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How carry out We convert Electrical energy Into mechanical Energy?
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GRADE LEVELGrades 9 with 12

ESTIMATED TIMEThis lesson plan will take approximately 50 minutes.

You are watching: What converts electrical energy to mechanical energy

CONCEPTAccording to the law of preservation of Energy, we cannot create or destroy energy, yet we can readjust its form. That method we have the right to transmit energy an excellent distances in that is electrical type and, once it arrives at the destination, change it right into its mechanical kind to do work.

BACKGROUNDThe most common machine for changing electrical power into mechanical energy is the motor. Many motors use electromagnets to reason mechanical rotation, which deserve to do work. Before Nikola Tesla designed the AC (alternating current) induction motor, no motors could adjust AC right into mechanical energy. The most fundamental element of the AC motor is the electromagnet, a magnet make from electric current. In the an initial Demonstration Experiment below, you have the right to make and demonstrate an electromagnet to present students the most basic technique of changing electrical power into mechanical energy.

LESSON OBJECTIVESStudents will:Discuss the idea that together mechanical power was converted into electrical energy at the power plant, electrical energy is now to it is in converted ago to mechanical power by a motor.Make some simple drawings of just how magnets job-related in the procedure of a motor. Talk about the use of the engine in industry and also how various other applications of the motor might work.

NATIONAL STANDARDSThis class addresses the following National Science education and learning Standards, uncovered at http://www.nap.edu/readingroom/books/nses/:Science as Inquiry: scientists usually inquire about how physical, living, or designed equipment function. Theoretical principles and also knowledge overview scientific inquiries. Historical and also current clinical knowledge influence the design and also interpretation of investigations and the testimonial of suggest explanations do by various other scientists.Physical Science, interaction of Energy and also Matter: Electricity and also magnetism are two elements of a solitary electromagnetic force. Moving electric charges develop magnetic forces, and also moving magnets produce electric forces. This effects aid students to understand electrical motors and also generators. Physical Science, conservation of Energy: The full energy the the universe is constant. Power can be moved by collisions in chemical and also nuclear reactions, by light waves and also other radiations, and in many other ways. However, it have the right to never it is in destroyed. Together these move occur, the matter affiliated becomes steadily less ordered.Physical Science, interactions of Energy and also Matter: All energy can be taken into consideration to be one of two people kinetic energy, which is the energy of motion; potential energy, which relies on family member position; or energy had by a field, such together electromagnetic waves. Physical Science, interaction of Energy and also Matter: In some materials, such as metals, electrons flow easily, vice versa, in insulating products such together glass they deserve to hardly flow at all. Semiconducting materials have intermediate behavior. At short temperatures part materials end up being superconductors and offer no resistance to the flow of electrons.Science and also Technology: scientific research and modern technology are pursued for various purposes. Scientific inquiry is moved by the desire to know the herbal world, and technical design is moved by the need to meet human needs and also solve human problems. Technology, by its nature, has a much more direct effect on culture than science since its purpose is to solve person problems, assist humans adapt, and fulfill human being aspirations. Technological solutions may create brand-new problems. Science, by its nature, answers concerns that might or might not directly influence humans. Sometimes scientific advances challenge people"s beliefs and practical explanations worrying various facets of the world.

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DEMONSTRATION EXPERIMENT: readjust ELECTRICAL power INTO mechanically ENERGYMaterialsEach student or each group of college student will need the adhering to materials to perform this experiment:1-inch steel nail100" spool small-gauge insulated copper magnet wire (#25)knife switch4-inch iron nail6-volt batterysmall steel staplespaper clips or tacksProcedureView the portrayed instructions because that a visual synopsis of this project.Wrap the 4-inch nail v a coil that 25 come 50 transforms of the wire. Attach one end of the coil to one terminal of the knife switch. Attach the other terminal the the knife switch to the battery. Attach the finish of the coil come the various other terminal of the battery. Host the reminder of the 1-inch nail close to the flat end of the 4-inch nail. Close the knife move quickly and also then open up it. (Do not leave the closed.) What happens? (The 1-inch nail will certainly be pulled towards the 4-inch nail. This is mechanical energy in action. The mechanical power is resulted in by the attractive force of the electromagnet. Currently imagine a one of electromagnets the you could turn on and off one after another. Utilizing this device, you can make the nail relocate in a circular pattern.)Explore the civilization OutsideAsk students to list equipments that usage the spinning motion of motors to carry out work. Have actually students determine the kind of mechanical work done by the spinning components of each of this machines. (A power lawnmower"s spinning blades cut grass; a car"s turn wheels move the automobile down the street; a ice player"s spinning spool advances the audio or video clip tape)Explore the Film and Web SitePresent connected clips from the movie Tesla: grasp of Lightning to the class. The following are part suggestions:04:30 - 11:41My early Years: Tesla"s at an early stage education18:36 - 23:21War of the Currents: The fight between Edison"s direct current and Tesla"s alernating current23:21 - 27:40 Niagara: synopsis of the an initial hydroelectric plantAfter the town hall clips indigenous the film, ask college student to compose a report about the series of difficulties that led young Nikola Tesla come his development of the AC induction motor. Exactly how did Tesla take benefit of his opportunities and overcome obstacles come his success? How essential to Tesla"s success was his science education? to find extr information on i m sorry to base this report, have students refer to the Life and also Legacy area the this site.What do You Think?Ask student to comment on what life can have to be like prior to electric motors came into common use. What can your community have to be like? To offer students one idea that the enormity that Tesla"s contributions to the world, species a class outing come a historical museum to watch how world lived and also worked prior to Nikola Tesla conceived and also designed the very first long-distance power transmission device in 1895.ASSESSMENT RECOMMENDATIONSThe teacher should consider the adhering to when assessing students:How fine each student defined the idea of the motor in course discussion. Exactly how did the students to compare the operation of a straightforward electromagnet come the magnets working in a motor.How well could students attract a diagram of one induction motor and also explain the rotating magnetic field that renders it operate.How well did course discussion present that the students construed not only the working of the engine but also the services of motors operating far away from power plants.

EXTENSIONSGuide students through a conversation of what happens within an electric generator or dynamo. A coil of numerous turns the copper wire is rotated in between the North and South poles that a very an effective magnet. As the rotating coil of cable passes one pole of the magnet, electron in the wire are thrust in one direction. Once the rotating coil of cable passes the various other pole that the magnet, this electrons are pulled in the contrary direction. Due to the fact that the electrical present keeps reversing direction, it is called alternating current.

Tesla because that Teachers Index
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Lesson plan emerged by Jim and also Judy Hardesty
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