| A | B |
|---|
| mineral | A natural, nonliving, solid material that has particles in a repeating pattern |
| luster | A mineral property that describes the way light reflects from the mineral's surface |
| rock | A material made of one or more minerals |
| crystal | a repeating pattern in a mineral |
| sedimentary rock | Sediment that is sqeezed together |
| metamorphic rock | Rocks that change form |
| igneous rocks | Rocks that form when lava hardens |
| rock cycle | Never-ending rock changes |
| hardness | A mineral's ability to resist being scratched |
| conglomerate | A sedimentary rock with large stones in it |
| pumice | A metamorphic rock, that has many holes and floats on water |
| fine grained | Small mineral pieces |
| schist | a metamorphic rock that has wavy layers |
| Moh's scale | A system that shows the hardness of minerals |
| diamond | The hardest mineral |
| obsidian | a metamorphic rock that is shiny black and sharp like glass |
