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Magnetism BY ERIK, BRIANNA, MICHAEL, WYATT The properties or effects of magnetic fields. There is magnetism in credit cards, phones, and the earth. On Earth one needs a sensitive needle to find magnetic forces, and out in space they are usually a lot weaker. But beyond the dense atmosphere, such forces have a much bigger role, and a region exists around the Earth where they dominate the environment, a region known as the Earth's magnetosphere. That region contains a mix of electrically charged particles, and electric and magnetic rather than gravity determine its structure. We call it the Earth's atmosphere. Magnetism is a force that acts at a distance due to a magnetic field. This field is caused by moving electrically charged particles or is inherent in magnetic objects such as a magnet. A magnet is an object that exhibits a strong magnetic field and will attract materials like iron to it. Magnets have two poles, called the north and south poles. Two magnets will be attracted by their opposite poles, and each will repel the like pole of the other magnet. Magnetism has many uses in modern life. wwwistp.gsfc.nasa.gov/Education/Imagnet.html http://www.school-forchampions.com/science/magnetism.htm http://www.mcwdn.org/Physics/Magnetism.ht ml.com