| A | B |
|---|
| igneous rock | Rock formed from molten rock |
| metamorphic rock | Rock that is formed by chemical reactions and/or heat |
| minerals | An natrually occuring inorganic solid that has a definite chemical composition and a definite crystal shape |
| sedimentary rock | Rock formed by the compacting and compressing sediments or other non-igneous procces at the earths surface |
| rock cycle | The process in which rocks constantly change from one kind to the other |
| gemstones | A hard, durable, and beautiful substance that can be cut or polished for jewlery |
| semiprecious stones | stones that are not as rare as gemstones |
| metals | The complete opposite of nonmetal |
| nonmetals | An element that has a dull surface, poor cunductor of electricity and heat and is not easily shaped |
| ores | A mineral or rock from which metals and nonmetals are formed |
| extrusive rock | Igneous rock formed from lava |
| intrusive rock | An Igneous rock formed by magma |
| metamorphism | The process in which metomorphic rock is formed |
| rock | A hard substance made of one opr more minerals or minerallike substances |
| organic rock | A sedimentary rock formed either directly or indirectly from material that was once alive |
| clastic rock | A sedimentary rock formed from previously existing rock |
| chemical rock | A non-clastic sedimentary rock formed by an inorganic process such as evaporation |
