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Mr. Moorman Who Am I? Rose-Hulman Institute University of Indiana Illinois General Motors Lucent Technologies of Technology Electrical Engineering Basketball Delco Electronics Sunman Elementary Bell Labs Dr. Jay Engineering Computer 4th Grade – Mrs. Hayden What do we use it for? WHAT IS ELECTRICITY ??? What kind of CITY is it? What happens when it goes away? How does it work? How does it get to us? Without Electricity… We might use Heat - Fires Communications – Semaphores Music - Piano Learn – Chalk Board Our lives would be very different! The Electron Its Upwardly Mobile and Attractive Anatomy of an Atom Electricity Static vs. Current (Dynamic) Static Current Is Stationary Flows In Circuit Brush Your Hair Wool Socks In Drier Balloon Two Main Forms Turn on Light Listen to Ipod Watch TV Today We Will Study Current Electricity… - Electrons in Motion Electrons are very very tiny particles Electrons carry energy Electricity is the movement of electrons Electricity flows through wires (current) Current Flows Like Water H H H OH OH H H OH OH H H H O O H H H H OH OH O H HH HO O H H O Electrons flow through wires like water flows through pipes Switch Supply of electricity - - - - - - - - - - - - - - - - - - - Electrons - - - - - - - - - Light bulb Frightening Lightening The Greater the Potential Energy (Voltage) the more the Electrons want to get back to ground AA Battery (1.5V) Plug in the House (110V) Lightening (100,000,000V) Electric Safety Never Stick Anything in an Outlet Never Touch Metal Around Electric Without Asking Never Ever Use Water Around Anything Electric Finger metal Heavy contact points Light pressure – many very few contact points Wet Skin metal Water increases contact area between skin and metal How is Electricity Made? Batteries Generators Batteries Use Chemistry to Release Energy Store a Fixed Amount of Energy Big Batteries are Needed to Store Lots of Energy Portable Cars, Phones, Flashlights, Ipods, Laptops, GameBoys, Boats Generators Use Energy to Make Electricity A moving magnet is able to push the electrons along a wire. The energy to move the magnet is carried by the electricity. Magnet - - - - - - - - - - - - - - - - - Magnet has to move to make electricity - - - Electrons - - - - - - - - - Light bulb Power Factories, homes and schools need large amounts of energy! Generators in power stations supply electricity to these factories, homes, and schools. These generators are in power stations and are huge! A Power Station electric current How to Generate Electric? Turn the Turbine Coal Natural Gas Nuclear Hydroelectric Wind Solar Thermal Waves Source: Energy Information Administration (EIA), Electric Power Monthly, June 2011, Table 1.1, 2010. Electricity Transmission • The electric current is generated in the power plant • AC of 60 Hz is produced and distributed at high voltage Electronics Circuits are used in … Computers, ipods, cars, clocks … Keyboards … … everything electric Electronics Circuits are used in … Communications, phones, networks, TV’s … Satellites … … everything electric Electronics Circuits are used in … Integrated circuits (IC’s) … Chips … … everything electric Drawing Circuits A Battery A Motor A Lamp M References Institute of Physics (IOP) in London, England www.iop.org neoK12 www.neok12.com