Page 5 - sheet 2nd term prim 4_Classical
P. 5
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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