Science Review 70
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Created by:
riepointer on January 22, 2010
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10 terms
Terms | Definitions |
|---|---|
| mineral | a naturally occuring substance, neither plant nor animal |
| igneous rock | fire-made, rock formed from melted rock material |
| sedimentary rock | rock formed from bits or layers of rock cemented together |
| relative age | the age of something compared with the age of another thing |
| metamorphic rock | rock whose form has been changed by heat and/or pressure |
| rock cycle | a process by which rocks are changed from one type to another |
| imprint | a fossil created by a print or impression |
| mold | a hollow fossil formed clearly showing the outside features of an organism |
| cast | a fossil formed or shaped within a mold |
| amber | hardened tree sap, often a source of insect fossil |
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