Briefly explain how magnetic patterns on the seafloor support Plate Tectonic theory
What will be an ideal response?
the magnetic patterns of highs and lows are symmetrical about mid ocean ridges where Plate Tectonic theory identifies the formation of new ocean crust. As the magma cools, it records the orientation of the magnetic field that exists at the time of cooling and because the magnetic field changes polarity regularly, the pattern reflects those changes in polarity. The symmetry about the ridge indicates the magma was emplaced in that location and then was split apart and moved in opposite directions (diverging) away from the ridge.
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