Sedimentary rocks form from particles cemented together, metamorphic rocks result from heat and pressure altering rocks, and the rock cycle describes the transformation of rocks over geological time.
Sedimentary rocks are often composed of fragments from older rocks that have been cemented together, such as in the formation of sandstone from sand particles. Metamorphic rocks, on the other hand, are formed when existing rocks are subjected to intense heat and pressure, causing profound physical and chemical transformations. The rock cycle illustrates how rocks change from one form to another over geological time through various geological processes, including melting, cooling, weathering, and pressure-induced metamorphosis.
In conclusion, the rock cycle is a crucial concept in geology that connects sedimentary, metamorphic, and igneous rocks in a dynamic process of continuous change and rebirth.