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Cards In This Set
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Name three major groups of rocks.
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Igneous, metamorphic and sedimentary
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What characteristics do geologists look for when observing rock samples?
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Texture, color, minerals composition and origin
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The look and feel of the rock's surface is called_________________.
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Texture
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The 20 minerals that make up most of the rocks of Earth's crust are known as ____________.
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Rock forming minerals
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The particles of minerals or other rocks that make up a rock are called ______________.
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Grains
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If the grain property is large and easy to see the testure is ______________________.
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Coarse grained
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If the grain property is very small, almost microscopic, then the texture is ________________________.
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Fine grained
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_______________ is dark colored and has low silica content.
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Basalt
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_____________ is light colored and has a high silica content.
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Granite
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Igneous rocks are classified into two groups _____________ and ______________.
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Extrusive and intrusive
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What is the most common intrusive rock?
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Granite
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What is the most common extrusive rock?
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Basalt
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Igneous rock that formed from lava that erupted onto Earth's surface is called _______________.
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Extrusive
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Igneous rock that formed from magma below Earth's surface is called _____________ rock.
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Intrusive
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Put these words in the correct order: compaction, deposition, cementation and erosion.
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Erosion, deposition, compaction, cementation
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