Magnets

Magnets

1) Magnets can be made of iron, steel, cobalt or nickel. 2) A magnet can exert a push or a pull. 3) The parts of a magnet with the strongest attraction are called the poles of a magnet. 4) The two poles are called the N-pole and the S-pole. 5) Magnets can attract magnetic materials. 6) Like poles repel. Unlike poles attract. 7) All magnets are different in shapes and sizes. 8) A freely-turning magnet always come to rest in the North-South direction. 9) Magnetic force can pass through non-magnetic materials. 10) Magnetic force cannot pass through magnetic materials. 11) Different magnets have different magnetic strengths. 12) Magnets can either be temporary,permanent or electromagnets. 13) Temporary magnets lose their magnetism easily and are commonly made of iron or mild steel. 14) Electromagnets are formed by coiling a wire around an object such as iron nail and running an electrical current through the wire.The iron nail will be magnetised and become an electromagnet. 15) Lodestones were the first magnets. 16) There are two kinds of magnets which are natural or man-made. 17) Magnets are used in compasses to find directions. 18) Magnets are used in some electrical appliances. 19) A magnet can be made stronger by using the electrical method by winding the write around it more times. 20) A magnetic material can be magnetised by the 'stroke'method or electrical method. 21) Magnets can be made of iron,steel and different alloys. 22) Magnets can be in different shapes in sizes. 23) Magnets lose their magenetism when dropped a few times or when force is applied. 24) Some magnets are stronger than others. 25)If you put a magnet near a computer ,it may be damaged easily. 26)You should never put magnets near things that use magnets to work. 27) There are many kinds of magnets. media type="custom" key="8579508" 28) If an iron rod is made into an electromagnet, we can strengthen the iron rods magnetism by coiling more times around it. 29) The Earth is a huge magnet. The magnetic North and South poles can be found near the true North and South poles. // 30)Magnets can be used for years, provided one takes care of them. // // 31) // The shape of a horseshoe magnet brings the two magnetic poles close to each other to create a strong magnetic field. 32) A magnet cannot have 3 poles or more. 33)When a permenant magnet is split into two, they will form two magnets. 34)Always use magnet keepers and put magnets such that unlike poles are facing each other to store magnets. 35)Iron fillings can be used to show magnetic fields created by magnets 36) An iron nail can be magnetised sy the 'stroke' method and by the electrical method. 37)Most metal are magnetic 38)Magnets are mostly make up of iron. 39) When a magnet is strongly heated up, it will lose its magnetism. Additionally, some magnets are brittle and can fracture at high temperatures. 40)The strength of magnets does not depend on their size. 41) You can magnetize a magnetic material, causing it to become a temporary magnet.