energy resources

• What is a biofuel?

  any fuel taken from living or recently living organisms.
• are biofuels renewable?

  yes
• Can biofuels be used to generate eletricity?

  yes such as ethanol and methane
• What is a wind turbine?

  electricity generator on top of a tall tower
• What is tidal power?

  a tidal power station traps water from each high tide behind a barrage
• What are solar cells?

  flat solid cells and use the suns energy to generate eletricity directly.
• Where does geothermal energy come from?

  energy transferred by radioactive substance deep inside earth
• What do solar heating panels do?

  use the suns energy to heat water directly
• What do fossil fuels do?

  produce increases levels of greenhouse gases
• What do nucleur fuels do?

  Produce radioactive waste
• Advantages of nuclear power?

  no greenhouse gases

  more energy transferred than fossil fuels
• advantages of renewable energy sources?


  • never run out
  • do not produce greenhouse gases
  • do not create radioactive waste producs
• Disadvantages of renewable energy sources?

  • cannot meet world demand
  • wind turbines create a whining noise
  • solar cells need to cover large areas
• Disadvantages of nuclear power stations?

  • expensive to run
  • carbon capture of fossil fuel emmissions is likely to be expensive