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21 Cards in this Set
- Front
- Back
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_____is a mixture of crystals of one or more minerals.
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rock
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____(S) are the remainsof once living things.
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fossils
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the three main types of rocks are____,____,____.
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igneous, sedimentary, and metamorphic.
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when magma flows out onto the Earth's surface, it is called_____.
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lava
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________is the process by which one rock type changes into anthor.
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the rock cycle
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______rock is a rock that forms when sediments are compacted and cemented togther.
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sedimentary
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______rock is rock that forms when the texture and composition of a peexisting rockis changed by heat or pressure deep underground.
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metamorphic
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Two important criticistics are _______/
______ is how you can classify rocks |
composition and texture
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The minerals a rock is made of determine the _____of the rock
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composition
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The____of a rock is determined by the sizes, shapes, and positions of the grains of which it is made.
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texture
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Rocks that are made entirely of small grains such as slit or clay particles are_______grained.
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fine
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Rocks that have a texture between fine and coarse grained are _______ texture.
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medium grained
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Three ways magma can form are when ______,when rock is______/(or)_______, or when rock changes_______
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1.heated
2.when pressure is released (or)when pressure is released 3.composition |
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The lightweight rocks are called______.
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felsic
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rocks that are rich in iron, magnesium, and calcium are called______.
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mafic
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when magma cools beneath the Earth's surface,the resulting rock is called____________.
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intrusive coarse-grained
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_____are large balloon shaped intrusive formations that result when magma cools at great depths.
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plutons
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Igneous rock that forms on the Earth's surface is called _______.
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extrusive
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When lava erupts from a valcano a formation call a _______ is made.
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lava flow
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Sometimes lava erupts from long cracks in the Earth's surface is called ________.
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fissures
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When a large amount of lava flows out of fissure it can cover a vast area forming a plain called a______
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lava plateau
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