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Delta Modern Language School
Grade 4
Date ......./......./………

                   Important points on Unit (3) Concept 3.2

                                     About Fuels

• Fuel is one of the most important resources of energy that humans depend
   on to get energy.

• Cars use the chemical energy stored in the fuel, burn it in the engine and
   convert the chemical energy into thermal, kinetic, light and sound
   energies.

Fuel: - is any substance that produces energy when it is burned.

Uses of some different forms of fuel: -

1.Coal, natural gas and wood may be used in cooking.
2.Oil, natural gas or coal may be used in generating electricity.
3.Coal and wood may be used in warming houses.
4.Gasoline (oil) or natural gas may be used to operate all means of transportation.

                                   Types of fuel

    Points of             Biofuel                fossil fuel
  comparison
                • It is a type of fuel that • It is a type of fuel that is formed
   Definition    is formed from living from decomposition of the
                 organisms that can be remains of dead organisms like
Primary source
 Renewable or   planted.              plants and animals under certain
non-renewable                         conditions.

   Examples     • The sun             • The sun

                • Renewable.          • Non-Renewable.

                • wood, charcoal, grass, • coal, natural gas, oil and
                 corn and wood chips. gasoline.

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