Thursday, 1 December 2011


  • Energy enables living things and non-living things to carry out various types of process or work.
  • Energy is important for living things to carry out life processes and non-living things to function or operate.
  • Photo Credit: Flickr.comEnergy is one of the most fundamental parts of our universe.
  • We use energy to do work. Energy lights our cities. Energy powers our vehicles, trains, planes and rockets. Energy warms our homes, cooks our food, plays our music, gives us pictures on television. Energy powers machinery in factories and tractors on a farm.
  • Energy from the sun gives us light during the day. It dries our clothes when they're hanging outside on a clothes line. It helps plants grow. Energy stored in plants is eaten by animals, giving them energy. And predator animals eat their prey, which gives the predator animal energy.
  • Everything we do is connected to energy in one form or another.
  • Energy is defined as:  "the ability to do work."
  • When we eat, our bodies transform the energy stored in the food into energy to do work. When we run or walk, we "burn" food energy in our bodies. When we think or read or write, we are also doing work. Many times it's really hard work!
  • Cars, planes, light bulbs, boats and machinery also transform energy into work.
  • Work means moving something, lifting something, warming something, lighting something. All these are a few of the various types of work. But where does energy come from?

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