15-05-2015, 04:04 PM
Our main energy sources
Industrialised countries need large amounts of energy
Most of this energy comes form fossil fuels which are burnt in power stations, factories, homes and vehicles
These fossil fuels formed millions of years ago, and are non-renewable
Once the fossil fuels have been used up there will be no more to replace them
Oil is useful forother things too
Oil is a mixture of different compounds
We can separate these substances by a process called fractional distillation
These fractions include fuels like petrol, diesel and aviation fuel
Parts of oil are also used to make plastics, medicines, paints, dyes and even wax candles