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प्रश्न
Suggest an activity to prepare a magnetic compass by using an iron needle and a bar magnet.
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उत्तर
Using the approach below, you can make a magnetic compass.
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On a wooden table, place one needle.
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Move a magnet along the length of the needle without raising it.
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When you reach the needle’s endpoint, raise the magnet and rub it in the same way again.
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Keep going in the same direction as before and repeat the steps.
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Now, in a water-filled container, set the needle on the cork.
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The needle will change and position itself in the “North-South” way.
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संबंधित प्रश्न
What are magnetic and non-magnetic substances? Give two examples of each.
Distinguish between
Magnetic and non-magnetic materials.
Few iron nails and screws got mixed with the wooden shavings while a carpenter was working with them.How can you help him in getting the nails and screws back from the scrap without wasting his time in searching with his hands?
Rubber is a magnetic material.
Write down the names of substances.
Substances that are attracted by magnets are called non-magnetic substances.
Analogy:
Magnetic substance: Attracted by magnets
Non-magnetic substance: ______.
What are magnetic substances?
When the iron needle is rubbed with a bar magnet the needle gets magnetized. But the rubber piece is rubbed with a magnet it will not get magnetized. Why?
A toy car has a bar magnet laid hidden inside its body along its length. Using another magnet how will you find out which pole of the magnet is facing the front of the car?
