
Igneous Rock • Formed when magma cools • Inside the Earth • Can be heated under pressure • Becomes metamorphic rock • Can be melted again to form new magma • Above the ground • Can be weathered and eroded • Becomes sedimentary rock
Sedimentary Rock • Formed when sediments compact & cement into layers • Inside the Earth • Can be heated under pressure to form metamorphic rock • Above the ground • Can be weathered again to form more new sediment
Metamorphic Rock • Formed when rock changes under heat & pressure • Inside the Earth • May melt to form magma • Above the ground • May weather & erode to form sediment