MAGNETIC INSULATORS
Background
Let's see if there are magnetic insulators that are analogous to electrical insulators.Materials Needed
1 round magnet1 compass
notebook paper
brown paper
foil
cotton cloth
felt
plastic bag
Procedure
1. Earlier we tound that there are materials that act as electrical insulators that interrupt the flow of electricity. What did we use to determine whether the electrical current was interrupted?2. Based on your first exploration of magnets, what are two ways we can determine if a magnetic force is present?
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3. Which of these methods do you think will be more likely to detect a weak magnetic force and why?
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4. For each of the materials, put one layer of the material between the magnet and the detector. Test tor the presence of a magnetic force in two ways. Record your observations in the following chart.
5. Repeat step 4 but put 4 layers of each material between the magnet and detector. Record your observations in the chart.
6. Repeat step 4 but put 16 layers of each material between the magnet and detector. Record your observations in the chart.
Conclusion
What can you conclude about magnetic insulators?______________________________________________________________________
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Posted by Jay Roberts at 04:23 AM | Permalink
