Question 1

Lava tubes would be more likely to be form at a shield volcano like Kilauea than at a composite volcano like Mount St. Helens.

Accepted Answer

A) True 
 B)False

Question 2

Discuss the six different tectonic settings in which volcanism can occur, and why magma is produced at each location.

Accepted Answer

Volcanoes can be triggered by the subduc...

Question 3

The viscosity of magma increases with an increasing percentage of silica.

Accepted Answer

A) True 
 B)False

Question 4

Shield volcanoes consist of many successive layers of ________ and lack significant amounts of pyroclastic debris.

Accepted Answer

The answer of Shield volcanoes consist of many successive layers...

Question 5

How are Iceland's volcanoes related to plate tectonics?

Accepted Answer

A)  They lie on an oceanic spreading center where two plates are diverging.
B)  They lie on a continental rift where two plates are diverging.
C)  They lie on a subduction zone where two plates are converging.
D)  They lie on a continent with a hot spot below it.E) A) and B)
F) None of the above

Question 6

The difference between lava and magma is lava is found ________ Earth's surface; whereas magma is ________ the surface.

Accepted Answer

The answer of The difference between lava and magma is...

Question 7

What caused the many small holes that are seen in this sample of scoria?

Accepted Answer

A)  impacts by volcanic bombs
B)  dissolving away of minerals
C)  degassing of volatiles
D)  raindropsE) A) and D)
F) A) and C)

Question 8

Crater Lake in Oregon actually occupies a caldera, not a crater.

Accepted Answer

A) True 
 B)False

Question 9

A(n)________ is a dangerous, fast moving, hot, turbulent cloud of volcanic gases and solid particles.

Accepted Answer

pyroclasti...

Question 10

________ lava is the most abundant type erupted at oceanic spreading centers.

Accepted Answer

A)  Rhyolitic
B)  Andesitic
C)  Basaltic
D)  GranititcE) All of the above
F) B) and D)

Question 11

A small, igneous rock body emplaced at shallow depths by uplift and arching of the overlying, older strata is a(n)________.

Accepted Answer

The answer of A small, igneous rock body emplaced at...

Question 12

A volcanic island arc is the result of ________.

Accepted Answer

A)  subduction of continental crust underneath oceanic crust
B)  subduction of oceanic crust underneath oceanic crust
C)  subduction of continental crust underneath continental crust
D)  subduction of oceanic crust underneath continental crustE) A) and B)
F) B) and C)

Question 13

Hawaii is located on a plate boundary.

Accepted Answer

A) True 
 B)False

Question 14

Pick three of the following volcanic regions and assign it to one of the three types of volcanism (convergent plate boundaries, divergent plate boundaries, or intraplate volcanism):
a. Crater Lake
b. Hawaii's Kilauea
c. Mount St. Helens
d. East African Rift
e. Yellowstone
f. Vesuvius
g. Deccan Plateau
h. Iceland
Give a brief explanation of how the volcanoes formed at each of the three locations you select.

Accepted Answer

Answers will vary, and will no doubt ref...

Question 15

Which of the following best describes the bedrock in the Sierra Nevada Mountains in California?

Accepted Answer

A)  laccolith made of basalt
B)  batholith made of granite
C)  dike made of andesite
D)  cinder coneE) B) and D)
F) None of the above

Question 16

Parícutin is an example of a ________.

Accepted Answer

A)  shield volcano
B)  cinder cone
C)  composite volcano
D)  volcanic neckE) B) and D)
F) All of the above

Question 17

Three of the following statements about the May, 1980 eruption of Mount St. Helens are true. Which one is false?

Accepted Answer

A)  During the eruptive period, the mountain peak was substantially enlarged by new lava flows and pyroclastic debris.
B)  Plumes of ash rose high into the atmosphere during the major eruptive events.
C)  Mudflows called lahars accompanied the major eruptive events.
D)  The most powerful explosive event was preceded by a massive landslide.E) A) and D)
F) None of the above

Question 18

The most violent volcanic activity is associated with ________.

Accepted Answer

A)  the Mid-Atlantic Ridge
B)  composite volcanoes
C)  cinder cones
D)  shield volcanoesE) None of the above
F) All of the above

Question 19

Repeated eruptions of relatively fluid lava from fissures can eventually cause an area to be covered by flood basalts.

Accepted Answer

A) True 
 B)False

Question 20

This is a photograph of Augustine volcano in Alaska. Judging by its shape, and the eruptive activity in the photo, what kind of volcano is it?

Accepted Answer

A)  shield volcano
B)  cinder cone
C)  composite volcano
D)  volcanic neckE) B) and C)
F) B) and D)

Exam 7: Volcanoes and Other Igneous Activity

Repeated eruptions of relatively fluid lava from fissures can eventually cause an area to be covered by flood basalts.

