| A | B |
|---|
| mineral | naturally formed, nonliving solid with a crystalline structure |
| streak | color of powder when a mineral is rubbed |
| luster | how a mineral reflects light |
| hardness | abilty to resist being scratched |
| cleavage | breaking along a smooth, flat edge |
| fracture | breaking along a jagged edge |
| igneous rock | made when magma cools and hardens |
| sedimentary rock | made when tiny pieces of rock are layered |
| metamorphic rock | made inside earth from heat and pressure |
| Moh's Scale | used to find the hardness of a mineral |
| deposition | when sediment settles in a new place |
| sediment | tiny pieces of rock |
| weathering | breaking down of rock into sediment |
| humus | small pieces of decayed plant and animal matter |
| erosion | movement of sediment |
