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19 Cards in this Set
- Front
- Back
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Something used to represent an object or idea
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model
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The outer most and thinnest layer of the Earth
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crust
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A thick layer of rock between the crust and the core of the Earth
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mantle
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The center of the earth that is made of solid nickel and iron.
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inner core
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A molten layer that surround the inner core of the Earth
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outer core
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The age of an object relative to that of other objects, shown by the order of layers of rocks.
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relative age
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A fossil used to determine the relative age of a rock.
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index fossils
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The actual age of an object
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absolute age
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A bend in the layer of rock caused by forces within the Earth.
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fold
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A upward fold of rock layers (frown mouth)
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anticline
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A downward fold of rock layers. (smile mouth)
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syncline
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Carrying away of weathered rocks
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erosion
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A break in rock along which rocks have moved
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fault
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A type of mountain that forms when forces within the earth (magma) push upward.
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dome
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Large pieces of crust that float on the mantle
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plates
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Occurs when there is movement along a fault
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earthquake
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Type of fault where forces pull apart in opposite directions
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normal
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Type of fault where forces are pushed together
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reverse
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Type of fault where the layers have horizontally slid apart from each other
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strike-slip
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