Scientists can learn from magnetic striping patterns:
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The direction plates are moving relative to each other - Magnetic striping patterns on the ocean floor provide evidence of seafloor spreading and the movement of tectonic plates.
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The speed of one plate as it subducts below another plate - The rate at which magnetic striping patterns form can indicate the rate of plate movement, including subduction.
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The cause of magnetic pole reversals - While not a direct observation, the patterns can offer insights into the history and frequency of magnetic field reversals.
The other options (such as predicting the next earthquake or magnetic reversal year) are not directly informed by magnetic striping patterns.