The rock cycle today that I'm going to explain is how metamorphic rock becomes magma and then forms as igneous rock then becomes sedimentary rock.
Metamorphic rocks are formed under the earth when intense heat and pressure occur. The rocks that result from these processes often have ribbon-like layers and may have shiny crystals, formed by minerals growing slowly over time, on their surface. Obsidian is an example of a metamorphic rock, it's glassy in appearance.
Ingneous rocks are formed when magma cools and hardens. Sometimes the magma cools inside the earth, and other times it erupts onto the surface from volcanoes. When lava cools very quickly, no crystals form and the rock looks glass-like. Sometimes you may even see bubbles trapped in the rock. Igneous rock is found around volcanoes. Lava rock is an example of Igneous rock.
Sedimentary rock is formed from particles of sand, shells and other fragments. Together the particles make up sediment. Sedimentary rock is found in layers of land and on many surfaces i.e. near seas or rivers. Limestone is one example of sedimentary rock. We have lots of limestone in Kansas.
In conclusion, these many types of rock are connected by the cycle in which they are formed. From underground heated and pressurized, metamorphic rock, to shooting out of a volcano, igneous rock, to collecting other sediment near rivers or oceans and forming sedimentary rock.