Understanding Earth

Geology/Geography/Oceanography/Atmospheric Sciences

Quiz 4 :

Igneous Rocks: Solids From Melts

Quiz 4 :

Igneous Rocks: Solids From Melts

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Which of the following best describes an andesite?
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B

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Which of the following pairs of intrusive and extrusive rocks have the same chemical composition?
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C

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Which of the following best describes a rock with 10-millimeter-long plagioclase crystals set in a fine-grained matrix of 0.5-millimeter-long crystals?
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C

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What geologist is credited with figuring out the origin of granite?
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What is the approximate silica content of granite?
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Which of the following igneous rocks has the lowest silica content?
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Which of the following properties does not depend on the chemical composition of an igneous rock/magma?
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Which of the following statements is true?
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Which of the following minerals is rarely found in felsic igneous rocks?
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Which of the following rocks is a volcanic rock made up of lithified pyroclastic material?
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Which of the following igneous rocks crystallizes at Earth's surface?
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What type of volcanic rock contains a large number of vesicles (bubbles)that form when gases escape from the solidifying melt?
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Which of the following best describes a rhyolite?
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Andesite is an example of a(n)__________ igneous rock.
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Which of the following igneous rocks does not consist of volcanic glass?
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Which of the following types of igneous rocks are rarely found as lavas?
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Felsic igneous rocks contain abundant __________ silicate minerals.
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Which of the following minerals is common in both felsic and mafic igneous rocks?
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Which of the following igneous rocks has the same chemical composition as basalt?
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Where would you expect to find the largest crystals in a lava flow?
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