The forms of the energy and their changes

The energy

Energy forms

Energy forms

If you  look around you , You will notice that every thing 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 ?

The Energy is the ability to do work .

The forms of the energy

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

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

  • There is a heat energy produced by the heater .

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

  • There is a chemical energy stored in the battery .

  • There is a 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 change 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 the 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 and the washing machine .

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

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

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

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

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