the energy journey: part 3 be energy wise
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The Energy Journey: Part 3 Be Energy Wise. How to use electricity sensibly. Your Climate Cops mission. To understand that everyday appliances use electricity To understand that different appliances have different power ratings - PowerPoint PPT PresentationTRANSCRIPT
The Energy Journey: Part 3Be Energy Wise
How to use electricity sensibly
Your Climate Cops mission
• To understand that everyday appliances use electricity
• To understand that different appliances have different power ratings
• To understand how power ratings affect the amount of energy used
• To identify how to save energy by understanding:
- Why do we want to save electricity?- How will we save electricity?- How will we know we’ve saved electricity?
Activity 1:
Watt is Right?
How do we measure electricity use?
Did you know…
• Lots of things in our homes need electricity to work
• The amount of electrical power an appliance uses is measured in Watts (W) and Kilowatts (kW)
• 1000 watts = 1 kilowatt
Your mission
Are you ready…
Can you put the items in order starting with the one that uses the least amount of power first?
Climate Cops discussion
So, which appliances do you think need lots of power to make them work?
How long do you or your family use the different appliances every day?
For how long do you use the appliances?
Electrical Appliance
Watts (W)
Kilowatts (kW)
The number of hours used
Electrical energy used in kWh
Cooker 10,000W 10kW
Washing machine
3,000W 3kW
Kettle 2,000W 2kW
Vacuum Cleaner
1,000W 1kW
Microwave 800W 0.8kW
Toaster 750W 0.75kW
For how long do you use the appliances?
Electrical Appliance
Watts (W)
Kilowatts (kW)
The number of hours used
Electrical energy used in kWh
Television 300W 0.3kW
Fridge/Freezer 125W 0.125kW
Lamp 60W 0.06kW
Ordinary bulb 40W 0.04kW
Games console 10W 0.01kW
Energy saving bulb
7W 0.007kW
• POWER: we measure the amount of electrical power an appliance uses in watts (W) or kilowatts (kW)
• ENERGY: we work out how much electrical energy is used by multiplying the power of the appliance by the number of hours it is used for. This gives us the amount of energy used in kilowatt-hours or kWh
• One kWh is the energy used when one kilowatt of power is used for one hour
Power vs. Energy
Saving energy
Climate Cops quick quiz…
• If an ordinary light bulb uses 40 watts of power…
How much energy would be used if it was on for 4 hours?
• If an energy saving light bulb uses 7 watts of power…
How much energy would be used if it was also on for 4 hours?
• How much energy would be saved?
Activity 2:
The Climate Cops Quiz
Do you know why it’s important to be energy wise?
Let’s play the Climate Cops quiz to find out.
Are you ready?
Climate Cops: Question 1
ARE THEY CONNECTED? TRUE OR FALSE
Statement 1
• The light is left on when there is no one in the room
Statement 2
• This wastes lots of electricity
The Climate Cops quiz
Climate Cops: Question 2
ARE THEY CONNECTED? TRUE OR FALSE
Statement 1
• We have three energy saving light bulbs
Statement 2
• If every house fitted three energy saving light bulbs, it would save enough energy to run the country’s street lights for a year
Source: www.energysavingtrust.org.uk
The Climate Cops quiz
Climate Cops: Question 3
ARE THEY CONNECTED? TRUE OR FALSE
Statement 1
• The TV is left on standby
Statement 2
• Appliances on standby don’t use energy
The Climate Cops quiz
Climate Cops: Question 4
ARE THEY CONNECTED? TRUE OR FALSE
Statement 1
• Hot food is put in the fridge or freezer
Statement 2
• More energy will have to be used to cool the food down
The Climate Cops quiz
Climate Cops: Question 5
ARE THEY CONNECTED? TRUE OR FALSE
Statement 1
• Boiling a full kettle of water to make one cup of tea
Statement 2
• Energy and water are not being wasted
The Climate Cops quiz
Climate Cops: Question 6
ARE THEY CONNECTED? TRUE OR FALSE
Statement 1
• We have a dripping hot water tap in our kitchen
Statement 2
