Question 1

_______magma is the most abundant type of magma erupted on Earth.

Accepted Answer

A)   Granitic
B)   Pegmatitic
C)   Andesitic
D)   BasalticE) A) and C)
F) All of the above

Question 2

The most dangerous of the volcano types is the _______.

Accepted Answer

A)   fissure eruption
B)   stratovolcano
C)   cinder cone
D)   shield volcanoE) B) and C)
F) C) and D)

Question 3

It has been said that living near a Hawaiian volcano puts buildings in danger but not humans. Why is that the case?

Accepted Answer

A)   Hawaiian volcanoes are not explosive, and the lavas flow at a slow enough speed for humans to get out of the way.
B)   Hawaiian volcanoes are all dormant, so there is no danger of an eruption.
C)   Hawaiian volcanoes are hot enough to damage buildings, but not hot enough to affect a human.
D)   While there are some buildings built near volcanoes, no humans live anywhere close to a Hawaiian volcano.E) A) and C)
F) C) and D)

Question 4

The greatest danger from pyroclastic flows is _______ .

Accepted Answer

A)   being smothered by hot gases and ash
B)   being incinerated by the hot gas and entrained magma
C)   being buried in ash
D)   not significant because they move so slowly they can be avoidedE) A) and D)
F) A) and C)

Question 5

Magmas are the product of melting in the deep part of the earth that forms a layer of partially molten material called the_______ .

Accepted Answer

A)   crust
B)   lithosphere
C)   core
D)   asthenosphereE) B) and C)
F) C) and D)

Question 6

A geologist is working in an area of old volcanic rocks exposed by erosion. He finds a large rock outcrop that contains flatlying gravels in the base of the outcrop. These gravels are overlain by basalt that forms a series of layers representing flows. The uppermost basalt lava flows have a dip of about 10 degrees to the west. What does this outcrop record?

Accepted Answer

A)   Gravels were initially deposited in a river valley and a cinder cone was erupted, damming the valley, before a cinder cone formed.
B)   Basalt flows formed above a series of gravels, filling a river valley.
C)   Basalt flows formed after gravels were deposited, covered the local terrain, and built a shield volcano with dips of about 10 degrees.
D)   You can't tell anything about the history of this region from this outcrop.E) All of the above
F) A) and D)

Question 7

Most granitic batholiths are generated_______ .

Accepted Answer

A)   along hot spot chains beneath continents, like a welder cutting through the continent to make a linear belt of intrusive granites
B)   along transform faults, which accounts for their linear geographic distribution
C)   where spreading ridges occur beneath continents
D)   as intrusions beneath composite volcanoes along convergent plate marginsE) All of the above
F) A) and B)

Question 8

Examine the words and/or phrases below and determine the relationship among the majority of words/phrases. Choose the option which does not fit the pattern.

Accepted Answer

A)   batholith
B)   dike
C)   sill
D)   calderaE) B) and D)
F) B) and C)

Question 9

Eruption columns, such as the one pictured above, are unstable and often collapse towards the Ground because_______ .

Accepted Answer

A)   they consist mostly of gases, which can cool and descend
B)   they are mostly large pyroclastics and these cannot be supported by rising air
C)   they are propelled by the eruption, as in the case of Pompeii
D)   they are mostly liquid lava flows being lifted by updraftsE) None of the above
F) B) and C)

Question 10

Compare and contrast the volcanoes of Alaska with the volcanoes of the Hawaiian islands.

Accepted Answer

Students should indicate that while both...

Question 11

Which magma type has the lowest viscosity?

Accepted Answer

A)   rhyolite
B)   basalt
C)   dacite
D)   andesiteE) All of the above
F) A) and B)

Question 12

Shield volcanoes have extensive deposits of _______.

Accepted Answer

A)   pillow basalts
B)   lava flows
C)   ash
D)   pyroclastic rocksE) All of the above
F) None of the above

Question 13

Explain the similarities and differences between the melting taking place at the mid- ocean ridge and at the zone.

Accepted Answer

Answers will vary but correct answers fo...

Question 14

Mount Pelée on the island of Martinique killed thousands of people in_______ .

Accepted Answer

A)   an ash fall that smothered the people living there
B)   a caldera collapse
C)   a pyroclastic flow, also called a nuee ardante Nuée Ardante
D)   a cinder cone eruptionE) A) and B)
F) All of the above

Question 15

Which of the following is a tabular intrusive body with subparallel intrusive contacts?

Accepted Answer

A)   dike
B)   columnar joints
C)   laccolith
D)   stockE) None of the above
F) B) and C)

Question 16

Mt. St. Helens in the U. S. and Mt. Fujiyama in Japan are examples of _______.

Accepted Answer

A)   calderas
B)   shield volcanoes
C)   cinder cones
D)   composite volcanoesE) B) and C)
F) None of the above

Question 17

The image shows the nature of melting at the Mid- Ocean Ridge. The image indicates that melting is_______ .

Accepted Answer

A)   only within the water
B)   only away from the Mid- Ocean Ridge
C)   localized below the Mid- Ocean Ridge
D)   widespread throughout the mantleE) A) and D)
F) All of the above

Question 18

The streamlined ropy flowing lava pictured here has both orange and black parts because .

