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  • Suggested questions and discussion starters: <br /> – What can you see in this photo? <br /> – Do you think this is renewable or non-renewable energy production? <br /> – Can you think or any advantages of solar energy? And any disadvantages? <br /> – Where would be a good location in Spain for installing heliostat fields? <br />

Energy Energy Presentation Transcript

  • © Oxford University Press España S. A., 2012 EnergyEnergy
  • What do we know?
  • Energy Where do these vehicles get the energy they need to function? How is the chemical energy of fuel transformed into movement?
  • Transformation of energy How is energy transformed in each of these photos? What does the ‘principle of energy conservation’ state?
  • Non-renewable energies and the environment What effects does the use of non-renewable energies have on the environment? Do you have any suggestions of how to stop these problems getting worse?
  • Renewable energy sources What types of renewable energies are being produced in these photos? Give some advantages and disadvantages of each one.
  • The internal combustion engine Can you identify the four parts of the four-stroke cycle (intake, compression, combustion-power, exhaust) in this image? What fuels does an internal comustion engine use?
  • What have we learned? EnergyEnergy Types of energyTypes of energy Capacity of an object to transform an energy source into work. Mechanical, nuclear, thermal or calorific, chemical, electrical, electromagnetic, and sound. Transformation of energy Transformation of energy The law of conservation of energy: Energy cannot be created or destroyed; it can only be transformed. Measurement units Measurement units Joules, in the International System, and calories. Energy sources Energy sources Non-renewable: comes from limited natural resources Non-renewable: comes from limited natural resources Natural resources that provide different forms of energy. Nuclear energy, energy from fossil fuels (coal, petroleum and natural gas). Renewable: comes from abundant natural resources that, in principle, are unlimited Renewable: comes from abundant natural resources that, in principle, are unlimited Hydraulic, solar, wind, marine, geothermal, biomass and MSW energy.
  • What have we learned? Heat engines Heat engines External combustion engine External combustion engine Transform thermal energy from a fuel into mechanical energy to perform work. Steam engine and steam turbine. Internal combustion engine Internal combustion engine Combustion engine and turbojet.
  • What have we learned? Heat engines Heat engines External combustion engine External combustion engine Transform thermal energy from a fuel into mechanical energy to perform work. Steam engine and steam turbine. Internal combustion engine Internal combustion engine Combustion engine and turbojet.