Magnetism and Plate Tectonics

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Across
  1. 5. The study of ancient magnetic fields.
Down
  1. 1. Large pieces of Earth’s crust and mantle.
  2. 2. Molten rock that comes out onto the surface of the earth.
  3. 3. A substance in lava whose molecules align with Earth’s magnetic field.
  4. 4. Molten rock found underneath the surface of the earth.