Question 1

What is the direct control on whether a volcano will erupt violently or quietly send out a few flows?

Accepted Answer

A) the composition of the magma, its temperature, and dissolved gas content 
B) the duration of the quiet interval since its last violent eruption 
C) what the total volume of the volcano has at the time of eruption 
D) the population density 
A) the composition of the magma, its temperature, and dissolved gas content 
B) the duration of the quiet interval since its last violent eruption 
C) what the total volume of the volcano has at the time of eruption 
D) the population density

Question 2

Which was the most powerful, explosive volcanic eruption of historic time?

Accepted Answer

A) Mt.Pele, Martinique, 1902 
B) Vesuvius, Italy, 79 A.D. 
C) Tambora, Indonesia, 1815 
D) Nevado del Ruiz, Columbia, 1985 
A) Mt.Pele, Martinique, 1902 
B) Vesuvius, Italy, 79 A.D. 
C) Tambora, Indonesia, 1815 
D) Nevado del Ruiz, Columbia, 1985

Question 3

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.

Accepted Answer

A) silica content 
B) temperature 
C) dissolved gases 
D) pressure 
A) silica content 
B) temperature 
C) dissolved gases 
D) pressure

Question 4

The recent (geologically)volcanic activity in Yellowstone National Park is ________.

Accepted Answer

A) related to plate subduction 
B) related to a divergent plate boundary 
C) related to a transform plate boundary 
D) related to intraplate, mantle plume volcanism 
A) related to plate subduction 
B) related to a divergent plate boundary 
C) related to a transform plate boundary 
D) related to intraplate, mantle plume volcanism

Question 5

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

Question 6

How was Crater Lake, Oregon formed?

Accepted Answer

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

Question 7

How are volcanic conduits formed?

Accepted Answer

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

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.

Accepted Answer

A) ash 
B) crystals 
C) lapilli 
D) blocks 
A) ash 
B) crystals 
C) lapilli 
D) blocks

Question 9

What term denotes the large volcanic depression occupied by Crater Lake, Oregon?

Accepted Answer

The answer of What term denotes the large volcanic depression...

Question 10

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.

Accepted Answer

A) Crater Lake 
B) Mount Mazama 
C) Wizard Island 
D) Krakatoa 
A) Crater Lake 
B) Mount Mazama 
C) Wizard Island 
D) Krakatoa

Question 11

What term denotes a basaltic lava flow covered with angular, clinkery, congealed lava rubble?

Accepted Answer

The answer of What term denotes a basaltic lava flow...

Question 12

How fast do hot fluid basalt flows typically advance?

Accepted Answer

A)  30 km/hour 
D) > 100 m/second 
A)  30 km/hour 
D) > 100 m/second

Question 13

Which two factors tend to increase the explosive potential of a magma body beneath a volcano?

Accepted Answer

A) high viscosity and dissolved gas 
B) high viscosity; low dissolved gas content 
C) low silica content, low viscosity 
D) low viscosity; low dissolved gas content 
A) high viscosity and dissolved gas 
B) high viscosity; low dissolved gas content 
C) low silica content, low viscosity 
D) low viscosity; low dissolved gas content

Question 14

Which one of the following is made of abundant pyroclastic materials?

Accepted Answer

A) rhyolite dome 
B) basaltic shield volcano 
C) composite volcano or stratovolcano 
D) fissure-related flood basalts 
A) rhyolite dome 
B) basaltic shield volcano 
C) composite volcano or stratovolcano 
D) fissure-related flood basalts

Question 15

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

Question 16

The ________ ocean basin is rimmed by the most subduction zones.

Accepted Answer

A) Atlantic 
B) Indian 
C) Pacific 
D) Arctic 
A) Atlantic 
B) Indian 
C) Pacific 
D) Arctic

Question 17

Which kind of eruptive activity is most likely to be highly explosive?

Accepted Answer

A) lava flows from a large shield volcano on an oceanic island 
B) fissure eruptions feeding lava to flood basalt accumulations 
C) eruptions of big, continental margin, composite volcanoes 
D) lava flows from a large cinder cone complex 
A) lava flows from a large shield volcano on an oceanic island 
B) fissure eruptions feeding lava to flood basalt accumulations 
C) eruptions of big, continental margin, composite volcanoes 
D) lava flows from a large cinder cone complex

Question 18

Dissolved gases may compose up to a few percent by weight of a magma.

Accepted Answer

A) True 
 B)False

Question 19

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

Accepted Answer

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

Question 20

How far did erupted materials travel and effect cars and trees during the last major eruption of Mount Merapi?

Accepted Answer

A) 240 kilometres away from the volcano 
B) 12,000 metres into the Stratosphere 
C) approximately 1200 kilometres into India and Nepal 
D) around the world for several days 
A) 240 kilometres away from the volcano 
B) 12,000 metres into the Stratosphere 
C) approximately 1200 kilometres into India and Nepal 
D) around the world for several days

What is the direct control on whether a volcano will erupt violently or quietly send out a few flows?

Which was the most powerful, explosive volcanic eruption of historic time?

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.

The recent (geologically)volcanic activity in Yellowstone National Park is ________.

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?

How was Crater Lake, Oregon formed?

How are volcanic conduits formed?

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.

What term denotes the large volcanic depression occupied by Crater Lake, Oregon?

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.

What term denotes a basaltic lava flow covered with angular, clinkery, congealed lava rubble?

How fast do hot fluid basalt flows typically advance?

Which two factors tend to increase the explosive potential of a magma body beneath a volcano?

Which one of the following is made of abundant pyroclastic materials?

How are the Icelandic volcanoes related to plate tectonics?

The ________ ocean basin is rimmed by the most subduction zones.

Which kind of eruptive activity is most likely to be highly explosive?

Dissolved gases may compose up to a few percent by weight of a magma.

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

How far did erupted materials travel and effect cars and trees during the last major eruption of Mount Merapi?

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 is the direct control on whether a volcano will erupt violently or quietly send out a few flows?

Which was the most powerful, explosive volcanic eruption of historic time?

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.

The recent (geologically)volcanic activity in Yellowstone National Park is ________.

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?

How was Crater Lake, Oregon formed?

How are volcanic conduits formed?

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.

What term denotes the large volcanic depression occupied by Crater Lake, Oregon?

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.

What term denotes a basaltic lava flow covered with angular, clinkery, congealed lava rubble?

How fast do hot fluid basalt flows typically advance?

Which two factors tend to increase the explosive potential of a magma body beneath a volcano?

Which one of the following is made of abundant pyroclastic materials?

How are the Icelandic volcanoes related to plate tectonics?

The ________ ocean basin is rimmed by the most subduction zones.

Which kind of eruptive activity is most likely to be highly explosive?

Dissolved gases may compose up to a few percent by weight of a magma.

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

How far did erupted materials travel and effect cars and trees during the last major eruption of Mount Merapi?

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