WHAT IS ELECTRICITY?
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WHAT IS ELECTRICITY?
Atmospheric phenomena present in nature: i.e. a storm. Electric current, its composition and behaviour. Good and bad conductors. Electric, nuclear and Eolic power-stations. Uses of electricity. Summary.
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INTRODUCTION
- Almost all the things which we use at work, as well as the gadgets we have at home, not to mention various transport systems, all run on electricity.
- The ancient Greeks and the electron
- The phenomena of electricity : storms
- The static electricity
- The electric current
ELECTRIC CURRENT
- What is the electric current?
- The nuclei of the atoms: Protons and neutrons
- The electrons. Elements: conductors and resistances.
- The phenomena of an electrical current are very similar to that of a flow of water.
- Electrical circuits
ELECTRIC POWER-STATIONS
- Thermal power-stations use combustible fossils to produce steam which then is used for generating electricity.
- Nuclear power-stations use the energy produced by nuclear fission in order to do the same.
- Solar power-stations
- Hydraulic power-stations. Sea-power stations. Eolian power-stations.
- Process employed in producing electricity
- The different voltages
THE USE OF ELECTRICITY
- Advantages of electrical energy: it can be easily transformed into other kinds of energy.
- Heat, light, mechanical energy, chemical energy.
- Industry depends on electricity to a great extent for its production. Agriculture and cattle-farming use electrical energy
SUMMARY |
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