I can compare rocks and minerals and describe how they are related
Rocks are made of minerals (Figure below). The minerals may be so tiny that you can only see them with a microscope. The minerals may be really large. A rock may be made of only one type of mineral. More often rocks are made of a mixture of different minerals. Rocks are named for the combinations of minerals they are made of and the ways those minerals came together. Remember that different minerals form under different environmental conditions. So the minerals in a rock contain clues about the conditions in which the rock formed.
Rocks contain many clues about the conditions in which they formed. The minerals contained within the rocks also contain geological information.