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The forms of energy and their changes

The energy

Energy forms

Energy forms

If you look around you, you will notice that everything needs the energy to do their functions. You need food to obtain the energy that helps you to work,  move, play, …..etc, Your car needs the fuel to obtain the energy that causes the motion of its engines.

Do you know what is the meaning of the energy?

Energy is the ability to do work.

The forms of energy

  • There is potential energy stored in the spring of the toy car.

  • There is kinetic energy produced by the electric fan and the washing machine.
  • There is light energy produced by the electric lamp or the Sun.

  • There is heat energy produced by the heater.

  •  There is electric energy produced by the dry cell (battery) and the solar cells.

  • There is chemical energy stored in the battery.

  • There is sound energy produced by the piano and the radio.

Examples of some changes of the energy 
Some changes of energy
Some changes of energy

The potential energy changes into the kinetic energy as in the spring of the children toys.

The kinetic energy can change into the sound energy as in the violin, the guitar, and when you knock on the door.

The kinetic energy changes into the heat energy, When you rub your hands, when you hammer on a piece of iron, and when you remove a nail from a piece of wood.

The kinetic energy changes into electric energy as in the dynamo.

The electric energy changes into the light energy as in the electric lamp, where it lights, when the electric current passes through it.

The electric energy changes into the kinetic energy as in the electric fan, the electric motor & the washing machine.

The electric energy changes into the sound energy as in the recorder or the radio.

The light energy change into heat energy as in the solar heater. 

The light energy changes into electric energy as in the solar cells.

The chemical energy changes into electric energy as in the battery.

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