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Rocks And Minerals
science definitions
| Term | Definition |
|---|---|
| ROCK | a solid material made up of minerals . |
| LAVA | melted rock above the earth's surface |
| MAGMA | melted rock beneath the earths surface |
| BASALT | example of igneous rock |
| SEDIMENTS | tiny pieces of rock |
| SLATE | example of metamorphic rock |
| LIMESTONE | example of sedimentary rock |
| IGNEOUS | a rock that forms when melted rock cools and hardens |
| SEDIMENTARY | rocks that form from sediments |
| METAMORPHIC | rocks that form under pressure and hear within the earth |
| COMPACTION | presses sediments together |
| CEMENTATION | causes sediments to stick together |
| CRYSTALS | the factor that provides the easiest way to identify igneous rocks |
| LUSTER | the property that identifies minerals by the way in which they reflect light |
| FRACTURE | the property that identifies minerals by the way in which they break |
| HARDNESS | the property that identifies minerals by how much they can resist being scratched |