Activity on Lesson Four

  • What is energy?
  • List ten domestic appliances or machines that use energy?
  • State the law of conservation of energy.
  • Give one example of an appliance that converts electrical energy to heat energy.
  • Give one example of an appliance that converts chemical energy to heat energy.
  • What is a fruit blender used for?
  • What is refrigerator used for?
  • What is an air conditioner used for?
  • Mention five places where air conditioners are used.
  • What energy is usually supplied by PHCN?

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