Fuels and Stored Energy Quiz
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Questions and Answers

What is the process that occurs when the heat from a flame interacts with candle wax?

  • It melts the wax and creates gas. (correct)
  • It cools the wax to solidify.
  • It turns the wax directly into ash.
  • It solidifies the wax into a new shape.
  • What technique do fire-fighters use to extinguish a fire effectively?

  • Create more flames to consume the fire.
  • Increase the temperature to smother the fire.
  • Add more fuel to the fire.
  • Cut off the oxygen supply. (correct)
  • Which of the following is a recommended precaution when using candles?

  • Relight any candle that has burned out to prevent accidents.
  • Candles must always be placed in sturdy candleholders. (correct)
  • Candles should be placed near flammable materials.
  • Candleholders should be made of metal.
  • What action is advised if a gas leak is suspected?

    <p>Turn off the gas supply and call a gas supplier.</p> Signup and view all the answers

    What is a hazardous activity related to using heaters and cookers?

    <p>Drying clothes on or near them.</p> Signup and view all the answers

    What is stored energy in fuels primarily used for?

    <p>To produce heat or energy</p> Signup and view all the answers

    Which of the following is not a necessary element for a fire?

    <p>Electricity</p> Signup and view all the answers

    What role does input energy play in burning fuels?

    <p>It ignites the fuel</p> Signup and view all the answers

    When petrol is used in a car, what type of energy is released?

    <p>Stored energy</p> Signup and view all the answers

    Which of the following fuels is primarily used for cooking and heating?

    <p>Gas</p> Signup and view all the answers

    What happens to stored energy when fuel burns?

    <p>It is transformed into other forms of energy</p> Signup and view all the answers

    Which type of fuel is primarily used to produce electricity at power stations?

    <p>Coal</p> Signup and view all the answers

    What is the consequence of removing any element from the fire triangle?

    <p>The fire will extinguish</p> Signup and view all the answers

    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.

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