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Rocks and Minerals
6th grade science
| Term | Definition |
|---|---|
| Mineral | A solid, naturally formed substance that always has the same composition and the same properties. |
| Rock | A naturally formed combination of minerals and other natural materials. |
| Compound | A molecule that is made of one or more atoms of different elements. |
| Igneous | Rock formed from magma or lava. |
| Sedimentary | Rock formed from compacted sediment. |
| Metamorphic | Rock formed from existing rock; heat and pressure cause the minerals to form new combinations or new crystals. |
| Magma | Molten rock within Earth. |
| Strata | Layers of sedimentary rock. |
| Rock Cycle | The continuous process of change in which new rocks are formed from old rock materials. |