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7 May, 21:56

How the polarity of Earth's magnetic field is recorded in the sea-floor

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  1. 7 May, 22:08
    0
    the lava the extrudes from mid-ocean ridges

    Explanation:

    the lava will turn into rock that becomes magnetized and acquires the magnetic polarity that existed when the lava cooled. This process continues repeatedly and is a form of record of the Earth's changing magnetic polarity.
  2. 7 May, 22:29
    0
    The lava extrudes from the underground of earth
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