1. Explain discovery of magnets.
2.write four differences between a natural & artificial magnet .
3. Define artificial magnet. Explain its different types with suitable diagram.
4. What are magnetic and non magnetic substances. Explain it with suitable examples.
5. Write two characteristics of a magnet. Explain these two characteristics with suitable example and diagram.
6. Write four properties of a magnet.
7. What do you mean by magnetic field of a magnet. How will you prove that a magnetic field exist around a magnet?
8. How will you prove that Earth behaves like a huge magnet? Draw a diagram to show the earth magnetic field in a limited space.
9. Explain four methods of making a magnet with the help of suitable examples and diagram.
10. Distinguish between temporary and permanent magnets. write at least five differences.
11. What is an electromagnet ? How it can be prepared? Draw its diagram. Write two factors affecting strength of an electromagnet.
12. Write five uses of magnets.
13. Why a magnet should be cared and stored in a proper way? Draw a diagram to show storage of :
A. Bar magnet
B. Horse shoe magnet
14. What do you mean by demagnetisation of a magnet. Write five ways in which A magnet can be demagnetised.
15. How will you find polarity of an Electromagnet when current passes through it?
16. Why artificial magnets are preferred over natural magnet? At least 3 points.
17. Differentiate between single touch and double touch method of making a magnet.
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