Question 1

What are the smaller secondary volcanic vents on a large composite volcano like Mt.Etna called?

Accepted Answer

The answer of What are the smaller secondary volcanic vents...

Question 2

Approximately how long has B.C.'s Mt.Garibaldi, in the Canadian part of the Cascades volcanoes, been dormant?

Accepted Answer

A) since May 1980 
B) since 1967 
C) since 1912 
D) since the last Ice Age 
A) since May 1980 
B) since 1967 
C) since 1912 
D) since the last Ice Age

Question 3

A relatively small, summit depression on a volcano, marking a former eruptive vent, is called a what?

Accepted Answer

The answer of A relatively small, summit depression on a...

Question 4

Which one of the following statements is false?

Accepted Answer

A) Melting temperatures of silicate rocks increase with increased pressure. 
B) Melting temperatures of silicate rocks are lowered by small amounts of water. 
C) Mafic magmas in general have higher temperatures than felsic magmas. 
D) When magma reaches the surface, its dissolved gas content increases. 
A) Melting temperatures of silicate rocks increase with increased pressure. 
B) Melting temperatures of silicate rocks are lowered by small amounts of water. 
C) Mafic magmas in general have higher temperatures than felsic magmas. 
D) When magma reaches the surface, its dissolved gas content increases.

Question 5

What is the most abundant type of magma erupted at oceanic spreading centres?

Accepted Answer

A) mafic 
B) pyroclastic 
C) andesitic 
D) felsic 
A) mafic 
B) pyroclastic 
C) andesitic 
D) felsic

Question 6

The eruptions of the Hawaiian volcanoes may be described as explosive in comparison to the 2010 Mount Merapi eruption.

Accepted Answer

A) True 
 B)False

Question 7

Obviously large volumes of lava and pyroclastic debris pose serious hazards to humans.What are some of the more indirect hazards associated with volcanic eruptions? Which of these indirect hazards are more likely to be overlooked when planning for potential eruptions in a given area? Why?

Accepted Answer

Air pollution by pyroclastics (blocking

Question 8

Word Analysis Questions
Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases.
-Choose the option that does not fit the pattern.
A)Deccan Traps
B)Minus Basin
C)Columbia Plateau
D)Black Tusk

Accepted Answer

The answer of Word Analysis Questions
Examine the words and/or phrases...

Question 9

What destroyed the city of St.Pierre, Martinique in 1902?

Accepted Answer

A) mudflows 
B) mafic lava flows 
C) heavy ashfall 
D) a nuée ardente 
A) mudflows 
B) mafic lava flows 
C) heavy ashfall 
D) a nuée ardente

Question 10

The 1991 Pinatubo eruption in the Philippines caused global temperatures to drop over the next year.What caused this phenomenon?

Accepted Answer

A) The eruption added large amounts of carbon dioxide to the atmosphere. 
B) The eruptive cloud destroyed parts of the Earth's protective ozone layer. 
C) Radioactive atoms blown into the atmosphere froze as they decayed. 
D) Sulfur dioxide was released and formed aerosols in the atmosphere. 
A) The eruption added large amounts of carbon dioxide to the atmosphere. 
B) The eruptive cloud destroyed parts of the Earth's protective ozone layer. 
C) Radioactive atoms blown into the atmosphere froze as they decayed. 
D) Sulfur dioxide was released and formed aerosols in the atmosphere.

Question 11

For the following items, please choose from one of the following answers.
-________ small basaltic cones built during one, short, eruptive episode

Accepted Answer

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

Question 12

Fluid mafic eruptions on sloping seafloor leaves piles of glassy skinned irregular shaped deposits called ________.

Accepted Answer

pillows, p

Question 13

How quickly are volcanoes like Paricutin in Mexico or Mt.Edziza in central B.C.built?

Accepted Answer

A) in a single eruption within a few hours 
B) in a single eruption within a few days 
C) in a single eruptive cycle lasting about a year or more 
D) in several eruptive cycles over 10's of thousands of years 
A) in a single eruption within a few hours 
B) in a single eruption within a few days 
C) in a single eruptive cycle lasting about a year or more 
D) in several eruptive cycles over 10's of thousands of years

Question 14

Consider the differences in shape and size of shield volcanoes, cinder cones, and composite volcanoes.How does the relative size and shape of each reflect variations in eruptive characteristics (duration, types of materials, composition of lava, etc.)? Which eruptive characteristics are common to all volcanoes and which ones are unique to each?

Accepted Answer

Shield volcanoes and composite volcanoes

Question 15

A magma's viscosity and tendency to cause explosive eruptions depends on its composition, temperature, and volatile gas content.

Accepted Answer

A) True 
 B)False

Question 16

Repeated eruptions of relatively fluid lava from fissures (Columbia River Plateau, Deccan Traps)can eventually cause an area to be covered by flood basalts.

Accepted Answer

A) True 
 B)False

Question 17

Correctly rank the these three magmas in order of increasing viscosity: andesitic, mafic, felsic.

Accepted Answer

mafic, and

Question 18

Volcanic bombs originate ________.

Accepted Answer

A) as laser-guided, granite blocks launched from a supersonic jet 
B) as blocks of volcanic rock ejected from an erupting volcanic crater 
C) as erupted magma blobs that partly congeal before falling to the ground 
D) as ash particles that join together in the eruptive plume and fall as cobble-sized objects 
A) as laser-guided, granite blocks launched from a supersonic jet 
B) as blocks of volcanic rock ejected from an erupting volcanic crater 
C) as erupted magma blobs that partly congeal before falling to the ground 
D) as ash particles that join together in the eruptive plume and fall as cobble-sized objects

Question 19

Ash and lapilli are different sized pyroclastic particles, smaller and larger than 2 mm respectively.

