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23 Cards in this Set
- Front
- Back
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When an igneous rock cools very quickly when it forms, it may have what type of texture?
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shiny & smooth; no visible grain
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When all the grains in a rock are large and easy to see, the rock is described as...
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coarse grained
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This type of rock forms from the cooling of magma below the surface or lava at the surface is...
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igneous
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Where does most metamorphic rock form?
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deep under ground
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________ is igneous rock that formed from lava that erupted onto Earth's surface.
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extrusive rock
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The most abundant intrusive rock in the continental crust is...
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granite
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__________ is an igneous rock that has large crystals surrounded by smaller crystals.
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porphyry
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__________ is a process by which sediment settles out of the water or wind carrying it.
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deposition
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What do geologists determine to describe a rock's texture?
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size, shape and pattern of the rock's grain
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A sedimentary rock made of of rock fragments with rounded edges is called ___________.
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conglomorate
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What can heat and pressure deep beneath Earth's surface change any rock into?
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metamorphic rock
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The sedimentary rock that is formed when water deposits tiny particles of clay in very thin, flat layers is called...
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shale
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Where does the heat come from that changes a rock into metamorphic rock?
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mantle
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What do geologists classify metamorphic rock according to?
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the arrangement of the grain that make up the rock
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The texture of a metamorphic rock that has grains arranged in parallel layers is described as...
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foliated
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Are metamorphic rocks that are nonfoliated split into layers?
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do not split into layers
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What is the rock cycle?
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a series of processes on earth's surface and in the crust's mantle that slowly changes rocks from one kind to another
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Is smelting a possible stage in the rock cycle?
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No
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Which step in the rock cycle would be required to change granite into sandstone?
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erosion
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__________ and __________ are the two most useful metamorphic rocks.
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marble and slate
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Sedimentary rock breccia is made up of what?
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rock fragments with sharp edges
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The process in which dissolved minerals crystallize and glue particles of sediment together is...
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cementation
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Generally, a rock is made up of what?
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a mixture of minerals and other materials
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