Energy in the home

This lesson explains how to convert between different time units, rearrange the power equation and then apply this to real life examples by calculating domestic energy costs.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Complete this definition: power is the _______ at which energy is transferred

1/10

Q2.What is the standard unit for power?

2/10

Q3.Power = _________ ÷ time

3/10

Q4.A fan is turned on a starts to spin fast - what is the useful energy store that increases?

4/10

Q5.Which fan would you expect to spin fastest?

5/10

Q6.Complete the gap: a light bulb with a higher power rating will transfer energy at a _________ rate than a light bulb with a lower power rating

6/10

Q7.1 kW = 1000 W. What is 6.5 kW in W?

7/10

Q8.Calculate the power for a bulb that transfers 100 J every 20 s

8/10

Q9.Calculate the power for a bulb that transfers 2 kJ every 10 s

9/10

Q10.Which of these is an example of an insulator?

10/10

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Complete this definition: power is the _______ at which energy is transferred

1/10

Q2.What is the standard unit for power?

2/10

Q3.Power = _________ ÷ time

3/10

Q4.A fan is turned on a starts to spin fast - what is the useful energy store that increases?

4/10

Q5.Which fan would you expect to spin fastest?

5/10

Q6.Complete the gap: a light bulb with a higher power rating will transfer energy at a _________ rate than a light bulb with a lower power rating

6/10

Q7.1 kW = 1000 W. What is 6.5 kW in W?

7/10

Q8.Calculate the power for a bulb that transfers 100 J every 20 s

8/10

Q9.Calculate the power for a bulb that transfers 2 kJ every 10 s

9/10

Q10.Which of these is an example of an insulator?

10/10

Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

  • Click "Close Video"
  • Click "Next" to view the activity

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Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Energy and Power

This quiz will have questions from the lesson called 'Energy and Power' and previous lessons in the Energy topic. Please complete this quiz to consolidate your learning.

Q1.Complete this definition: power is the rate at which _______ is transferred

1/10

Q2.What is the standard unit for time?

2/10

Q3.Energy = ________ x time

3/10

Q4.What symbol goes in the gap between energy and power in this equation? time = energy __?__ power

4/10

Q5.What is 3 hours in seconds?

5/10

Q6.Which of these equations is incorrect?

6/10

Q7.A 10 W oven transfers 60 J of energy. How long is the oven on for?

7/10

Q8.A 24 W lamp is turned on for 8 seconds, how much energy is transferred by the lamp?

8/10

Q9.Complete the equation: cost = _____________ x price per unit

9/10

Q10.A 5 kW oven is turned on for 6 h. Price per unit is 10 p, how much will this cost?

10/10

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Energy and Power

This quiz will have questions from the lesson called 'Energy and Power' and previous lessons in the Energy topic. Please complete this quiz to consolidate your learning.

Q1.Complete this definition: power is the rate at which _______ is transferred

1/10

Q2.What is the standard unit for time?

2/10

Q3.Energy = ________ x time

3/10

Q4.What symbol goes in the gap between energy and power in this equation? time = energy __?__ power

4/10

Q5.What is 3 hours in seconds?

5/10

Q6.Which of these equations is incorrect?

6/10

Q7.A 10 W oven transfers 60 J of energy. How long is the oven on for?

7/10

Q8.A 24 W lamp is turned on for 8 seconds, how much energy is transferred by the lamp?

8/10

Q9.Complete the equation: cost = _____________ x price per unit

9/10

Q10.A 5 kW oven is turned on for 6 h. Price per unit is 10 p, how much will this cost?

10/10

Lesson summary: Energy in the home

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Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Climb stairs

On the spot:
Chair yoga

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