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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| (T/F) Extrusive igneous rocks are typically fine grained because they crystallized slowly, deep below the Earth's surface. | show 🗑
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| (T/F) A dike is a discordant intrusive igneous structure. | show 🗑
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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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| show | True
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| show | True
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| (T/F) The sequence in which minerals crystallize in a cooling igneous melt is called Bowen's Reaction Series. | show 🗑
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| show | False
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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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| show | True
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| (T/F) Basaltic magmas crystallize at higher temperatures than granitic magmas. | show 🗑
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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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| A _______ is a tabular (thin but large area) intrusive body that is concordant (parallel to the host rock structure). | show 🗑
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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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| show | feldspars
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| ______ is the predominant igneous rock of the continents. | show 🗑
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| The melting point of a mineral generally _____ with increasing pressure (or depth). | show 🗑
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| Hawaii and __________ eruptions are related to intraplate igneous activity | show 🗑
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| On its slow journey through the crust, mafic magma evolves into intermediate magma by differentiation and assimilation of ______. | show 🗑
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| Most of the basalt and gabbro on the ocean floor is created at mid oceanic ridges, which are also ____. | show 🗑
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| show | basalt and gabbro
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| show | Sills are parallel to the layering in the country rock.
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| show | gabbro
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| show | decompression melting
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| show | olivine, pyroxene, amphibole, mica
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| Viscosity is a property of a fluid that relates to how easily the fluid flows. A material that is viscous __. | show 🗑
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| show | The cooler magma will be more viscous.
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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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