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gr 7 energy transformation

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  • . It is composed of an acid solution with two different metals dipped in.
    simple electric cell
  • A cellular phone
    Electric energy into light and sound energy.
  • Energy is neither created nor destroyed but it changed from one form to another
    Law of conservation of energy
  • Sewing machine
    Electric energy into mechanical energy.
  • Alarm clock
    - Chemical energy into kinetic and sound energy.
  • car engine
    Chemical energy into heat energy
  • car radio
    Electric energy into sound energy.
  • car lamps
    Electric energy into light energy.
  • Television
    Electric energy into light and sound energy.
  • Solar cell
    Solar energy into electric energy.
  • car dynamo
    Mechanical energy into electric energy.
  • Electromagnetic pollution causing heart diseases
    The webs of wireless transmitters of cellular phones
  • car air conditioner
    Electric energy into heat energy.
  • Pollution of (air - water – soil ) So it causes ( cancer- food poisoning )
    chemical pesticide
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