Unit C
Chapter One
Minerals, Rocks, and Fossils| mineral |
solid natural object that has never been alive |
| rock |
solid material made of one or more minerals |
| crust |
Earth’s solid outer layer |
| mantle |
Earth’s middle layer |
| igneous rock |
rock that was once melted but has cooled and hardened |
| sedimentary rock |
materials that settle into layers and harden |
| meamorphic rock |
rock that has been changed by heat and pressure |
| rock cycle | a process of changing rock types |
| fossil |
marks or remains of a once-living thing |