Question 1

The largest types of volcanoes are the_______ .

Accepted Answer

A)   cinder cones
B)   composite cones
C)   stratocones
D)   shield volcanoesE) B) and D)
F) C) and D)

Question 2

Which of the following statements best describes the big Hawaiian volcanoes?

Accepted Answer

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

Question 3

In 1980,_______ became the first Cascade Range volcano to erupt since Mt. Lassen in 1915- 16.

Accepted Answer

A)   Mt. Rainier
B)   Kilauea
C)   Mt. St. Helens
D)   Mt. ShastaE) B) and D)
F) B) and C)

Question 4

Which of the following factors help determine whether a volcanic eruption will be violent or relatively quiescent?

Accepted Answer

A)   composition of the magma
B)   temperature of the magma
C)   amount of dissolved gas in the magma
D)   all of theseE) A) and C)
F) B) and D)

Question 5

What volcanic events formed Crater Lake, Oregon? When did they take place?

Accepted Answer

A)   Landslides and volcanic mudflows dammed the Mazama River 500 years ago.
B)   The crater of a large, extinct cinder cone filled with water 5 million years ago.
C)   Caldera collapse followed major ash and pyroclastic- flow eruptions 6000 years ago.
D)   A powerful explosion blew away the top of a stratovolcano 10 million years ago.E) A) and B)
F) B) and D)

Question 6

Which statement about the May, 1980, eruption of Mount St. Helens is false?

Accepted Answer

A)   The most powerful explosive event was preceded by a massive landslide.
B)   During the eruptive period, the mountain peak was substantially built up by new lava flows and pyroclastic debris.
C)   Plumes of ash rose high into the atmosphere during the major eruptive events.
D)   Mudflows accompanied the major eruptive events.E) A) and B)
F) A) and C)

Exam 6: Volcanoes and Other Igneous Activity

What volcanic events formed Crater Lake, Oregon? When did they take place?

Correct Answer
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In 1980,_______ became the first Cascade Range volcano to erupt since Mt. Lassen in 1915- 16.

Correct Answer
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The largest types of volcanoes are the_______ .

Correct Answer
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Which of the following statements best describes the big Hawaiian volcanoes?

Correct Answer
verified

Which of the following factors help determine whether a volcanic eruption will be violent or relatively quiescent?

Correct Answer
verified

Which statement about the May, 1980, eruption of Mount St. Helens is false?

Correct Answer
verified

Exam 6: Volcanoes and Other Igneous Activity

What volcanic events formed Crater Lake, Oregon? When did they take place?

Correct AnswerverifiedShow Answer

In 1980,_______ became the first Cascade Range volcano to erupt since Mt. Lassen in 1915- 16.

Correct AnswerverifiedShow Answer

The largest types of volcanoes are the_______ .

Correct AnswerverifiedShow Answer

Which of the following statements best describes the big Hawaiian volcanoes?

Correct AnswerverifiedShow Answer

Which of the following factors help determine whether a volcanic eruption will be violent or relatively quiescent?

Correct AnswerverifiedShow Answer

Which statement about the May, 1980, eruption of Mount St. Helens is false?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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