The forms of the energy and their changes

 

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 ?

 

You should know that 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 .

  

  The kinds  of  the energy .

• You should know that there is a kinetic energy produced by the electric fan and the washing machine .

  

  There are several forms of the energy .

• There is a light energy produced by the electric lamp or the Sun .

   

• There is a heat energy produced by the heater .

  

  The energies are used by  the different devices .

• 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 .

   

  

  The piano produces a sound energy .

Examples of some changes of the energy 

Some changes of energy .

You  noticed that 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 light , when the electric current pass through it .

 

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

In the fan , The electric energy changes into the kinetic energy .

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 .

 

You should know that The chemical energy changes into the electric energy as in the battery .