Wide Web - Science Poetry Rocks and Minerals by Eric S Rocks and minerals can be tiny, enormous, strong or delicate. One kind of rock type is sedimentary.
Sedimentary rock is like a sandwich filled with many different layers.
It forms in layers and hardens from high temperature and pressure. Another type of rock is metamorphic. It changes into different rock from heat and pressure. Metamorphic rock is like melting an Oreo and then letting it harden. Marble is a metamorphic rock.