| A | B |
|---|
| Fossil | Something that has lasted from aliving that died long ago. |
| Mineral | An object that is solid, is formed in nature, and has never been alive. |
| Rock | A solid of minerals. |
| Crust | The solid outside layer of the Earth. |
| Mantle | The middle layer of the Earth. |
| Core | The center of the Earth. |
| Igeneous Rock | A rock that was once melted but has cooled and hardened. |
| Sedimentary Rock | A rock formed from material that has settled into layers and been squeezed until it hardens into rock. |
| Metamorphic Rock | A rock that has been changed by heat and pressure. |
| Rock Cycle | The process in which one type of rock changes into another type of rock. |
