Question 1

Nonviolent eruptions characterized by extensive flows of basaltic lava are termed ____________.

Accepted Answer

A)  pyroclastic 
B)  effusive 
C)  explosive 
A)  pyroclastic 
B)  effusive 
C)  explosive

Question 2

The characteristic "rotten egg" smell of many active volcanoes is derived from ____________.

Accepted Answer

A)  iron and magnesium within lava 
B)  carbon dioxide gas 
C)  stale water within the magma chamber 
D)  hydrogen sulfide gas 
A)  iron and magnesium within lava 
B)  carbon dioxide gas 
C)  stale water within the magma chamber 
D)  hydrogen sulfide gas

Question 3

The Columbia River Plateau is an example of a ____________.

Accepted Answer

A)  caldera 
B)  fissure 
C)  flood basalt province 
D)  hot spot 
A)  caldera 
B)  fissure 
C)  flood basalt province 
D)  hot spot

Question 4

What was unusual about the 1986 disaster around Lake Nyos in Cameroon?

Accepted Answer

A)  A volcanic eruption involved a lateral blast of volcaniclastic debris that no one anticipated. 
B)  Pyroclastic flows buried surrounding villages, reminiscent of Pompeii 1,900 years earlier. 
C)  Volcanically derived carbon dioxide gas bubbled from the lake and suffocated people and animals nearby. 
D)  A slurry of lava and lake water flowed rapidly outward from the lake and buried surrounding villages. 
A)  A volcanic eruption involved a lateral blast of volcaniclastic debris that no one anticipated. 
B)  Pyroclastic flows buried surrounding villages, reminiscent of Pompeii 1,900 years earlier. 
C)  Volcanically derived carbon dioxide gas bubbled from the lake and suffocated people and animals nearby. 
D)  A slurry of lava and lake water flowed rapidly outward from the lake and buried surrounding villages.

Question 5

Ash,cinders,and blocks are all types of ____________.

Accepted Answer

A)  volcaniclastic debris 
B)  lava flows 
C)  Pele's hair 
D)  volcanoes 
A)  volcaniclastic debris 
B)  lava flows 
C)  Pele's hair 
D)  volcanoes

Question 6

Pillow lavas are associated with ____________.

Accepted Answer

A)  continental rhyolitic eruptions 
B)  continental basaltic eruptions 
C)  submarine rhyolitic eruptions 
D)  submarine basaltic eruptions 
A)  continental rhyolitic eruptions 
B)  continental basaltic eruptions 
C)  submarine rhyolitic eruptions 
D)  submarine basaltic eruptions

Question 7

Of the three primary forms of subaerial volcanoes,____________ consist of alternating layers of tephra and solidified lava.

Accepted Answer

A)  stratovolcanoes 
B)  cinder cones 
C)  shield volcanoes 
A)  stratovolcanoes 
B)  cinder cones 
C)  shield volcanoes

Question 8

In 1902,a famous,deadly pyroclastic flow killed thousands of people on the Caribbean island of ____________.

Accepted Answer

A)  Puerto Rico 
B)  Martinique 
C)  Aruba 
D)  Jamaica 
A)  Puerto Rico 
B)  Martinique 
C)  Aruba 
D)  Jamaica

Question 9

Which of the following is NOT an effect volcanic eruptions can have on climate?

Accepted Answer

A)  They can dim the stars. 
B)  They can lower temperatures for at least a season. 
C)  They can increase the growth rate of tree rings. 
D)  They can cause more radiant sunsets. 
A)  They can dim the stars. 
B)  They can lower temperatures for at least a season. 
C)  They can increase the growth rate of tree rings. 
D)  They can cause more radiant sunsets.

Question 10

If you lived on the flanks of Mt.Saint Helens and it erupted,what would be the first of the hazards to reach your home?

Accepted Answer

A)  flowing lava 
B)  volcanic gas 
C)  falling ash 
D)  pyroclastic flows 
A)  flowing lava 
B)  volcanic gas 
C)  falling ash 
D)  pyroclastic flows

Question 11

Pahoehoe ____________.

Accepted Answer

A)  forms when a basaltic lava flow ceases flowing and solidifies simultaneously 
B)  has a smoother texture than a'a' 
C)  is easier to walk on than a'a' is 
D)  All of the above are correct. 
A)  forms when a basaltic lava flow ceases flowing and solidifies simultaneously 
B)  has a smoother texture than a'a' 
C)  is easier to walk on than a'a' is 
D)  All of the above are correct.

Question 12

Rhyolitic lavas ____________.

Accepted Answer

A)  do not flow as far from the vent as basaltic lavas do 
B)  cool much more slowly than basaltic lavas do 
C)  are associated with volcanoes that almost never emit pyroclastic debris 
D)  All of the above are correct. 
A)  do not flow as far from the vent as basaltic lavas do 
B)  cool much more slowly than basaltic lavas do 
C)  are associated with volcanoes that almost never emit pyroclastic debris 
D)  All of the above are correct.

Question 13

Pele's hair ____________.

