This link has been bookmarked by 27 people . It was first bookmarked on 26 Oct 2007, by Mr M.
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29 Dec 09
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14 Aug 09
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10 Aug 09
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09 Aug 09
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06 Aug 09
Lara KesslerA cool site about how electricity works. It includes discussion of electricity and magnets, static electricity, and circuits.
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17 Jun 09
not suregood kids resource on electricity. Also includes several paragraphs on magnets and how they work and are related to electricity
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15 Apr 09
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It is a secondary energy source which means that we get it from the conversion of other sources of energy
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electricity itself is neither renewable or non-renewable
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Electricity is a controllable and convenient form of energy used in the applications of heat, light and power.
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Moving magnetic fields can pull and push electrons. Some metals, like copper have electrons that are loosely held. They can be pushed from their shells by moving magnets.
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A chemical reaction between the metals and the chemicals frees more electrons in one metal than in the other
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A load is a device that does work or performs a job. If a load––such as a lightbulb––is placed along the wire, the electricity can do work as it flows through the wire
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A generator is a device that converts mechanical energy into electrical energy.
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A typical generator at a power plant uses an electromagnet—a magnet produced by electricity—not a traditional magnet. The generator has a series of insulated coils of wire that form a stationary cylinder. This cylinder surrounds a rotary electromagnetic shaft. When the electromagnetic shaft rotates, it induces a small electric current in each section of the wire coil. Each section of the wire becomes a small, separate electric conductor. The small currents of individual sections are added together to form one large current. This current is the electric power that is transmitted from the power company to the consumer
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A turbine converts the kinetic energy of a moving fluid (liquid or gas) to mechanical energy.
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A kilowatthour (kWh) is equal to the energy of 1,000 watts working for one hour.
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The amount of electricity a power plant generates or a customer uses over a period of time is measured in kilowatthours (kWh). Kilowatthours are determined by multiplying the number of kW's required by the number of hours of use.
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19 Feb 09
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Electricity is the flow of electrical power or charge. It is a secondary energy source which means that we get it from the conversion of other sources of energy, like coal, natural gas, oil, nuclear power and other natural sources, which are called primary sources. The energy sources we use to make electricity can be renewable or non-renewable, but electricity itself is neither renewable or non-renewable
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12 Feb 09
Ashley HiserA fun site that explains electricity to kids and how it was invented.
electricity BenFranklin ThomasEdison power charge NikolaTesla current EnergySource protons neutrons nucleus electrons magnets PeriodicTable
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15 Dec 08
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23 Nov 08
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22 Nov 08
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Electricity is the flow of electrical power or charge. It is a secondary energy source which means that we get it from the conversion of other sources of energy, like coal, natural gas, oil, nuclear power and other natural sources, which are called primary sources. The energy sources we use to make electricity can be renewable or non-renewable, but electricity itself is neither renewable or non-renewable.
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Electricity is a basic part of nature and it is one of our most widely used forms of energy. Many cities and towns were built alongside waterfalls (a primary source of mechanical energy) that turned water wheels to perform work. Before electricity generation began over 100 years ago
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30 Sep 08
Sarah CarnicellaThis site has a teacher's guide, classroom activities, facts, history, puzzles/games/field trips, and links to other resources about energy and electricity
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25 Sep 08
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23 Sep 08
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11 Aug 08
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If you could see an atom, it would look a little like a tiny center of balls surrounded by giant invisible bubbles (or shells). The electrons would be on the surface of the bubbles, constantly spinning and moving to stay as far away from each other as possible. Electrons are held in their shells by an electrical force.
The protons and electrons of an atom are attracted to each other. They both carry an electrical charge. An electrical charge is a force within the particle. Protons have a positive charge (+) and electrons have a negative charge (-). The positive charge of the protons is equal to the negative charge of the electrons. Opposite charges attract each other. When an atom is in balance, it has an equal number of protons and electrons. The neutrons carry no charge and their number can
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Electricity has been moving in the world forever. Lightning is a form of electricity. It is electrons moving from one cloud to another or jumping from a cloud to the ground. Have you ever felt a shock when you touched an object after walking across a carpet? A stream of electrons jumped to you from that object. This is called static electricity.
Have you ever made your hair stand straight up by rubbing a balloon on it? If so, you rubbed some electrons off the balloon. The electrons moved into your hair from the balloon. They tried to get far away from each other by moving to the ends of your hair.
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08 Aug 08
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26 Oct 07
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