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By Mrs. I. Soto P.S.19K Focus Questions • What is Electricity? • What is Magnetism? • How Are Electricity and Magnetism Related? • What Are Some Sources of Electricity? • How Do People Use Energy Resources? Hi, I am Maggie the magnet. I am going to tell you some facts about electricity and magnets. Electricity Electricity is a form of energy produced by the movement of electrons. Electricity is electrical power or an electric current. Static Electricity Static Electricity occurs when there is a change of matter in an object. Almost all the time matter is electrically neutral. That means that it has the same amount of positive charges and negative charges. When these electrical charges builds up on an object the results are static electricity. Current Electricity Current electricity occurs when an electric current moves through a material such as a metal wire. This form of energy can be sent through wires in a flow of tiny particles. Complete Circuit In order for the light bulb to light up you need a circuit, a power source (battery), and a conductor. Energy moves from the source, through the wires , to the light bulb. Power plants produce the flow of charges , which is then sent to people’s homes, businesses, schools, etc. along wires to provide electricity to light bulbs, give heat, and run motors. Circuits Open Circuit Closed Circuit Uses of Electricity Electricity is an energy that is everywhere. Electric energy can be changed into light energy with the use of a light bulb, heat energy from a heater, or toaster. Electricity powers many of our everyday devices like televisions, computers, games, flashlights, refrigerators, among others. Magnets Magnets are objects that have a magnetic field around them. Magnets have two poles, just like our Earth does. We have a North Pole and a South Pole. The side that points to the north is called the north pole, and the side that point to the south is called the south pole. • We are Magnetized, magnetism is a force created by electricity. When a thing has more electrons than it has protons, it has a negative charge. If it has more protons than electrons, it has a positive charge. All magnets have a magnetic force field. Our opposite poles attract, while our like poles repel (push away) each other. That means that the north pole of one magnet will attract the south pole of another magnet. Did you know that our Sun is highly magnetic? That’s because there are some places on the sun that has high levels of electrons or protons. Our planet Earth is a gigantic magnet with a force field surrounding it. Magnets can be found in many items that we use. For example, magnets are found in headphones, CD players, computers, DVD players, refrigerators, some furniture have magnetic locks, there are screwdrivers that have a magnetic tip, even doorbells work with magnets. The effect of a magnet on a compass needle. ELECTRICITY Bibliography http://members.shaw.ca/len92/electrons_moving_wire.gif http://ethemes.missouri.edu/themes/1612 www.explainthatstuff.com www.googleimages.com My World of Science MAGNETS, Royston, Angela 2001