| A | B |
|---|
| mineral | a solid material with particles arranged in a repeating pattern |
| streak | color of the powder left behind when you rub a mineral against a white tile called a streak plate |
| luster | describes the way the surface of a mineral reflects lighthardness |
| hardness | a mineral's ability to resist being scratched |
| rock | material made up of one or more minerals |
| igneous rock | rock that forms when melted rock hardens |
| weathering | the breaking down of rods into smaller pieces caused by wind, water, ice, and plant roots |
| erosion | the movement of weathered rock pieces from one place to another |
| sedimentary rock | rock formed by layers of sediment that are squeezed and stuck together |
| metamorphic rock | rocks that have been changed by high heat or very high pressure |
