| A | B |
|---|
| Igneous rock | cooling and hardening of molten material |
| magma | melted rock under earth's surface |
| lava | molten rock from a volcano |
| intrusive rocks | igneous rocks cooled slowl inside the earth |
| extrusive rocks | igenous rocks cooled quickly ourside the earth |
| fine-grained | igenous rock with small crystals |
| coarse-grained | igenous rock with large crystals |
| metamorphic rock | rock formed from heat and pressure |
| foliated rock | banded, minerals line up in parallel bands |
| nonfoliated | no banding |
| sedimentary rock | rocks formed from sediments |
| cementation | minerals cemented together by crystals |
| compaction | squeezing of layers |
| clastic rock | formed from pieces of other rocks |
| nonclastic rock | sediments from dissolved minerals |
| organic rock | formed from once-living organisms |
| granite | igneous rock |
| sandstone | sedimentary rock |
| marble | metamorphic rock |
| rock cycle | the change of one rock to another |
