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Questions and Answers
What is the process that occurs when the heat from a flame interacts with candle wax?
What technique do fire-fighters use to extinguish a fire effectively?
Which of the following is a recommended precaution when using candles?
What action is advised if a gas leak is suspected?
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What is a hazardous activity related to using heaters and cookers?
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What is stored energy in fuels primarily used for?
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Which of the following is not a necessary element for a fire?
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What role does input energy play in burning fuels?
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When petrol is used in a car, what type of energy is released?
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Which of the following fuels is primarily used for cooking and heating?
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What happens to stored energy when fuel burns?
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Which type of fuel is primarily used to produce electricity at power stations?
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What is the consequence of removing any element from the fire triangle?
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Study Notes
Stored Energy in Fuels
- Fuels are substances that can produce energy when burned, such as coal, natural gas, and paraffin.
- Energy stored in fuels is called stored energy, gradually released when the fuel burns.
- Food acts as fuel for the body, breaking down with oxygen to release energy for bodily functions.
- Common uses of fuels include heating, lighting homes, and cooking meals.
- Different fuels and their specific uses:
- Petrol: Runs engines.
- Firewood: Used for heating and cooking.
- Gas: Provides heating and cooking.
- Paraffin: Used for lighting, heating, and cooking.
- Candle wax: Offers light.
- Coal: Generates electricity and heat.
Burning Fuels
- Fuels require input energy to ignite; for example, a match is used to light a candle.
- When a fuel burns, it releases stored energy as output energy, transforming it into heat and light.
- Three essential elements for combustion are:
- Fuel (e.g., wood)
- Heat (e.g., matches for ignition)
- Oxygen
- These elements form the fire triangle; removing any one of them extinguishes the fire.
- The process of a candle burning includes melting wax, releasing gas, and creating a flame that combines with oxygen.
Safety with Fire
- Important fire prevention measures include:
- Avoid playing with matches, lighters, or flammable liquids.
- Never pour petrol onto a fire.
- Use sturdy candleholders and keep candles away from flammable items.
- Install fireguards in front of fireplaces.
- Avoid drying clothes near heaters or cookers.
- Always supervise cooking and never leave pots unattended.
- In the event of a suspected gas leak, turn off the supply and contact a gas supplier.
- Do not use damaged electrical appliances.
- Ensure all fires are completely extinguished after use, especially after barbecues or open fires.
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Description
Test your understanding of stored energy in fuels with this quiz. Explore the concepts of fuel types, input and output energy, and their applications in daily life. Perfect for anyone looking to deepen their knowledge of energy sources.
