitic, rhyolitic, basaltic 
A)  Basaltic, andesitic, rhyolitic 
B)  Basaltic, rhyolitic, andesitic 
C)  Rhyolitic, basaltic, andesitic 
D)  Rhyolitic, andesitic, basaltic 
E)  Andesitic, rhyolitic, basaltic

Question 12

Mt. St. Helens in Washington is an example of which type of volcano?

Accepted Answer

A)  Shield volcano 
B)  Stratovolcano 
C)  Caldera 
D)  Cinder cone 
A)  Shield volcano 
B)  Stratovolcano 
C)  Caldera 
D)  Cinder cone

Question 13

Which of the following is NOT used to determine whether a volcanic eruption is expected?

Accepted Answer

A)  Increase in earthquake activity 
B)  Changes in groundwater temperature 
C)  Decrease in atmospheric pressure 
D)  Change in shape of land surfaces around the volcano 
E)  Change in CO2 emissions 
A)  Increase in earthquake activity 
B)  Changes in groundwater temperature 
C)  Decrease in atmospheric pressure 
D)  Change in shape of land surfaces around the volcano 
E)  Change in CO2 emissions

Question 14

Scientists can use information about earthquakes to determine when a volcano is likely to erupt.

Accepted Answer

A) True 
 B)False

Question 15

What is the difference between a crater and a caldera?

Accepted Answer

A)  Craters are only formed from asteroid impacts. 
B)  Craters are formed from explosions while calderas are formed from inward collapse of volcano tops. 
C)  Calderas are craters found on the moon. 
D)  Calderas are only formed from asteroid impacts. 
A)  Craters are only formed from asteroid impacts. 
B)  Craters are formed from explosions while calderas are formed from inward collapse of volcano tops. 
C)  Calderas are craters found on the moon. 
D)  Calderas are only formed from asteroid impacts.

Question 16

Volcanoes can cause tsunamis.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is NOT a reason why people live near volcanoes?

Accepted Answer

A)  They don't think that they will erupt. 
B)  They don't have anywhere else to go. 
C)  The soil is good for farming. 
D)  It is their home. 
E)  Local zoning laws require some people to live near volcanoes. 
A)  They don't think that they will erupt. 
B)  They don't have anywhere else to go. 
C)  The soil is good for farming. 
D)  It is their home. 
E)  Local zoning laws require some people to live near volcanoes.

Question 18

What is the best reason why most lava flows aren't a threat to human life?

Accepted Answer

A)  Most lava flows don't move into inhabited areas. 
B)  Lava flows usually don't flow very quickly, people can outrun them. 
C)  Lava stays in the volcano and generally doesn't flow. 
D)  Lava flows are not hot enough to kill people, just to burn them. 
A)  Most lava flows don't move into inhabited areas. 
B)  Lava flows usually don't flow very quickly, people can outrun them. 
C)  Lava stays in the volcano and generally doesn't flow. 
D)  Lava flows are not hot enough to kill people, just to burn them.

Question 19

Where is the majority of lava extruded?

Accepted Answer

A)  At subduction zones 
B)  At hotspots 
C)  At divergent plate boundaries 
D)  At transform plate boundaries 
E)  At convergent plate boundaries 
A)  At subduction zones 
B)  At hotspots 
C)  At divergent plate boundaries 
D)  At transform plate boundaries 
E)  At convergent plate boundaries

Question 20

Mudflows or lahars associated with volcanoes do not usually cause much damage in a volcanic eruption because they are constrained to river valleys.

Accepted Answer

A) True 
 B)False

Mauna Loa in Hawaii is an example of which type of volcano?

Which of the following environments has the most explosive volcanoes?

In which of the following tectonic plate settings are volcanoes typically NOT found?

Which of the following is NOT a reason why an ash fall can be hazardous?

What are volatiles?

Which of the following volcanic hazards is responsible for the most deaths?

Explain the difference between a lava flow, a lahar and a pyroclastic flow. Which would be the most dangerous in an eruption and why?

Where are the majority of the active volcanoes in the United States?

Several communities around Mt. Rainier are built on enormous old lahar deposits. What might people in these areas expect in an eruption?

Which of the following lists magma types in order of increasing viscosity (LEAST viscous first)?

Mt. St. Helens in Washington is an example of which type of volcano?

Which of the following is NOT used to determine whether a volcanic eruption is expected?

Scientists can use information about earthquakes to determine when a volcano is likely to erupt.

What is the difference between a crater and a caldera?

Volcanoes can cause tsunamis.

Which of the following is NOT a reason why people live near volcanoes?

What is the best reason why most lava flows aren't a threat to human life?

Where is the majority of lava extruded?

Mudflows or lahars associated with volcanoes do not usually cause much damage in a volcanic eruption because they are constrained to river valleys.

Introduction to Natural Hazards

Internal Structure of the Earth and Plate Tectonics

Earthquakes

Tsunamis

Flooding

Mass Wasting

Subsidence and Soils

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Coastal Hazards

Climate and Climate Change

Wildfires

Impacts and Extinctions

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Exam 5: Volcanoes

Mauna Loa in Hawaii is an example of which type of volcano?

Which of the following environments has the most explosive volcanoes?

In which of the following tectonic plate settings are volcanoes typically NOT found?

Which of the following is NOT a reason why an ash fall can be hazardous?

What are volatiles?

Which of the following volcanic hazards is responsible for the most deaths?

Explain the difference between a lava flow, a lahar and a pyroclastic flow. Which would be the most dangerous in an eruption and why?

Where are the majority of the active volcanoes in the United States?

Several communities around Mt. Rainier are built on enormous old lahar deposits. What might people in these areas expect in an eruption?

Which of the following lists magma types in order of increasing viscosity (LEAST viscous first)?

Mt. St. Helens in Washington is an example of which type of volcano?

Which of the following is NOT used to determine whether a volcanic eruption is expected?

Scientists can use information about earthquakes to determine when a volcano is likely to erupt.

What is the difference between a crater and a caldera?

Volcanoes can cause tsunamis.

Which of the following is NOT a reason why people live near volcanoes?

What is the best reason why most lava flows aren't a threat to human life?

Where is the majority of lava extruded?

Mudflows or lahars associated with volcanoes do not usually cause much damage in a volcanic eruption because they are constrained to river valleys.

Introduction to Natural Hazards

Internal Structure of the Earth and Plate Tectonics

Earthquakes

Tsunamis

Flooding

Mass Wasting

Subsidence and Soils

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Coastal Hazards

Climate and Climate Change

Wildfires

Impacts and Extinctions

Filters