Question 1

The 1943- 44 eruption of Paricutin in Mexico was characterized by which one of the following sets of volcanic phenomena?

Accepted Answer

A)  pyroclastic eruptions; nuée ardente flows 
B)  cinder cone building; mafic aa lava 
C)  welded- tuff deposition; caldera formation 
D)  mudflows; explosive ash eruptions 
A)  pyroclastic eruptions; nuée ardente flows 
B)  cinder cone building; mafic aa lava 
C)  welded- tuff deposition; caldera formation 
D)  mudflows; explosive ash eruptions

Question 2

The Columbia Plateau in Washington and Oregon is what type of volcanic feature?

Accepted Answer

A)  a caldera filled with rhyolite lava flows 
B)  a thick stack of welded- luff layers 
C)  flood basalt plateau 
D)  a field of large composite cones 
A)  a caldera filled with rhyolite lava flows 
B)  a thick stack of welded- luff layers 
C)  flood basalt plateau 
D)  a field of large composite cones

Question 3

How are the Icelandic volcanoes related to plate tectonics?

Accepted Answer

A)  They lie on a spreading centre where two plates are converging. 
B)  They lie along a subduction zone where two plates are diverging. 
C)  They lie on a subduction zone where two plates are converging. 
D)  They lie on a spreading centre where two plates are moving apart. 
A)  They lie on a spreading centre where two plates are converging. 
B)  They lie along a subduction zone where two plates are diverging. 
C)  They lie on a subduction zone where two plates are converging. 
D)  They lie on a spreading centre where two plates are moving apart.

Question 4

How do volcanic bombs originate?

Accepted Answer

A)  as ash particles that join together in the eruptive plume and fall as cobble- sized objects 
B)  as blocks of old shattered volcanic rock ejected from an erupting volcanic crater 
C)  as high temperature residue violently expelled from the melting region, all the way up the volcanic conduit 
D)  as semi- molten magma blobs that get erupted, streamlined, and partly congeal before falling to the ground 
A)  as ash particles that join together in the eruptive plume and fall as cobble- sized objects 
B)  as blocks of old shattered volcanic rock ejected from an erupting volcanic crater 
C)  as high temperature residue violently expelled from the melting region, all the way up the volcanic conduit 
D)  as semi- molten magma blobs that get erupted, streamlined, and partly congeal before falling to the ground

Question 5

What kind of volcano is Mount Garibaldi?

Accepted Answer

A)  a basaltic shield volcano 
B)  a basaltic cinder cone 
C)  a composite cone 
D)  a small, welded tuff cone 
A)  a basaltic shield volcano 
B)  a basaltic cinder cone 
C)  a composite cone 
D)  a small, welded tuff cone

Question 6

What type of volcano is shown in the diagram below?

Accepted Answer

The answer of What type of volcano is shown in...

Question 7

Gas rich andesitic magmas generate composite cones made up of________ .

Accepted Answer

A)  multiple overlapping rhyolite domes rimming a central caldera 
B)  conical shaped lava flows 
C)  abundant coarse pyroclastics and short, thick, viscous lava flows 
D)  abundant basalt dykes and thick accumulations of low viscosity flows 
A)  multiple overlapping rhyolite domes rimming a central caldera 
B)  conical shaped lava flows 
C)  abundant coarse pyroclastics and short, thick, viscous lava flows 
D)  abundant basalt dykes and thick accumulations of low viscosity flows

Question 8

How are volcanic conduits formed?

Accepted Answer

A)  by erosion from hot gases that carry hard abrasive rocks and ash upwards 
B)  by superheated gases melting a pipe through the older rocks of the volcano 
C)  by injecting molten magma up through the volcano to clear a path 
D)  The vent is kept clear by continuous eruption and the walls are formed by deposits. 
A)  by erosion from hot gases that carry hard abrasive rocks and ash upwards 
B)  by superheated gases melting a pipe through the older rocks of the volcano 
C)  by injecting molten magma up through the volcano to clear a path 
D)  The vent is kept clear by continuous eruption and the walls are formed by deposits.

Question 9

Which one of the following statements concerning volcanic blocks and bombs is true?

