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10 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Fossil |
The remains of an organism preserved in a rock. |
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Mold fossil |
When an organism dies and is covered by sediment |
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Cast fossil |
When an organism dies and minerals gradually enter into the cavity. |
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Petrified/permineralized fossil |
When remains have been replaced by Minerals |
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Preserved fossil |
The preserved remains of an organism. |
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Carbonized fossil |
Formation of carbon from organic matter. |
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Trace fossil |
A fossil of a footprint or trail, not the actual animal. |
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Law of superstition |
The youngest layer of rock is on top and the oldest is on the bottom. |
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Relative age |
Comparing the age of one object to another. ( not the exact age.) |
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absolute age |
The specific time. The exact age. |
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