Correct Answer
verified

This is a photograph of Augustine volcano in Alaska. Judging by its shape, and the eruptive activity in the photo, what kind of volcano is it?

Correct Answer
verified

Lava tubes would be more likely to be form at a shield volcano like Kilauea than at a composite volcano like Mount St. Helens.

Correct Answer
verified

Crater Lake in Oregon actually occupies a caldera, not a crater.

Correct Answer
verified

A volcanic island arc is the result of ________.

Correct Answer
verified

Hawaii is located on a plate boundary.

Correct Answer
verified

Correct Answer
verified
Answers will vary, and will no doubt ref...
View Answer

What caused the many small holes that are seen in this sample of scoria?

Correct Answer
verified

A(n)________ is a dangerous, fast moving, hot, turbulent cloud of volcanic gases and solid particles.

Correct Answer
verified
pyroclasti...
View Answer

How are Iceland's volcanoes related to plate tectonics?

Correct Answer
verified

The viscosity of magma increases with an increasing percentage of silica.

Correct Answer
verified

Three of the following statements about the May, 1980 eruption of Mount St. Helens are true. Which one is false?

Correct Answer
verified

The difference between lava and magma is lava is found Earth's surface; whereas magma is the surface.

Correct Answer
verified

Discuss the six different tectonic settings in which volcanism can occur, and why magma is produced at each location.

Correct Answer
verified
Volcanoes can be triggered by the subduc...
View Answer

________ lava is the most abundant type erupted at oceanic spreading centers.

Correct Answer
verified

Parícutin is an example of a ________.

Correct Answer
verified

Which of the following best describes the bedrock in the Sierra Nevada Mountains in California?

Correct Answer
verified

A small, igneous rock body emplaced at shallow depths by uplift and arching of the overlying, older strata is a(n)________.

Correct Answer
verified

The most violent volcanic activity is associated with ________.

Correct Answer
verified

Shield volcanoes consist of many successive layers of ________ and lack significant amounts of pyroclastic debris.

Correct Answer
verified

Exam 7: Volcanoes and Other Igneous Activity

Repeated eruptions of relatively fluid lava from fissures can eventually cause an area to be covered by flood basalts.

Correct AnswerverifiedShow Answer

This is a photograph of Augustine volcano in Alaska. Judging by its shape, and the eruptive activity in the photo, what kind of volcano is it?

Correct AnswerverifiedShow Answer

Lava tubes would be more likely to be form at a shield volcano like Kilauea than at a composite volcano like Mount St. Helens.

Correct AnswerverifiedShow Answer

Crater Lake in Oregon actually occupies a caldera, not a crater.

Correct AnswerverifiedShow Answer

A volcanic island arc is the result of ________.

Correct AnswerverifiedShow Answer

Hawaii is located on a plate boundary.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedAnswers will vary, and will no doubt ref...View AnswerShow Answer

What caused the many small holes that are seen in this sample of scoria?

Correct AnswerverifiedShow Answer

A(n)________ is a dangerous, fast moving, hot, turbulent cloud of volcanic gases and solid particles.

Correct Answerverifiedpyroclasti...View AnswerShow Answer

How are Iceland's volcanoes related to plate tectonics?

Correct AnswerverifiedShow Answer

The viscosity of magma increases with an increasing percentage of silica.

Correct AnswerverifiedShow Answer

Three of the following statements about the May, 1980 eruption of Mount St. Helens are true. Which one is false?

Correct AnswerverifiedShow Answer

The difference between lava and magma is lava is found ________ Earth's surface; whereas magma is ________ the surface.

Correct AnswerverifiedShow Answer

Discuss the six different tectonic settings in which volcanism can occur, and why magma is produced at each location.

Correct AnswerverifiedVolcanoes can be triggered by the subduc...View AnswerShow Answer

________ lava is the most abundant type erupted at oceanic spreading centers.

Correct AnswerverifiedShow Answer

Parícutin is an example of a ________.

Correct AnswerverifiedShow Answer

Which of the following best describes the bedrock in the Sierra Nevada Mountains in California?

Correct AnswerverifiedShow Answer

A small, igneous rock body emplaced at shallow depths by uplift and arching of the overlying, older strata is a(n)________.

Correct AnswerverifiedShow Answer

The most violent volcanic activity is associated with ________.

Correct AnswerverifiedShow Answer

Shield volcanoes consist of many successive layers of ________ and lack significant amounts of pyroclastic debris.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Answers will vary, and will no doubt ref...
View Answer

Correct Answer
verified

Correct Answer
verified
pyroclasti...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The difference between lava and magma is lava is found Earth's surface; whereas magma is the surface.

Correct Answer
verified

Correct Answer
verified
Volcanoes can be triggered by the subduc...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified