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Definition
| a naturally occurring substance that is neither plant nor animal |
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Definition
| the age of something compared with another thing |
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Definition
| formed or shaped within a mold |
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Definition
| rock that has been changed by heat, pressure, or both |
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Definition
| hardened tree sap, often a source of insect fossils |
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Term
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Definition
| process by which rocks are changed from one type into another type of rock |
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Definition
| rock formed when bits or layers of rocks are cemented together |
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Definition
| fossil created by a print or impression |
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Definition
| hollow fossil form clearly showing the outside features of an organism |
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Definition
| fire made rock formed of hot, molten rock material |
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Term
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Definition
| scientists who study the physical properties of rock |
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