Accepted Answer

A)   the black part is aa, while the orange is pahoehoe
B)   the top of the lava flow cools slower than the middle of the lava flow
C)   orange represents the cooler parts, which are below the surface
D)   the surface cools faster than the lava below, and is black in appearanceE) B) and C)
F) All of the above

Question 19

Mt. Rainier in Washington State is often thought to be the most hazardous volcano in the lower 48 states of the United States because_______ .

Accepted Answer

A)   the bodies indicate how rapidly the pyroclastic flows came, and this could be an indication of what could happen in the future
B)   the reason that the people did not survive was because they were lying down on the ground, so this can teach future residents to stand up when a pyroclastic flow comes
C)   there may be written records buried with the bodies that could be of use
D)   volcanoes never happen again in the same location, so it is an indicator that this area is now safeE) B) and C)
F) B) and D)

Question 20

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

Accepted Answer

A)   Orange represents the cooler parts, which are below the surface.
B)   The black part is aa, while the orange is pahoehoe.
C)   The surface cools faster than the lava below, and is black in appearance.
D)   The top of the lava flow cools slower than the middle of the lava flow.E) A) and C)
F) A) and B)

Exam 6: Volcanoes and Other Igneous Activity

Magmas are the product of melting in the deep part of the earth that forms a layer of partially molten material called the_______ .

Correct Answer
verified

Mt. St. Helens in the U. S. and Mt. Fujiyama in Japan are examples of _______.

Correct Answer
verified

Compare and contrast the volcanoes of Alaska with the volcanoes of the Hawaiian islands.

Correct Answer
verified
Students should indicate that while both...
View Answer

Eruption columns, such as the one pictured above, are unstable and often collapse towards the Ground because_______ .

Correct Answer
verified

The most dangerous of the volcano types is the _______.

Correct Answer
verified

Mount Pelée on the island of Martinique killed thousands of people in_______ .

Correct Answer
verified

The image shows the nature of melting at the Mid- Ocean Ridge. The image indicates that melting is_______ .

Correct Answer
verified

Mt. Rainier in Washington State is often thought to be the most hazardous volcano in the lower 48 states of the United States because_______ .

Correct Answer
verified

Most granitic batholiths are generated_______ .

Correct Answer
verified

The streamlined ropy flowing lava pictured here has both orange and black parts because .

Correct Answer
verified

Examine the words and/or phrases below and determine the relationship among the majority of words/phrases. Choose the option which does not fit the pattern.

Correct Answer
verified

It has been said that living near a Hawaiian volcano puts buildings in danger but not humans. Why is that the case?

Correct Answer
verified

Correct Answer
verified

The greatest danger from pyroclastic flows is _______ .

Correct Answer
verified

Shield volcanoes have extensive deposits of _______.

Correct Answer
verified

Explain the similarities and differences between the melting taking place at the mid- ocean ridge and at the zone.

Correct Answer
verified
Answers will vary but correct answers fo...
View Answer

Which of the following is a tabular intrusive body with subparallel intrusive contacts?

Correct Answer
verified

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

Correct Answer
verified

Which magma type has the lowest viscosity?

Correct Answer
verified

_______magma is the most abundant type of magma erupted on Earth.

Correct Answer
verified

Exam 6: Volcanoes and Other Igneous Activity

Magmas are the product of melting in the deep part of the earth that forms a layer of partially molten material called the_______ .

Correct AnswerverifiedShow Answer

Mt. St. Helens in the U. S. and Mt. Fujiyama in Japan are examples of _______.

Correct AnswerverifiedShow Answer

Compare and contrast the volcanoes of Alaska with the volcanoes of the Hawaiian islands.

Correct AnswerverifiedStudents should indicate that while both...View AnswerShow Answer

Eruption columns, such as the one pictured above, are unstable and often collapse towards the Ground because_______ .

Correct AnswerverifiedShow Answer

The most dangerous of the volcano types is the _______.

Correct AnswerverifiedShow Answer

Mount Pelée on the island of Martinique killed thousands of people in_______ .

Correct AnswerverifiedShow Answer

The image shows the nature of melting at the Mid- Ocean Ridge. The image indicates that melting is_______ .

Correct AnswerverifiedShow Answer

Mt. Rainier in Washington State is often thought to be the most hazardous volcano in the lower 48 states of the United States because_______ .

Correct AnswerverifiedShow Answer

Most granitic batholiths are generated_______ .

Correct AnswerverifiedShow Answer

The streamlined ropy flowing lava pictured here has both orange and black parts because .

Correct AnswerverifiedShow Answer

Examine the words and/or phrases below and determine the relationship among the majority of words/phrases. Choose the option which does not fit the pattern.

Correct AnswerverifiedShow Answer

It has been said that living near a Hawaiian volcano puts buildings in danger but not humans. Why is that the case?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The greatest danger from pyroclastic flows is _______ .

Correct AnswerverifiedShow Answer

Shield volcanoes have extensive deposits of _______.

Correct AnswerverifiedShow Answer

Explain the similarities and differences between the melting taking place at the mid- ocean ridge and at the zone.

Correct AnswerverifiedAnswers will vary but correct answers fo...View AnswerShow Answer

Which of the following is a tabular intrusive body with subparallel intrusive contacts?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which magma type has the lowest viscosity?

Correct AnswerverifiedShow Answer

_______magma is the most abundant type of magma erupted on Earth.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Students should indicate that while both...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Answers will vary but correct answers fo...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified