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31 Cards in this Set
- Front
- Back
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Are rocks made of a mixture of minerals.
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Rock-forming mineral
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Light-colored rock that has high silica content.
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Granite
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Dark-colored rock that is low in silica.
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Basalt
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Particles that make most rocks.
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Grains
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Is the look and feel of the rock's surface.
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Texture
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Forms from the cooling of magma or lava.
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Igneous rock
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Forms when particles of other rocks or the remains of plants and animals are pressed and cemented together.
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Sedimentary rock
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Forms when an existing rock is changed by heat, pressure, or chemical reactions.
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Metamorphic rock
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igneous rock formed from lava that erupted onto Earth's surface
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Extrusive rock
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Igenoues rock when magna harded beneath earth's surface
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Intrursive Rock
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is small solid pieces of material that come from rocks or living things
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Sediment
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running water, wind, or ice loosen and carry away fragments of rock
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Erosion
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process by which sediment settles out of the water or wind carrying it
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deposition
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process that presses sediments together
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Compaction
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the process in which dissolved minerals crystallize and glue particles of sediment together
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cementation
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is a sedimentary rock that forms when rock fragments are squeezed together
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clastic rocks
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forms where the remains of plants and animals are deposited in the thick layers
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organic rock
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minerals that are dissolved in a sloution crystallize
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chemical rock
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Term used to describe metamorphic rocks that have grains arranged in parallel layers or bands.
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Foliated
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HOw do geoligist classify metamorphic rocks?
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By the arrangement of the grains that make up the rocks. Foilated or non foilated
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What is a non foliated rock?
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a rock who;s grains are arranged randomly
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How are metamorhpic rocks used?
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flooring, roofing, chalkboards, Lincoln Memorial is made of Metamorpic rock.
Marble. |
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What characeristics do geoligst use to identify rocks
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color, texture, mineral compostion
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Geolisgist classify rocks into three major groups
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igneous rock, sedimentary rock, metamorphic
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Tell how Igneous rock forms,
Sedimentary rocks form Metamorphic rock forms |
Igneous-magma or laval cools and hardens.
Sedimentary: when pieces of rocks are pressed and cemented together. Metamorphic rock: other rocks that are changed by heat and pressure. |
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Igneous rocks are classified by
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origin, texture, and mineral compostion.
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Igneous rocks are used to :
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building material, such as granite, statues,used to bridges
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What are three major types of sedimentary rocks?
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Clastic, Oragnic, Chemical
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HOw are sedimentary rocks used
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sandstone and limestone
White House is built of Sandstone |
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What are the steps in sedimentary rocks layering
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1.erosion
2. deposition 3. compaction 4. cementation |
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HOw are metamorphic rocks used?
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Lincon Memorial
Marble |
