| A | B |
|---|
| A rock material made of sand and gravel and a binder | concrete |
| A mineral used to make glass and that can generate electricity | quartz |
| Minerals from which metals can be removed | ores |
| The most widespread source of iron | hematite |
| The process of removing metal from ore | smelting |
| How ores are removed from the ground | mining |
| Something that grows but is not alive | crystal |
| Used to make steel | iron |
