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Fun with Magnets — Science STD 6 — Question

CBSE BoardEnglish MediumSTD 6ScienceFun with Magnets5 Marks
Question
Suggest an activity to prepare a magnetic compass by using an iron needle and a bar magnet.
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Answer

Steps involved in preparing a magnetic compass are:
  1. Take an iron needle which is to be magnetised.
  2. Magnetise it using a bar magnet.
  3. Insert the magnetised needle through a small piece of cork.
  4. Let the cork float in a water in a bowl. Make sure that the needle does not touch the water.
  5. Your magnetic compass is now ready to work. Note the direction in which the needle points when the cork is floating.
  6. Rotate the cork, with the needle fixed in it, in different directions. Note the direction in which the needle points when the cork begins to float again without rotating. You will observe that the needle indicates the North-South direction when it comes to rest.

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