- Because of the icy crust of the Earth, we are not always the same crust layer on the flat look of stone when the heat radiating out from the traditional world. To cause to become a stone-lined , called liquid (magma under the plate tectonics are called MAK came when Dan came into the atmosphere of the Earth is called lava), and when it gets hot, very naughty, you will access it from the world, they like the same flow water in the kettle that ran around the kettle with spout smoke ejected by the volcano drain it, and eventually, to protrude out of the plate tectonics as a crevice.