Fuels and Stored Energy Quiz

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Questions and Answers

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:

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:

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:

Lighters = Flammable item that can start a fire Braai fires = Requires extinguishing after use Clothes drying on heaters = Can ignite from heat exposure Unattended pots = Can lead to kitchen fires Signup and view all the answers

Match the following statements with their fire prevention strategies:

Keep matches away from children = Helps prevent accidental fires Use sturdy candleholders = Prevents tipping and spilling of wax Monitor cooking pots = Reduces chance of overheating Check for gas leaks = Avoids potential explosions Signup and view all the answers

Match the following fuels with their primary uses:

Petrol = To run engines Firewood = Heating and cooking Coal = Making electricity at power stations Candle wax = Lighting Signup and view all the answers

Match the vocabulary terms with their definitions:

Stored energy = Energy that is stored in something Input energy = Energy needed to start a fuel burning Output energy = Energy produced when fuel burns Extinguish = To put out Signup and view all the answers

Match the elements of a fire triangle with their descriptions:

Fuel = Substance like wood that burns Heat = Energy source to ignite fuel Oxygen = Gas necessary for combustion Extinguish = Process of stopping a fire Signup and view all the answers

Match the following fuels with their energy sources:

Natural gas = Heating and cooking Paraffin = Lighting, heating and cooking Food = Providing energy for the body Gas = Heating and cooking Signup and view all the answers

Match the fuels with their characteristics:

Candle wax = Made from beeswax or plant waxes Coal = Used for generating electricity Petrol = Stored energy for vehicle movement Firewood = Commonly used for heating Signup and view all the answers

Match the following items with their role in burning fuel:

Candle wick = Needs input energy to ignite Matches = Source of input energy Oxygen = Essential for combustion Stored energy = Releases energy when burned Signup and view all the answers

Match the process with its description:

Combustion = Chemical reaction releasing heat and light Extinguishing = Stopping a fire from burning Heating = Using energy to raise temperature Cooking = Preparing food using heat Signup and view all the answers

Match the fuels with their energy release forms:

Candle = Light and heat energy Coal = Heat and electricity Firewood = Heat and light Food = Biological energy Signup and view all the answers

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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Description

Test your knowledge on the stored energy in fuels with this quiz! Understand key concepts like input energy, output energy, and the various uses of fuels in daily life. This quiz will help reinforce your understanding of how fuels function and the energy transformations that occur during combustion.