Podcast
Questions and Answers
Match the following fire safety practices with their descriptions:
Match the following fire safety practices with their descriptions:
Playing with matches = Increases the risk of fire Proper candle placement = Minimizes risk of catching flammable items on fire Cooking supervision = Ensures safety in the kitchen Gas leak response = Turn off the supply and contact the gas supplier
Match the following actions with their consequences in fire safety:
Match the following actions with their consequences in fire safety:
Pouring petrol on a fire = Increases the intensity of the flames Using damaged electrical appliances = Can cause electrical fires Drying clothes near a heater = Increases fire risk Not extinguishing a braai fire = Can lead to a fire spreading
Match the following fire-fighting methods with their purposes:
Match the following fire-fighting methods with their purposes:
Water = Cuts off oxygen supply and cools the flames Fireguards = Prevents sparks from escaping the fireplace Candle holders = Provides stability for burning candles Adult supervision in cooking = Reduces the risk of unattended cooking fires
Match the following items with their risks related to fire:
Match the following items with their risks related to fire:
Match the following statements with their fire prevention strategies:
Match the following statements with their fire prevention strategies:
Match the following fuels with their primary uses:
Match the following fuels with their primary uses:
Match the vocabulary terms with their definitions:
Match the vocabulary terms with their definitions:
Match the elements of a fire triangle with their descriptions:
Match the elements of a fire triangle with their descriptions:
Match the following fuels with their energy sources:
Match the following fuels with their energy sources:
Match the fuels with their characteristics:
Match the fuels with their characteristics:
Match the following items with their role in burning fuel:
Match the following items with their role in burning fuel:
Match the process with its description:
Match the process with its description:
Match the fuels with their energy release forms:
Match the fuels with their energy release forms:
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Study Notes
Stored Energy in Fuels
- Fuels are substances that produce energy when burned, providing heat and power.
- Energy stored in fuels is referred to as stored energy; it is gradually released during combustion.
- Food serves as a biological fuel, supplying energy to sustain bodily functions when metabolized with oxygen.
- Common fuels include coal, natural gas, and paraffin; they are integral to daily activities like heating homes, cooking, and providing light.
- Candle wax, primarily made from paraffin today, releases light and heat energy when ignited.
- Petrol powers vehicles by releasing stored energy in the engine during combustion.
Uses of Different Fuels
- Petrol: Fuels engines for transportation.
- Firewood: Utilized for heating and cooking purposes.
- Gas: Primarily used for heating and cooking.
- Paraffin: Employed for lighting, heating, and cooking.
- Candle Wax: Provides light.
- Coal: Generates electricity in power stations and assists in heating.
Burning Fuels
- Ignition of fuels requires input energy, such as a match flame, to initiate the burning process.
- Burning fuels release stored energy, transforming it into heat and light energy, termed output energy.
- The fire triangle consists of three essential elements: fuel, heat, and oxygen. Removal of any element will extinguish the fire.
- A burning match provides the necessary heat to ignite the wick of a candle, allowing wax to vaporize and mix with oxygen to sustain a flame.
- Water is often used by fire-fighters to extinguish fires by cutting off the oxygen supply and lowering the heat.
Safety with Fire
- Avoid playing with matches, lighters, or flammable liquids to reduce fire risk.
- Never add fuels, like petrol, to an existing fire as it can intensify the flames.
- Secure candles in stable holders and keep them away from flammable items such as curtains.
- Employ fireguards to protect against sparks from fireplaces.
- Do not dry clothes near heaters or cookers to prevent accidental fires.
- Cooking should always be supervised by adults to prevent unattended pots from igniting.
- In case of a gas leak, shut off the gas supply and contact a gas supplier immediately.
- Refrain from using damaged electrical appliances to avoid fire hazards.
- Ensure all open fires or barbecues are fully extinguished post-use to prevent rekindling.
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