Types Of Rocks🤷🏾‍♀️

Formed formed by pressure or heat can be formed by pressure from layers above or by contact with hotter material examples include marble slate gneiss start out as one kind of rock and then change into another kind sometimes contain more than one rock type baked together

Made from sediments that settle on the bottom of an ocean or river formed by the pressure of many layers building up on top of one another examples include sandstone lime stone and Coal are formed when mud salt or other things make a natural cement that sticks layers together contain pieces of sand soil other rocks shells and sometimes fossil

Formed by the heating and cooling of magma examples include obsidian granite and Pumice are often shiny or seem to be full of holes can be intrusive (cooled inside the earth) or extrusive (cooled outside the earth)