Accepted Answer

A)  Blocks are broken fragments of solid rocks; bombs have smaller sizes than lapilli. 
B)  Bombs and blocks are both smaller than lapilli and cinders. 
C)  Bombs are guided to Earth by laser beams; blocks fall anywhere. 
D)  Bombs are ejected as magma lumps; blocks are ejected as solid fragments. 
A)  Blocks are broken fragments of solid rocks; bombs have smaller sizes than lapilli. 
B)  Bombs and blocks are both smaller than lapilli and cinders. 
C)  Bombs are guided to Earth by laser beams; blocks fall anywhere. 
D)  Bombs are ejected as magma lumps; blocks are ejected as solid fragments.

Question 10

Oxidized, reddish, vesicle rich, mafic lapilli that pile up to form cinder cones are called_______ .

Accepted Answer

A)  blocks 
B)  bombs 
C)  scoria 
D)  pumice 
A)  blocks 
B)  bombs 
C)  scoria 
D)  pumice

Question 11

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

Accepted Answer

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

Question 12

Which of the following is associated with deep mantle plumes?

Accepted Answer

A)  Vesuvius and the other volcanoes of Italy 
B)  Mt. St. Helens and other volcanoes of the Cascade Mountains 
C)  the volcanoes of Hawaii and the thermal activity in Yellowstone National Park 
D)  the very young cinder cones scattered across the southwestern United States 
A)  Vesuvius and the other volcanoes of Italy 
B)  Mt. St. Helens and other volcanoes of the Cascade Mountains 
C)  the volcanoes of Hawaii and the thermal activity in Yellowstone National Park 
D)  the very young cinder cones scattered across the southwestern United States

Question 13

What natural disaster contributed to the disappearance of the Minoan civilization and gave rise to the legend of The Lost Island of Atlantis mentioned in Plato's writings?

Accepted Answer

A)  It was buried by thick ash deposits from the volcanic eruption of Thera about 1600 B.C. and sank as the caldera beneath the island collapsed. 
B)  It was buried by thick ash deposits from Mt. Vesuvius in 79 B.C. 
C)  It was obliterated by volcanic dust storms from North Africa in the sixth century A.D. 
D)  It washed away in a giant tsunami about 79 A.D. 
A)  It was buried by thick ash deposits from the volcanic eruption of Thera about 1600 B.C. and sank as the caldera beneath the island collapsed. 
B)  It was buried by thick ash deposits from Mt. Vesuvius in 79 B.C. 
C)  It was obliterated by volcanic dust storms from North Africa in the sixth century A.D. 
D)  It washed away in a giant tsunami about 79 A.D.

Question 14

Which one of the following statements is false?

Accepted Answer

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

Question 15

Which kind of volcano is closely associated with convergent plate boundaries and subduction zones?

Accepted Answer

The answer of Which kind of volcano is closely associated...

Question 16

How was Crater Lake, Oregon formed?

Accepted Answer

A)  caldera collapse of the top of Mt. Mazama after the eruption 7700 years ago partly emptied the magma chamber 
B)  when sea floor spreading permitted seawater to flood into the newly formed volcanic rift 
C)  as a remnant of the "great flood" 
D)  a prehistoric eruption of Mount St. Helens 
A)  caldera collapse of the top of Mt. Mazama after the eruption 7700 years ago partly emptied the magma chamber 
B)  when sea floor spreading permitted seawater to flood into the newly formed volcanic rift 
C)  as a remnant of the "great flood" 
D)  a prehistoric eruption of Mount St. Helens

Question 17

How fast do hot fluid basalt flows typically advance?

Accepted Answer

A)   100 m/second 
C)  10 to 300 m/hour 
D)  > 30 km/hour 
A)   100 m/second 
C)  10 to 300 m/hour 
D)  > 30 km/hour

Question 18

Which statement best describes the big Hawaiian volcanoes?

Accepted Answer

A)  They lie directly above an active subduction zone where the Pacific plate is sinking into the mantle. 
B)  They lie along the crest of the East Pacific Rise, a mid- ocean ridge or spreading centre. 
C)  They are situated in the interior of a large, Pacific plate above a mantle plume deep in the mantle. 
D)  They lie directly above a transform plate boundary that cuts deeply into the mantle. 
A)  They lie directly above an active subduction zone where the Pacific plate is sinking into the mantle. 
B)  They lie along the crest of the East Pacific Rise, a mid- ocean ridge or spreading centre. 
C)  They are situated in the interior of a large, Pacific plate above a mantle plume deep in the mantle. 
D)  They lie directly above a transform plate boundary that cuts deeply into the mantle.

Question 19

What volcanoes dominate in the Galapagos, Iceland, and Kenya?

