[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.