Nota Terkini

Thursday, February 18, 2010

[Science Form 3] The Alternatives

  • Electric generators like thermal, diesel, nuclear and gas turbine generators use raw materials that are non-renewable sources of energy.

  • Solar energy is:
    • obtained from the sun
    • an electrical energy
    • used to supply electrical energy to:
      • Satellites
      • Electronic calculators
      • Clocks
      • Certain vehicles

  • Biomass
    • Organic material that can be charged into energy
    • Energy can be released from biomass through
      • Burning
      • Fermentation
      • Chemical reaction or bacterial action

    • In a fermentation process, the mixture of yeast and sugar is changed into carbon dioxide and ethanol fuel.
    • Biomass is in large supply and is a renewable source of energy that can be used as a substitute for fossil fuel.

1 comment:

  1. too little notes lah!! need more notes :)

    ReplyDelete