Accepted Answer

A) True 
 B)False

Question 20

What volcanic rock, typically of rhyolitic composition, forms by compaction and squeezing together of particles in a hot, pyroclastic-flow deposit?

Accepted Answer

The answer of What volcanic rock, typically of rhyolitic composition,...

What are the smaller secondary volcanic vents on a large composite volcano like Mt.Etna called?

Approximately how long has B.C.'s Mt.Garibaldi, in the Canadian part of the Cascades volcanoes, been dormant?

A relatively small, summit depression on a volcano, marking a former eruptive vent, is called a what?

Which one of the following statements is false?

What is the most abundant type of magma erupted at oceanic spreading centres?

The eruptions of the Hawaiian volcanoes may be described as explosive in comparison to the 2010 Mount Merapi eruption.

Obviously large volumes of lava and pyroclastic debris pose serious hazards to humans.What are some of the more indirect hazards associated with volcanic eruptions? Which of these indirect hazards are more likely to be overlooked when planning for potential eruptions in a given area? Why?

Word Analysis Questions Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern. A)Deccan Traps B)Minus Basin C)Columbia Plateau D)Black Tusk

What destroyed the city of St.Pierre, Martinique in 1902?

The 1991 Pinatubo eruption in the Philippines caused global temperatures to drop over the next year.What caused this phenomenon?

For the following items, please choose from one of the following answers. -________ small basaltic cones built during one, short, eruptive episode

Fluid mafic eruptions on sloping seafloor leaves piles of glassy skinned irregular shaped deposits called ________.

How quickly are volcanoes like Paricutin in Mexico or Mt.Edziza in central B.C.built?

A magma's viscosity and tendency to cause explosive eruptions depends on its composition, temperature, and volatile gas content.

Repeated eruptions of relatively fluid lava from fissures (Columbia River Plateau, Deccan Traps)can eventually cause an area to be covered by flood basalts.

Correctly rank the these three magmas in order of increasing viscosity: andesitic, mafic, felsic.

Volcanic bombs originate ________.

Ash and lapilli are different sized pyroclastic particles, smaller and larger than 2 mm respectively.

What volcanic rock, typically of rhyolitic composition, forms by compaction and squeezing together of particles in a hot, pyroclastic-flow deposit?

An Introduction to Geology and Plate Tectonics

Minerals: The Building Blocks of Rocks

Igneous Rocks

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

Earthquakes and Earth's Interior

The Ocean Floor

Plate Tectonics: The Framework for Modern Geology

Mountain Building and Continental Frameworks

Mass Wasting: The Work of Gravity

Running Water

Groundwater

Glaciers and Glaciation

Deserts and Winds

Shorelines

Mineral and Energy Resources

Filters

Exam 4: Volcanoes and Volcanic Processes

What are the smaller secondary volcanic vents on a large composite volcano like Mt.Etna called?

Approximately how long has B.C.'s Mt.Garibaldi, in the Canadian part of the Cascades volcanoes, been dormant?

A relatively small, summit depression on a volcano, marking a former eruptive vent, is called a what?

Which one of the following statements is false?

What is the most abundant type of magma erupted at oceanic spreading centres?

The eruptions of the Hawaiian volcanoes may be described as explosive in comparison to the 2010 Mount Merapi eruption.

Obviously large volumes of lava and pyroclastic debris pose serious hazards to humans.What are some of the more indirect hazards associated with volcanic eruptions? Which of these indirect hazards are more likely to be overlooked when planning for potential eruptions in a given area? Why?

Word Analysis Questions Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern. A)Deccan Traps B)Minus Basin C)Columbia Plateau D)Black Tusk

What destroyed the city of St.Pierre, Martinique in 1902?

The 1991 Pinatubo eruption in the Philippines caused global temperatures to drop over the next year.What caused this phenomenon?

For the following items, please choose from one of the following answers. -________ small basaltic cones built during one, short, eruptive episode

Fluid mafic eruptions on sloping seafloor leaves piles of glassy skinned irregular shaped deposits called ________.

How quickly are volcanoes like Paricutin in Mexico or Mt.Edziza in central B.C.built?

A magma's viscosity and tendency to cause explosive eruptions depends on its composition, temperature, and volatile gas content.

Repeated eruptions of relatively fluid lava from fissures (Columbia River Plateau, Deccan Traps)can eventually cause an area to be covered by flood basalts.

Correctly rank the these three magmas in order of increasing viscosity: andesitic, mafic, felsic.

Volcanic bombs originate ________.

Ash and lapilli are different sized pyroclastic particles, smaller and larger than 2 mm respectively.

What volcanic rock, typically of rhyolitic composition, forms by compaction and squeezing together of particles in a hot, pyroclastic-flow deposit?

An Introduction to Geology and Plate Tectonics

Minerals: The Building Blocks of Rocks

Igneous Rocks

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

Earthquakes and Earth's Interior

The Ocean Floor

Plate Tectonics: The Framework for Modern Geology

Mountain Building and Continental Frameworks

Mass Wasting: The Work of Gravity

Running Water

Groundwater

Glaciers and Glaciation

Deserts and Winds

Shorelines

Mineral and Energy Resources

Filters