Imp Questions For All Chapters – General Science Class 6
Fun with Magnets
Short Questions
1. What is a magnet?
Answer : A material that attracts iron, nickel, and cobalt.
2. What is magnetism?
Answer : The force by which a magnet attracts objects.
3. Who discovered the first natural magnet?
Answer : A shepherd named Magnes.
4. What is a natural magnet called?
Answer : Magnetite or lodestone.
5. Name three magnetic materials.
Answer : Iron, cobalt, and nickel.
6. What happens when like poles of a magnet are brought close?
Answer : They repel each other.
7. What happens when opposite poles of a magnet are brought close?
Answer : They attract each other.
8. What is the shape of a bar magnet?
Answer : Rectangular.
9. Which direction does a freely suspended magnet always point?
Answer : North-South.
10. What is an electromagnet?
Answer : A temporary magnet made using electricity.
11. Which scientist discovered electromagnetism?
Answer : Michael Faraday.
12. Where is a magnetic strip used?
Answer : In ATM and credit cards.
13. What is induced magnetism?
Answer : When an object becomes magnetic near a magnet.
14. How does a Maglev train work?
Answer : It uses magnetic force to move.
15. How can a magnet lose its magnetism?
Answer : By heating, dropping, or breaking it.
Long Questions
1. What are the different shapes of magnets?
Answer : Magnets come in different shapes like bar magnet, horseshoe magnet, disc magnet, ring magnet, and cylindrical magnet. Each shape is used for different purposes.
2. How does a compass work?
Answer : A compass has a small magnetic needle that always points north-south. It helps travelers and sailors find directions.
3. What happens if we break a magnet into two pieces?
Answer : If a magnet is broken, each piece becomes a new magnet with a north and south pole. The poles can never be separated.
4. How are magnets useful in daily life?
Answer : Magnets are used in electric bells, speakers, compasses, MRI machines, and cranes to lift heavy iron objects. They are also used in computers and refrigerators.
5. What is an electromagnet and where is it used?
Answer : An electromagnet is a temporary magnet made by passing electricity through a coil around an iron core. It is used in doorbells, electric motors, and cranes for lifting heavy objects.
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