| A | B |
|---|
| Rocks | A hard substance composed of one or more minerals. |
| Clastic Rocks | Sedimentary rocks made of fragments of already existing rocks. |
| Organic Rocks | They come from organizms. They are formed either directly or indirectly from once living material. |
| Chemical Rocks | Rocks formed when a lake or ocean dries up leavind chemicals that form these rocks. |
| Sedimentary Rocks | Rocks formed by sediments carried by wind or water that are compacted together and/or cemented together. |
| Metamorphic rocks | Rocks formed when chemical reactions, tremendous heat, and/or great pressure change previously existing rocks into new rocks. |
| Intrusive Rocks | Rocks formed when magma forces it's way up into preexisting rocks and then hardens. |
| Igneous Rocks | Rocks formed when hot fluid rock cools and hardens. |
| Extrusive Rocks | Rocks formed from lava. |
| Sediments | The particles of mud sand or pebbles that form sedimentary rocks. |
| Rock Cycle | The continuous changing of one rock to another. |
| Metamorphism | The changing of one rock type to another due to pressure heat or reactions. |
