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This Concept Map, created with IHMC CmapTools, has information related to: Mars, over a period of time causes mirror images of magnetic stripes, Mars had plate tectonics, bring motion in Plate Tectonics, mirror images of magnetic stripes on either side of ridge axis, Mars is a dead planet, magnetic stripes on Mars, a dead planet because no radioactivity in core, no radioactivity in core means no internal energy, magnetic stripes caused by seafloor spreading, seafloor spreading by Divergent plate boundaries, Mars no current plate tectonics, iron 'freezes' in direction of magnetic field switches over a period of time, no internal energy because energy, magnetic stripes are iron 'freezes' in direction of magnetic field, Plate Tectonics forming cause magnetic stripes, energy is needed to bring motion