Accepted Answer

A)  consists of thin strands of basaltic volcanic glass 
B)  acquires aerodynamic torpedo-like shapes during flight out of the volcanic vent 
C)  forms only at the leading edge of basaltic lava flows 
D)  was instrumental in scoring the winning goal to defeat Uruguay in the 1958 World Cup finals 
A)  consists of thin strands of basaltic volcanic glass 
B)  acquires aerodynamic torpedo-like shapes during flight out of the volcanic vent 
C)  forms only at the leading edge of basaltic lava flows 
D)  was instrumental in scoring the winning goal to defeat Uruguay in the 1958 World Cup finals

Question 14

The greatest hazard to human life associated with volcanoes is ____________.

Accepted Answer

A)  flowing lava 
B)  volcanic gas 
C)  falling ash 
D)  pyroclastic flows 
A)  flowing lava 
B)  volcanic gas 
C)  falling ash 
D)  pyroclastic flows

Question 15

Columnar jointing is a type of fracturing that occurs in rhyolitic lava flows.

Accepted Answer

A) True 
 B)False

Question 16

If you were to find a caldera and crater of the same size and shape,how would you differentiate between them?

Accepted Answer

A)  Given time, the caldera will remain dormant, while the crater will not. 
B)  No remnants of a volcanic shape will be present with the caldera, while they will be with the crater. 
C)  Scoria will be found in the caldera but not in the crater. 
D)  Ignimbrite will be found in the caldera but not in the crater. 
A)  Given time, the caldera will remain dormant, while the crater will not. 
B)  No remnants of a volcanic shape will be present with the caldera, while they will be with the crater. 
C)  Scoria will be found in the caldera but not in the crater. 
D)  Ignimbrite will be found in the caldera but not in the crater.

Question 17

Volcanoes are entirely detrimental to the planet and human civilization,offering no benefits to humankind.

Accepted Answer

A) True 
 B)False

Question 18

Phreatomagmatic eruptions are ____________.

Accepted Answer

A)  explosive (pyroclastic) 
B)  effusive (dominated by lava flows) 
A)  explosive (pyroclastic) 
B)  effusive (dominated by lava flows)

Question 19

The Hawaiian island chain is an example of a(n)____________.

Accepted Answer

A)  island volcanic arc 
B)  continental volcanic arc 
C)  hot-spot island chain 
D)  stratovolcanic assembly 
A)  island volcanic arc 
B)  continental volcanic arc 
C)  hot-spot island chain 
D)  stratovolcanic assembly

Question 20

Of the three primary forms of subaerial volcanoes,____________ consist of a simple,conical pile of tephra.

Accepted Answer

A)  stratovolcanoes 
B)  cinder cones 
C)  shield volcanoes 
A)  stratovolcanoes 
B)  cinder cones 
C)  shield volcanoes

Exam 5: The Wrath of Vulcan: Volcanic Eruptions

Nonviolent eruptions characterized by extensive flows of basaltic lava are termed ____________.

The characteristic "rotten egg" smell of many active volcanoes is derived from ____________.

The Columbia River Plateau is an example of a ____________.

What was unusual about the 1986 disaster around Lake Nyos in Cameroon?

Ash,cinders,and blocks are all types of ____________.

Pillow lavas are associated with ____________.

Of the three primary forms of subaerial volcanoes,____________ consist of alternating layers of tephra and solidified lava.

In 1902,a famous,deadly pyroclastic flow killed thousands of people on the Caribbean island of ____________.

Which of the following is NOT an effect volcanic eruptions can have on climate?

If you lived on the flanks of Mt.Saint Helens and it erupted,what would be the first of the hazards to reach your home?

Pahoehoe ____________.

Rhyolitic lavas ____________.

Pele's hair ____________.

The greatest hazard to human life associated with volcanoes is ____________.

Columnar jointing is a type of fracturing that occurs in rhyolitic lava flows.

If you were to find a caldera and crater of the same size and shape,how would you differentiate between them?

Volcanoes are entirely detrimental to the planet and human civilization,offering no benefits to humankind.

Phreatomagmatic eruptions are ____________.

The Hawaiian island chain is an example of a(n)____________.

Of the three primary forms of subaerial volcanoes,____________ consist of a simple,conical pile of tephra.

The Earth in Context

The Way the Earth Works: Plate Tectonics

Patterns in Nature: Minerals

Up From the Inferno: Magma and Igneous Rocks

Pages of Earths Past: Sedimentary Rocks

Metamorphism: a Process of Change

A Violent Pulse: Earthquakes

Crags, cracks, and Crumples: Crustal Deformation and Mountain Building

Deep Time: How Old Is Old

A Biography of Earth

Riches in Rock: Energy and Mineral Resources

Unsafe Ground: Landslides and Other Mass Movements

Streams and Floods: the Geology of Running Water

Restless Realm: Oceans and Coasts

A Hidden Reserve: Groundwater

Dry Regions: the Geology of Deserts

Amazing Ice: Glaciers and Ice Ages

Global Change in the Earth System

Rock Groups

A Surface Veneer: Sediments and Soils

The Rock Cycle

The Earths Interior Revisited: Insights From Geophysics

Memories of Past Life: Fossils and Evolution

An Introduction to Landscapes and the Hydrologic Cycle

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Columnar jointing is a type of fracturing that occurs in rhyolitic lava flows. $Columnar jointing is a type of fracturing that occurs in rhyolitic lava flows.$