magnets

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magnets

  1. 1. Chapter 20 Introduction to Magnets
  2. 2. In Magnesia in Ancient Greece, there lived a shepherd named Magnus. One day, he was looking after his sheep in the hills.
  3. 3. All of a sudden, he felt a mysterious force pulling his iron staff from his hand. Even the iron nails on his sandals were being pulled out.
  4. 4. To his great surprise, he discovered that it was a huge, black rock next to him that was pulling his staff and the nails.
  5. 5. Soon, news spread across the country about the strange rock that had the power to pull things to it.
  6. 6. The Greeks later found other similar black rocks which had this power. These rocks were named ‘magnets’, after either Magnesia or Magnus himself.
  7. 7. Magnets are made into many shapes and sizes. U shape horseshoe ring button straight bar Today, scientists know that magnets interact with some metals.
  8. 8. At a glance… <ul><li>Magnets interact with some metals. </li></ul><ul><li>Magnets are made into different shapes and sizes. </li></ul>

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