The diagram shows the result when a student placed a magnet under a piece of paper, then sprinkled iron shavings on the paper. The magnetic material is distributed this way because magnets a have magnetic fields that repel magnetic materials and push the shavings away. b have multiple magnetic fields that attract the shavings with different strengths. c have uneven magnetic fields that attract the shavings in random patterns. d have magnetic fields that flow from one pole of the magnet to the other.
