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Mostrando resultados de 657
  • The resistance of a wire and its dimensions | Recurso educativo 41321

    The resistance of a wire and its dimensions

    Tiching explorer Organización

    • 3073 visitas

    In this interactive simulation students can vary the material (copper, iron or tungsten), the lenght and the cross-section of a conductor and obtain the overall resistance. From here they can infer the…

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  • Important materials | Recurso educativo 565082

    Important materials

    EduBook Organización

    • 2326 visitas

    There are many materials that are very important and useful. 6.1. Metals Metals are common materials that are extracted from minerals. They are used to conduct electricity, build buildings and make…

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  • Complete - Remember | Recurso educativo 526039

    Complete - Remember

    EduBook Organización

    • 2272 visitas

    Complete: In our great-grandparents' time, houses did not have . They used oil lamps. Most children left when they were 10 or 12, and went to work. In our grandparents' time, flats had…

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  • Unit 5: The Atmosphere | Recurso educativo 565900

    Unit 5: The Atmosphere

    EduBook Organización

    • 2254 visitas

    Acid rain (n): rain or snow which are acidic due to the presence of secondary pollutants. air pollution (n): when the composition of the air changes due to the presence of contaminants. aurora borealis…

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  • Match. Electric motors and alternators | Recurso educativo 585458

    Match. Electric motors and alternators

    EduBook Organización

    • 2232 visitas

    Do these sentences refer to alternators or electric motors? It transforms electrical energy into kinetic energy. The electrical current makes a magnet on an axle move. The spinning of the magnet near a…

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  • Non-renewable sources of energy | Recurso educativo 483461

    Non-renewable sources of energy

    EduBook Organización

    • 2187 visitas

    4.1. Coal Coal is a solid, black rock. It is the fossilised remains of huge masses of vegetation buried under the ground millions of years ago (figure 1). It is used mainly as fuel in coal-fired power…

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  • Complete. Nuclear energy | Recurso educativo 571600

    Complete. Nuclear energy

    EduBook Organización

    • 2102 visitas

    Complete the text about nuclear energy with the correct words: electricity radiation uranium Nuclear power stations use as a source of energy. They use it to produce . The great disadvantage of this…

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  • Match. The colonies resources | Recurso educativo 484224

    Match. The colonies resources

    EduBook Organización

    • 2059 visitas

    Match each definition with a concept: Black mineral rich in carbon used as a fuel. Hard, shiny metallic element with magnetic properties. Metallic chemical element, bluish-white in colour, used to make…

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  • Investigate. Electrical energy | Recurso educativo 571609

    Investigate. Electrical energy

    EduBook Organización

    • 2067 visitas

    The amount of electrical energy produced in hydroelectric power stations depends on the amount of water stored in the reservoir. When there is a drought, less electrical energy is generated because…

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  • Responsible energy consumption – we can all help | Recurso educativo 571619

    Responsible energy consumption – we can all help

    EduBook Organización

    • 2007 visitas

    We can all contribute to responsible energy consumption by: Consuming less electricity at home: switch off unnecessary lights, switch off the television when you leave the room, use low consumption home…

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