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1.
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It's age compared to the ages of other rocks
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Relative Age
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2.
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Is the # of years since the rock formed
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Absolute Age
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3.
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According to this law in horizontal sedimentary rock layers the oldest layer is @ the bottom. Each higher layer is younger than the layers below
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Law Of Superposition
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4.
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Lava that hardens on the surface
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Extrusion
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5.
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There the magma cools & hardens into a mass of igneous rock
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Intrusion
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6.
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A break in Earth's crust
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Fault
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7.
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A gap in the geologic record
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Unconformity
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8.
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A fossil must be widely distributed & represent a type of organism that existed only briefly
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Index Fossil
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9.
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A well tested concept that explains a wide range of observations
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Scientific Theory
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10.
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Are preserved remains or traces of living things
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Fossils
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11.
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No longer exists & will never live on Earth
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Extinct
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12.
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The gradual change in living things over long periods of time
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Evolution
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13.
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Scientists who study fossils
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Paleontologists
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14.
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Type of rock that is made of hardened sediment
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Sedimentary Rock
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