PDF chapter test TRY NOW
Make a magnetic compass:
- Magnetise an iron needle using a bar magnet.
- Now, insert the magnetised needle through a small piece of cork or foam.
- Let the cork float in water in a bowl or a tub.
- Make sure that the needle does not touch the water.
- Your compass is now ready to work.
- Make a note of the direction in which the needle points when the cork is floating.
- 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.
Home-made compass
Does the needle always point in the same direction, when the cork stops rotating?
in the same direction, when the cork stops rotating.
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