Final
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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show | True
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show | False
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show | True
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(T/F) The geothermal gradient is the rate at which pressure increases with increasing depth beneath the surface. | show 🗑
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(T/F) Mafic igneous rocks are silica-poor. | show 🗑
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show | True
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show | True
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(T/F) A pluton is an igneous structure that crystallized at very shallow depths. | show 🗑
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show | True
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(T/F) An ultramafic rock is composed almost entirely of quartz. | show 🗑
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(T/F) The geothermal gradient for a volcanic region is greater than that for the continental interior. | show 🗑
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(T/F) Pegmatites are extremely coarse-grained igneous rocks. | show 🗑
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show | True
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Igneous rocks may be either ____ if they form on or near Earth's surface, or ___ if they solidify under ground. | show 🗑
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______ igneous rocks, like gabbro and basalt, are silica-deficient with high magnesium and iron. | show 🗑
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show | Granite
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Fine-grained igneous rocks (grains < 1.0 mm) that have small grains cooled rapidly and are likely to be _______. | show 🗑
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show | sill
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show | Porphyritic
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Both andesite and ___ are composed of feldspars and 30% to 50% ferromagnesian minerals | show 🗑
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___ are igneous rocks that are silica-deficient but high in iron and magnesium. | show 🗑
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Igneous rocks that are silica-rich with high aluminum, sodium, and potassium are _____ rocks. | show 🗑
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A ______ is an intrusive structure that formed from magma that solidified within the "throat" of a volcano. | show 🗑
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The most common minerals in a granite are the ______. | show 🗑
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show | Granite
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show | increases
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show | Yellowstone
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show | silicic rocks
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show | divergent plate boundaries
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The crust beneath the world's oceans is mafic ________. | show 🗑
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How is a sill different from a dike? | show 🗑
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show | gabbro
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show | decompression melting
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What is the sequence of crystallization along the discontinuous branch of Bowen's reaction series? | show 🗑
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show | flows less easily
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. Imagine two magmas that are identical in all respects (for example, same chemistry, pressure, volume) except that one magma is hotter than the other. Which magma will have the higher viscosity? | show 🗑
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What is the process through which magma differentiation takes place? | show 🗑
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Created by:
Thomas.Siu
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