Energy is causing things to happen all around us. During the day, the sun gives out light and heat energy. At night, street lamps use electrical energy to make light.
Energy makes everything happen-in people, plants and machines - and can be divided into two different types:
Energy that is stored is called potential energy.
Energy that is moving is called kinetic energy.
To demonstrate the different types of energy, try this example: Put a pencil at the side of your desk and push it off to the floor. The pencil is moving and using kinetic energy. Now, pick the pencil up and put it back on the desk. You used your own energy to lift and move the pencil. Moving it higher than the floor adds energy to it. As it rests on the desk, it has potential energy. The higher it is, the further it could fall, so the pencil has more potential energy the higher you raise it.

Energy is causing things to happen all around us. During the day, the sun gives out light and heat energy. At night, street lamps use electrical energy to make light.

Energy makes everything happen-in people, plants and machines - and can be divided into two different types:
  • Energy that is stored is called potential energy.
  • Energy that is moving is called kinetic energy.

To demonstrate the different types of energy, try this example: Put a pencil at the side of your desk and push it off to the floor. The pencil is moving and using kinetic energy. Now, pick the pencil up and put it back on the desk. You used your own energy to lift and move the pencil. Moving it higher than the floor adds energy to it. As it rests on the desk, it has potential energy. The higher it is, the further it could fall, so the pencil has more potential energy the higher you raise it.