Accepted Answer

A)  stratospheric 
B)  shield 
C)  composite cone 
D)  cinder cones 
A)  stratospheric 
B)  shield 
C)  composite cone 
D)  cinder cones

Question 20

Which of the following best describes Shiprock, a famous volcanic feature in New Mexico which is sacred to the Navaho?

Accepted Answer

A)  an extinct, highly symmetrical, composite cone 
B)  a very recently active, basaltic cinder cone 
C)  an erosionally resistant volcanic neck, remains of a volcanic pipe, and radiating dykes 
D)  an extinct, massive, rhyolitic shield volcano 
A)  an extinct, highly symmetrical, composite cone 
B)  a very recently active, basaltic cinder cone 
C)  an erosionally resistant volcanic neck, remains of a volcanic pipe, and radiating dykes 
D)  an extinct, massive, rhyolitic shield volcano

The 1943- 44 eruption of Paricutin in Mexico was characterized by which one of the following sets of volcanic phenomena?

The Columbia Plateau in Washington and Oregon is what type of volcanic feature?

How are the Icelandic volcanoes related to plate tectonics?

How do volcanic bombs originate?

What kind of volcano is Mount Garibaldi?

What type of volcano is shown in the diagram below?

Gas rich andesitic magmas generate composite cones made up of________ .

How are volcanic conduits formed?

Which one of the following statements concerning volcanic blocks and bombs is true?

Oxidized, reddish, vesicle rich, mafic lapilli that pile up to form cinder cones are called_______ .

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

Which of the following is associated with deep mantle plumes?

What natural disaster contributed to the disappearance of the Minoan civilization and gave rise to the legend of The Lost Island of Atlantis mentioned in Plato's writings?

Which one of the following statements is false?

Which kind of volcano is closely associated with convergent plate boundaries and subduction zones?

How was Crater Lake, Oregon formed?

How fast do hot fluid basalt flows typically advance?

Which statement best describes the big Hawaiian volcanoes?

What volcanoes dominate in the Galapagos, Iceland, and Kenya?

Which of the following best describes Shiprock, a famous volcanic feature in New Mexico which is sacred to the Navaho?

An Introduction to Geology and Plate Tectonics

Minerals: the Building Blocks of Rocks

Igneous Rocks

Volcanoes and Volcanic Processes

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

Earthquakes and Earths Interior

The Ocean Floor

Plate Tectonics: the Framework for Modern Geology

Mountain Building and Continental Frameworks

Mass Wasting: the Work of Gravity

Groundwater

Glaciers and Glaciation

Deserts and Winds

Shorelines

Mineral and Energy Resources

Filters

Exam 15: Running Water

The 1943- 44 eruption of Paricutin in Mexico was characterized by which one of the following sets of volcanic phenomena?

The Columbia Plateau in Washington and Oregon is what type of volcanic feature?

How are the Icelandic volcanoes related to plate tectonics?

How do volcanic bombs originate?

What kind of volcano is Mount Garibaldi?

What type of volcano is shown in the diagram below?

Gas rich andesitic magmas generate composite cones made up of________ .

How are volcanic conduits formed?

Which one of the following statements concerning volcanic blocks and bombs is true?

Oxidized, reddish, vesicle rich, mafic lapilli that pile up to form cinder cones are called_______ .

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

Which of the following is associated with deep mantle plumes?

What natural disaster contributed to the disappearance of the Minoan civilization and gave rise to the legend of The Lost Island of Atlantis mentioned in Plato's writings?

Which one of the following statements is false?

Which kind of volcano is closely associated with convergent plate boundaries and subduction zones?

How was Crater Lake, Oregon formed?

How fast do hot fluid basalt flows typically advance?

Which statement best describes the big Hawaiian volcanoes?

What volcanoes dominate in the Galapagos, Iceland, and Kenya?

Which of the following best describes Shiprock, a famous volcanic feature in New Mexico which is sacred to the Navaho?

An Introduction to Geology and Plate Tectonics

Minerals: the Building Blocks of Rocks

Igneous Rocks

Volcanoes and Volcanic Processes

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

Earthquakes and Earths Interior

The Ocean Floor

Plate Tectonics: the Framework for Modern Geology

Mountain Building and Continental Frameworks

Mass Wasting: the Work of Gravity

Groundwater

Glaciers and Glaciation

Deserts and Winds

Shorelines

Mineral and Energy Resources

Filters