the theory that the outer part of the earth is made up of Plate Tectonics rigid plates that Theory move relative to each other the process by which oceanic plates diverge (move apart) allowing Seafloor Spreading magma to fill the void and create a new seafloor
Plate Tectonics Theory the theory that the outer part of the earth is made up of rigid plates that move relative to each other Seafloor Spreading the process by which oceanic plates diverge (move apart) allowing magma to fill the void and create a new seafloor