| A | B |
|---|
| Metamorphic Rock | Rocks formed when chemical reactions, tremendous heat and/or great pressure change existing rock into new rock. |
| Sedimentary Rock | Rocks formed by particles that have been caried and deposited by wind or water. |
| Igneous Rock | Originally hot, fluid magma within the earth. |
| Rock | A hard substance composed of either one or more minerals or minerallike substances. |
| Rock Cycle | The continous changing of one rock to another ovver a long period of time. |
| Extrusive Rocks | Rocks formed from lava. |
| Intrusive Rocks | Rocks formed when magma forces it's way up into preexisting rocks and then hardens. |
| Organic Rocks | Formed by organizms, organic rocks form directly or indirectly from material that was once alive. |
| Chemical Rocks | Formed when a lake or ocean evaporates leaving minerals behind. |
| Clastic Rocks | Sedimentary rocks made of fragments of previously existing rocks. |
| Metamorphism | The changing of one type of rock to another. |
| Sediment | The particles that form Sedimentary Rocks. |
