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

Note:-  This seminar download only contain PPT