Elecc

-ability to do work

-the fundamental need of our everyday

life

tells us that

the only thing that takes place with energy is the

transformation from one form to another.

defines as the process

where there is a change in energy from one form

to another.

the radiation from the sun

contains energy, and also the radiation from light

or a fire

Wood and oil contain energy

in a chemical form.

energy at rest, for example, the

energy of water reservoir at a certain height.

in motion, energy of movement,

as wind or in a water stream.

this is indicated by

temperature. The higher the temperature, the

more energy present in the form of heat.

the energy of a rotating

shaft.

a dynamo or generator and a

battery can deliver electrical energy. The higher

the voltage and the current, the more electrical

energy is made available.