| A | B |
|---|
| Rock cycle | explains how a rock changes from one type to another |
| Sedimentary rocks | formed by the collection of small materials |
| Igneous rocks | rocks formed from molten material |
| Mohls scale | measures hardness |
| Hardness | ability of a rock to resist scratches |
| Bioclastic rocks | fossil fragments of water or land organisms found in sedimentary rocks |
| Fossil | rock remains found in sedimentary rocks preserved by being buried underneath layers of sand and mud |
| Fragment | small parts that are disconnected or incomplete |
| Fracture | breaking into pieces with uneven surfaces |
| Cleavage | how a mineral splits along smooth flat surfaces |
