ELECTRICITY AND MAGNETISM

CURRENT ELECTRICITY

When an electrical charge moves in an electrical conductor we have current electricity. (Metals, such as copper)

An electric circuit is made up of different parts which are all connected together.

1.      -Generators: These supply the electricity

2.      Conductors: These are metals wires, which are covered in insulating material and let the electricity flow.

3.      Electrical components: These transform electricity into another form of energy light bulb transform into light.

4.      Switches: These open and close the electric circuit.

MAGNETISM

Magnetism is the ability to attract some metals. Magnets can be natural or man-made (Magnetite it`s an example of a natural magnet).All magnets have two poles. These are called the North Pole and the South Pole.

When two magnets touch at the poles, one of two things can happen:

·         If we put the same poles together, the magnets will repel each other.

·         If we put opposite poles together, the magnets will attract each other.

ENERGY SOURCES

Energy sources provide us with energy. There are two types of energy sources.

1.      Non-renewable energy sources. They can`t be replaced in our life time. Some example are: uranium used in nuclear power station, oil, coal, gas…

2.      Renewable energy sources. They can be replaced and never run out. Some examples are: Biomass, organic materials, sun light, wind, water, geothermal…