| A | B |
|---|
| rock | hard substance made up of minerals |
| igneous | formed by molten rock |
| sedimentary | formed by compacting of sediments |
| sediment | particles of rock &organic mat'l |
| metamorphic | changed by reaction, heat, pressure |
| rock cycle | rock-changing process |
| extrusive | igneous rock formed by lava |
| intrusive rock | formed by magma |
| clastic rock | sedimentary rock formed from other rock |
| organic rock | rock formed from once living material |
| chemical rock | non-clastic sedimentary rock |
| metamorphism | process that forms metamorphic rock |