• It wastes energy and in one week wastes enough water to fill half a bath
Source: www.energysavingtrust.org.uk
The Climate Cops quiz
Climate Cops: Question 7
ARE THEY CONNECTED? TRUE OR FALSE
Statement 1
• A house with dirty windows
Statement 2
• It would make no difference if the windows were clean
The Climate Cops quiz
Climate Cops: Question 8
ARE THEY CONNECTED? TRUE OR FALSE
Statement 1
• Heat can escape through walls, windows, the roof, floors, doors and draughts
Statement 2
• Insulating your home will stop the heat from escaping
The Climate Cops quiz
Climate Cops: Question 9
ARE THEY CONNECTED? TRUE OR FALSE
Statement 1
• We have an energy saving fridge
Statement 2
• Energy saving appliances cost less to run and also help reduce climate change
The Climate Cops quiz
Climate Cops: Question 10
ARE THEY CONNECTED? TRUE OR FALSE
Statement 1
• A mobile charger is left plugged in when the phone has finished charging
Statement 2
• Leaving my charger plugged in doesn’t waste energy
The Climate Cops quiz
The Climate Cops quiz: Answers
Climate Cops: Question 1 TRUE
Climate Cops: Question 2 TRUE
Climate Cops: Question 3 FALSE
Climate Cops: Question 4 TRUE
Climate Cops: Question 5 FALSE
Climate Cops: Question 6 TRUE
Climate Cops: Question 7 FALSE
Climate Cops: Question 8 TRUE
Climate Cops: Question 9 TRUE
Climate Cops: Question 10 FALSE
The Climate Cops quiz:Whiteboard activity
Statement 1 Statement 2 Tick if true
The light is left on when there is no one in the room.
This wastes lots of electricity.
We have three energy saving light bulbs in our home.
If every house fitted 3 energy saving light bulbs, it would save enough energy to run the country’s street lights for a year.
The TV is left on standby. Appliances on standby don’t use energy.
Hot food is put in the fridge or freezer.
More energy will have to be used to cool the food down.
Boiling a full kettle of water to make one cup of tea.
Energy and water are not being wasted.
Statement 1 Statement 2 Tick if true
We have a dripping hot water tap in our kitchen.
It wastes energy and in one week wastes enough water to fill half a bath.
A house with dirty windows. It would make no difference if the windows were clean.
Heat can escape through walls, windows, the roof, floors, doors and draughts.
Insulating your home will stop the heat from escaping.
We have an energy saving fridge.
Energy saving appliances cost less to run and help reduce climate change.
A mobile phone charger is left plugged in when the phone has finished charging.
Leaving my charger plugged in doesn’t waste energy.
The Climate Cops quiz:Whiteboard activity
Climate Cops discussion
So, what have you learnt from this?
Activity 3:
The Earth Needs You
Climate Cops discussion
The most environmentally friendly energy is the energy we don’t use.
Why do you think it’s important that we try not to waste electricity, energy and water?
The reasons to SAVE energy
1. To SAVE the environment
2. To SAVE the Earth’s non-renewable sources
3. To SAVE money
1. To SAVE the environment
Image by: Thomas Picard, PocketAces Image by: Hafsah Al-AzemImage by: Selma Dredge
Did you know…
When we go about our daily lives, using cars and planes and heating our homes, all these activities release a gas called carbon dioxide. Carbon dioxide pollutes our atmosphere.
Carbon dioxide is produced by power stations that generate electricity.
Carbon dioxide speeds up the climate change process.
See how climate change works
See how climate change works
See how climate change works
See how climate change works
See how climate change works
See how climate change works
Negative effects of climate change
• If the heat cannot escape, the Earth will warm up too much.
• This is called global warming or the greenhouse effect.
Negative effects of climate change
Ice caps will melt
Image by: Thomas Picard, PocketAces
Image by: Hafsah Al-Azem
DroughtsWe are already seeing
more droughts in many
countries.
Negative effects of climate change
Image by: Selma Dredge
FloodingThere is heavy rain and
winds causing damage in
others.
