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Force Between Magnets Lab Name___Date___Equipment: Bar Magnets (2 Per Group) Force Betw. Magnets Lab and Ext..doc Force between Magnets Lab Name______________________________ Date____________________ Equipment: bar magnets (2 per group) Compass Iron filings Colored Pencil or Crayons Procedure: Part 1 Examine the bar magnets that the teachers are holding. Draw a picture of them: Hypothesis: Write a statement about what you predict will happen when they are placed near to each other. In addition to the statement, you may also draw a picture. ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ When everyone in your group has completed writing a hypothesis, getter 1 should get a pair of magnets for your group. See what happens when you move them towards each other. Write your observation. You may also draw pictures of your observations. ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ The word attract means to pull to or draw toward. The word repel means to force away or apart. Use the words attract and repel to describe your observations. ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ 1 of 1 Force Betw. Magnets Lab and Ext..doc Part 2. Getter 2 should return the magnets to the supply area. Getter 1 should get a compass. Draw a picture of the compass. Line it up so the arrow is pointing to the "N". How do you think this works? ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ Getter 1 should get one magnet. Put it flat on the table near the compass. Move the "N" pole of the magnet towards the "S" on the compass. What happens? ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ Now put the "N" pole of the magnet towards the "N" side of the compass. What happens? ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ Why do you think this happens? What do you think it tells you about the compass? ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ 2 of 2 Force Betw. Magnets Lab and Ext..doc Part 3 Magnetic fields show you how a magnet would change another magnet around it. Getter 1 should get sealed iron filings. Place your sealed iron filings near your bar magnet. Notice how the iron filings create a new shape. This is because each little piece of iron has become magnetized and has become its own mini magnet. These mini magnets (iron filing) create lines go from the North end of the magnet to the South end. These lines are called magnetic field lines. Now use your compass to show how the bar magnet changes it. In the circles, draw an arrow to show the direction that a compass points. Label the tip of the arrows as N for North and the other end as S for South. N S 3 of 3 .
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