Metamorphic formed from high temperature & pressure, changes properties of rock buried in the Earth's crust formed from pre-existing rocks Ex: marble, slate
Sedimentary Rock made from sediment formed by the pressing down of sediment from rock named for the sediment that makes them Ex: sandstone
Igneous Formed by cooling lava Intrusive-cooled slowly inside the Earth's surface Extrusive-cooled slowly outside the Earth's surface Ex: obsidian,basalt
