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Recording form for Gathering Research Information Use this chart to gather information for your research. Be sure to keep track of your sources! Source of information http://www.mcwdn.org/Phy sics/Magnetism.html Information Gathered (copy and paste) Magnetism is the force where objects are attracted or repelled to one another. Usually these objects are metals such as iron. Put it in your own words Magnetism is the force where objects are attracted or repelled to one another. o Usually metals (ie: Iron) Every magnet has two poles which is where Magnetic Poles, Forces, and Fields the magnetic strength is most powerful. o Called north or south or north seeking and Every magnet has two poles. This is where most of its magnetic south seeking strength is most powerful. These poles are called north and south Attraction repelling of two magnets towards or north-seeking and south seeking poles. The poles are called this one another depends on how close they are as when a magnet is hung or suspended the magnet lines up in a to each other. north - south direction. When the north pole of one magnet is o Further away, the less they are attracted or placed near the north pole of another magnet, the poles are repelled to one another. repelled. When the south poles of two magnets are placed near one Magnetism is a force that either attracts or another, they also are repelled from one another. When the north repels at a distance. and south poles of two magnets are placed near one another, they o Due to a magnetic field. are attracted to one another. Caused by moving electrically charged particals or is inherent in magnetic The attraction repelling of two magnets towards one another objects such as an object depends on how close they are to each other and how strong the Magnet is an object that has a strong magnetic force is within the magnet. The further apart of the magnetic field and will attract materials to it. magnets are the less they are attracted or repelled to one another. (iron being one of the said materials) When a magnet is broken into little pieces, a north pole will appear at one of the broken faces and a south pole. Each piece, regardless of how big or small, has its own north and south poles. The are around a magnet can also behave like a magnet. This is called a magnetic field. The larger the magnet and the closer the object to the magnet, the greater the force of the magnetic field. Magnetic Materials The term magnetism is derived from Magnesia, the name of a region in Asia Minor where lodestone, a naturally magnetic iron ore, was found in ancient times. Iron is not the only material that is easily magnetized when placed in a magnetic field; others include nickel and cobalt. Magnets can also be formed that are called electromagnets. A simple electromagnet is formed with a battery and copper wire coiled around a metal rod such as a nail. There is evidence that there is an electrical basis for magnetism. http://www.mcwdn.org/Phy sics/Magnetism.html Magnetism is the force where objects are attracted or repelled to one another. Usually these objects are metals such as iron. MAg, Is the force wher objecs are either attracted or repelled. o Mostly metals. Magnetic Poles, Forces, and Fields Magnet has 2 poles o Wher most strength is powerful Every magnet has two poles. This is where most of its magnetic o North and south or north seeking and strength is most powerful. These poles are called north and south south seeking or north-seeking and south seeking poles. The poles are called this Called this when the magnet is hung or as when a magnet is hung or suspended the magnet lines up in a suspended and lines up with the north - south direction. When the north pole of one magnet is north/south direction. placed near the north pole of another magnet, the poles are o South/south or north/north, repels. repelled. When the south poles of two magnets are placed near one o North/south = attraction another, they also are repelled from one another. When the north Attraction depends on how close they are and south poles of two magnets are placed near one another, they together and how strong the magnetif force are attracted to one another. is. Distance makes a diff. The attraction repelling of two magnets towards one another Big and small pieces of magnets have depends on how close they are to each other and how strong the north/south magnetic force is within the magnet. The further apart of the Magnetic field magnets are the less they are attracted or repelled to one another. o Larger the magnet and the closer the object to the magnet, the greater force When a magnet is broken into little pieces, a north pole will appear at one of the broken faces and a south pole. Each piece, regardless of how big or small, has its own north and south poles. The are around a magnet can also behave like a magnet. This is called a magnetic field. The larger the magnet and the closer the object to the magnet, the greater the force of the magnetic field. Force of attraction or repulsion at a distance Magnetic field o moving electricity charged particals o inherent in magnetic objects Magnet = an object with strong magnetic field and will attract diff metals to it. Magnetic Field o Consiss of imaginary lines of Flux coming forom or moving or spinning A magnet is an object that exhibits a strong magnetic field and will electricity charged particles attract materials like iron to it. Magnets have two poles, called the Magnets north (N) and south (S) poles. Two magnets will be attacted by o Individual particals such as electrons can their opposite poles, and each will repel the like pole of the other have magnetic fields magnet. Magnetism has many uses in modern life. o Larger objects such as a piece of iron also can have a magnetic field Magnetic field o If it has a big magnetif field it is a magnet Attraction A magnetic field consists of imaginary lines of flux coming from o When two magnets or magnetic objects moving or spinning electrically charged particles. Examples are close to each other, there is a force include the spin of a proton and the motion of electrons through a that attracts the poles together. wire in an electric circuit. Repulsion o When two magnetic objects have like What a magnetic field actually consists of is somewhat of a poles facing each other, the magnetic mystery, but we do know it is a special property of space. force pushes them apart.magnets can also weakly repel diamagnetic materials Magnets http://www.school-forchampions.com/science/mag Basics of Magnetism netism.htm Magnetism is a force of attraction or replusion that acts at a distance. It is due to a magnetic field, which is caused by moving electrically charged particles or is inherent in magnetic objects such as a magnet. Although individual particles such as electrons can have magnetic fields, larger objects such as a piece of iron can also have a magnetic field, as a sum of the fields of its particles. If a larger object exhibits a sufficiently great magnetic field, it is called a magnet.. Attraction When two magnets or magnetic objects are close to each other, there is a force that attracts the poles together. Magnets also strongly attract ferromagnetic materials such as iron, nickel and cobalt. Repulsion When two magnetic objects have like poles facing each other, the magnetic force pushes them apart.magnets can also weakly repel diamagnetic materials. http://www.mceproducts.co m/knowledgebase/article/articledtl.asp?id=23 Curie Temperature Tc The Curie Temperature (Tc) is the temperature at which the magnet will be completely demagnetized. Even though it may still be a magnetic material, a material that has the ability to retain a magnetic field when magnetized, it would have completely demagnetized. It is important to note that taking a magnet to Tc will demagnetize the magnet, but depending on the process used, heating and cooling rates, and the environment that the magnet is exposed to during the temperature cycle, heating a magnet to Tc can cause structural or mechanical damage. Curie Temperature o Temp at which magnet will be completely demagnetized. o Still will be a magnetic material that has ability to retain a magnetic field. But will have demagnetized.