Topic 10 Stored energy in Fuels Flashcards
Key Word: Fuel
A substance
That can be eaten or burned
To produce energy
Key Word: Stored Energy
Energy that is stored in something
E.g. Food or fuel
It can be changed
Key Word: Input Energy
Energy we need
To put in
To start a fue burning
Key Word: Output Energy
Energy such as heat & light energy
That is produced when fuel burns
Where does the energy come from that we use to run and play?
From energy that is stored in the food we eat
How do plants get their energy?
Plants us the Sun’s energy to make is OWN food.
Where do plants store their food?
In its leaves, stems and fruit.
Why does wood burn and make heat and light?
Because it releases the energy that is stored inside it.
Name 5 sources of energy that we use as humans?
Coal Gas Paraffin Candle wax Petrol
What were candles originally made of and what are they now made of?
Originally: Beeswax & plant wax
Now: Paraffin wax
Why do the candles burn?
They release the energy that is store in the wax
How does petrol make a car move?
The petrol that is in the car’s tank is burned in the car’s engine
The heat makes the engine work
This makes the car move
What do fuels need to start them burning?
Energy
What energy source does a candle need to start it burning?
A burning match
What would you call this energy needed to get the candle to burn?
Energy InPut
Do all fuels need the same mount of input energy to get them to burn?
No
Compare two fuels to show how they need different amounts of energy to get them to burn.
A candle is easy to light - just bring a burning match near.
A big log fire takes a lot go get it burning - we use firelighters (firelighters are easy to set alight)
Describe what OUTPUT energy is.
When fuels start burning
The stored energy is released to other forms of energy
Like light & heat
What would you use wood for?
What is the output energy of that called?
Making a fire
Heat
What would you use petrol for?
What is the output energy of that called
Driving a car
Heat
Energy is stored in …..
Fuels
We use fuels as….
sources of useful energy
e.g. heat & light
Everyday fuels that we use are (6)…..
Coal Wood Petrol Paraffin Gas Candle Wax
What is needed to make fuels burn?
Input energy
When we burn fuels, we get useful…..
Output energy
Key Words: Extinguish
To put something out
Key Words: Firefighters
People who are trained
To help put out
Uncontrolled fires
For fuels to keep burning, what is needed?
Heat & oxygen
What makes us the fire triangle.
Oxygen, Heat & Fuel
What is a candle snuffer?
A small metal cup on the end of a long handle which was used to put our candles.
When you think about a candle snuffer, what does it tell you about what is a good way to to put out a fire?
We must cut off the oxygen supply.
Give two examples of how we can cut off the oxygen supply in a fire?
Cover the flames with a blanket
Pour water on it
What are the three things that firefighters do to put out a fire?
- Remove all fuel from the fire
- Remove the heat (add water)
- Smother the fire by preventing it getting oxyge
Keywords: Prevent
To keep something from happening
Why are controlled fires useful?
They give us warms & help us cook our food.
Ways to prevent fires. Do not play with….
Matches
Do not pour …… onto a burning fire
Any fuel like petrol or lighter gel
What must we do when burning candles to prevent a fire?
Put them in a sturdy candle holder
Don’t put them near something that can catch fire
What should we do to stop fires starting from our fireplaces?
Put a fireguard in front of it.
What must we remember about pots when we think about preventing fires?
Never leave them cooking on the stove when a adult is not in the kitchen
What must you do if you suspect a gas leak
Turn off the supply
Phone a gas supplier
Do not used ….. electrical appliances.
“damaged”
What must you remember about camp fires?
Always makes sure they are extinguished when you are finished.
What is the number 1 thing to do when a fire breaks out?
Stay calm!
What must you do if there is smoke?
Stay low on the ground
What in a fire can cause more damage than the actual flames?
Poisonous gases
Why must you stay low to the ground?
The smoke goes upwards
Once you have dropped to the ground, what must you do next
- Crawl away from the flames
- Head towards the nearest exit & get out of the building
- Call the fire station
Key concept: Fires can be a threat to our
Community