Negative effects of climate change
2. To SAVE the Earth’s non-renewable sources
Did you know…
• Most of the UK’s electricity is produced by burning fossil fuels like coal, oil and gas
• These will eventually run out
3. To SAVE money
Image by: Ajay Singh
Did you know…
Together, we could save millions of £££’s on our electricity and gas bills if we didn’t waste energy.
‘Energy wasting’ cards
Working in groups, see if you can guess all the activities that waste energy.
Use drama, charades or any other ways you can think of to get the class to guess the energy wasting activity on your card!
Can you remember all the energy wasting activities?
• (Space to write all the correctly guessed activities, plus any additional suggestions)
Activity 4:
Energy Questionnaire
How do you use energy at home?
• Fill in the Energy Questionnaire
• Then in your groups, discuss your answers. What should you do and why?
Our class response
Double-click on the bar chart to insert your class data.
0
5
10
15
20
25
30
35
40
Q. 1 Q. 2 Q. 3 Q. 4 Q. 5 Q. 6
Yes
No
Sometimes
Climate Cops discussion
So, how could the class be more energy efficient?
Activity 5:
Investigation ‘Light Bulb’
Did you remember that…
• POWER: measures the amount of electrical power an appliance uses in watts (W) or kilowatts (kW)
• ENERGY: is the amount of electrical energy that is used
Climate Cops discussion
Do you think a light bulb uses much power?
Do you think it uses much energy?
Investigation ‘light bulb’
• Ordinary light bulbs use less power compared to many other things that use electricity
• Energy saving light bulbs use even less than ordinary light bulbs
• But we have lots of lights in our homes and school
• We also use lights for long periods of time
Investigation ‘light bulb’ homework
Your mission:To see how much energy your lights are using in your home.
To see how much energy could be saved if energy saving light bulbs were used.
Investigation ‘light bulb’ – Follow-up
If all the bulbs in your house were energy saving light bulbs, how much energy would be saved every day?
Did you know…
• If everyone fitted just one energy saving light bulb, the carbon dioxide emissions saved would fill more than 1 million double decker buses
• If each house fitted three energy saving light bulbs, it would save enough energy to run the country’s street lights for a year
Source: www.energysavingtrust.org.uk
Activity 6:
What’s on the Meter?
Quick question…
What is an electricity meter?
Answer…
Every house has an electricity meter.
It records the amount of electricity used within our home.
What’s on the meter?
Your mission:By following the top tips on ‘The Earth Needs You’ poster, can you reduce the amount of electricity you use?
What’s on the meter? Homework follow-up
• When was the most electricity used? Was it in Week 1 or Week 2?
• What could be the reasons for this?
• When do you think the most electricity is used and why?
- At school
- At home
• Do you think any energy was wasted during the week?
• How could you have been more energy efficient?
Activity 7:
Be a Climate Cop
The Climate Cops team need your help to find ways to save energy and help the planet.
Use your skills of investigation to help cut down on the energy wasting activities that could be taking place in your school.
Do you want to be a Climate Cop?
What did you find in school?
• (Space to capture what the children found)
How can we fix the problems?
• (Space to capture the children’s suggestions)
Now it’s time to use your skills of investigation in your home too.
What about at home?
What did you find at home?Homework follow-up
• (Space to capture what the children found)
• (Space to capture the children’s suggestions)
How can we fix the problems?Homework follow-up
Now develop one of the following:
• A letter for the Headteacher about how the school can be more energy efficient
• A letter for your parents about how you can all be more energy efficient at home
• An energy saving policy for the school and your home
Climate Cop training: Follow-up
Activity 8:
Spread the word
Spread the word
• Now that you understand the importance of using energy wisely, it’s time to tell others too.
• Develop one of the following:
- A suite of posters to remind everyone at home or at school of the different
ways to be energy efficient
- A leaflet that communicates the top tips on energy efficiency and the reason’s
why it’s important
- An article for a local community newsletter that encourages people to take ‘local action, for global effect’
Activity 9:
Call Energy Efficient House!Bingo Game
Let’s play
• Your bingo card holds lots of energy wasting activities
• Cross off the energy wasting activities
• You have to cross out a complete row of four
• Then call ‘Energy Efficient House’ to win!
Good Luck!