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Exam 9: Volcanoes and Other Igneous Activity

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Question 21

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What is the name of the chain of volcanoes below that forms at an oceanic to oceanic plate boundary?

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Question 22

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The Icelandic volcanoes are related to plate tectonics because ________.

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

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Question 23

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Matching. Please choose from one of the following answers. -the big volcanoes of Hawaii

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

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

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

Volcanic bombs originate ________.

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

Which region has the greatest concentration of currently active volcanoes?

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

Powerful, explosive, volcanic eruptions can result in climatic cooling for millions of years following the eruption.

Another term for a volcanic mudflow is a(n) ________.

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

Paricutin is an example of a ________.

In general, cinder cones are much larger than shield volcanoes.

On the blanks provided, write the name of the feature labeled. On the same blank, indicate with capital letters whether the feature is concordant (C) or discordant (D) and whether the feature is tabular (T) or massive (M).

A ________ is the largest discordant body of intrusive, igneous rock.

Which one of the following best describes volcanism in the Cascade Range, northwestern United States?

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

Kilauea is an example of a ________.