ROCKS TELL US NOTHING ABOUT THE PHYSICAL WORLD; DO ROCKS HAVE DIFFERENT PROPERTIES AND CHANGE OVER LONG PERIODS OF TIME? IGNEOUS ROCKS COME FROM LAVA OR MAGMA, I GUESS? -GEOLOGY STUDENT; CLASSIFYING METAMORPHIC, IGNEOUS, AND SEDIMENTARY ROCKS BASED ON MINERAL COMPOSITION, TEXTURE, AND FORMATION PROCESSES IS CRUCIAL FOR UNDERSTANDING THEIR ORIGIN AND HISTORY! -PROFESSOR NEWTON STUDENT