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Brecon High School

Year 10 Blended Learning

Half Term 2

Pre-study/

Preview Activities

Duration

Post-study/

Consolidation Activities

Duration

Core subjects (Two tasks per half term for English, Maths and Welsh).

Three tasks per half term for Science (with Triple Science extending the task duration).

Up to

10 minutes per task

Core subjects (Two tasks per half term for English, Maths and Welsh).

Three tasks per half term for Science (with Triple Science extending the task duration).

Up to

1 hour per task

Non-core subjects

(One task per half term).

Up to

10 minutes per task

Non-core subjects

(One task per half term).

Up to

1 hour per task

Blended Learning is a style of education in which students learn via electronic and online media as well as traditional face-to-face teaching. Learners can, in part, control the time, pace, and place of their learning.

Combining international research, learning from collaborative partnerships with organisations such as Impact Wales, as well as a range of internal review and feedback from parents and teaching staff, Brecon High School has developed a Blended Learning Policy in response to the Covid-19 pandemic and will use this as an opportunity to:

· Explore meaningful and interesting ways to deliver consistently good pedagogy using a range of strategies and technologies

· Focus upon the concept of creating pupils that are ‘Learning Fit’, being able to develop resilience in order to adjust to new learning scenarios at short notice and apply their skills to these changeable situations

· Ensure that pupils come to school prepared to learn by completing pre-learning tasks and then solidify this learning through consolidatory activities

· Provide on-line tutoring support to all pupils to ensure that the link between home and school remains consistently strong

· Ensure that pupils efforts and the quality of their work is rewarded via the use of Class Charts and that parents/carers are kept informed about pupil progress as often as possible

Blended Learning (pre-study and post-study tasks) will be our alternative to traditional homework, regardless of how soon our world returns to normality.

Year 10 English - Half Term 2

Pre-study/Preview activities:

Tick when complete ✔️

Activity

Task 1: What do you know about video gaming?

A. Create a mind map of your knowledge, experience and feelings about gaming.

B. List any vocabulary you associate with gaming.

Task 2: https://www.bbc.co.uk/newsround/53740172 Read the Newsround article and watch the accompanying video. Summarise the information into a short paragraph containing 5 key points.

Post-study/Consolidation activities:


Activity

Task 1: Complete Section A – the Reading section of the Unit 3 specimen exam paper on Video Games

Task 2: Complete Section B – the Writing section of the Unit 3 specimen exam paper on Video Games

Resources

All resources and worksheets uploaded to Class Charts

Contact

Email - AoLE Lead for LLC - Mr Alex Griffith

[email protected]

Year 10 Maths - Half Term 2



Activity

Task 1 - MathsWatch task - Watch the video clip(s) and answer the questions set by your teacher.

Task 2 - MathsWatch task - Watch the video clip(s) and answer the questions set by your teacher.



Activity

Task 1 - Pupils to complete Homework task 2.

Task 2 – Revise all topics covered this half term ready for your assessment.

Resources


Contact

Email - AoLE Lead for Maths and Numeracy - Mrs Leanne Vinnicombe

[email protected]

Year 10 Science - Half Term 2



Activity

Biology: write the word equations for-

Aerobic respiration

Anaerobic respiration

Chemistry:

If you were an element – what element would you be and why? E.g. - Krypton – because I like my own company, Caesium because I react easily under certain conditions or Neon because I have a glowing personality. (You can’t use any of these though. Upload answer to ClassCharts in the homework area.

Physics: Topic #4 – Domestic electricity BL - booklet

Refer to the domestic electricity booklet – On page 2 there is the pre-learning task on the intended energy output of some domestic devices. Please complete this.



Activity

Biology: Find the best “Youtube” clip (song or video) that can be used for revision of ‘Respiration and the Respiratory System’. Upload the link to Class Charts

Chemistry:

Watch the attached video and then submit 10 facts which you have learnt throughout the video.

https://www.bbc.co.uk/iplayer/episode/b00qck1t/chemistry-a-volatile-history-2-the-order-of-the-elements

Physics: Topic#4 – Domestic electricity BL - booklet

Refer to the domestic electricity booklet – On page 7 there is the consolidation task on the electricity meter readings. This is then followed by 1 exam question for Foundation and 2 for Higher. Please complete this work.

Resources


Physics resources:

Contact

Email - AoLE Lead for Science and Technology - Mrs Nerys Pease

[email protected]

Year 10 Welsh - Half Term 2



Activity

Task 1:

Task 2:



Activity

Task 1:

Task 2:

Resources


Contact

Email - AoLE Lead for Welsh - Mrs Helen Davies

[email protected]

Year 10 Cymraeg - Half Term 2



Activity

Tasg 1 - Ymchwiliwch ar gyfer eich Cyflwyniad Unigol Uned 1 Tasg 1

Tasg 2 – Darllenwch Deunyddiau Darllen Uned 2



Activity

Tasg 1 - Paratowch nodiadau addas er mwyn i chi gwblhau Cyflwyniad Unigol Uned 1 Tasg 1

Tasg 2 - Ymatebwch cwestiynau arholiad Uned 2

Resources


Contact

Email - AoLE Lead for Welsh - Mrs Helen Davies

[email protected]

Year 10 Geography - Half Term 2

Pre-study/Preview activities: Internet Research


Activity

Use Google to search and locate a photograph of a meander.

Copy and paste it into a Word document.

Label the following features: Inside bend; outside bend; fast flow; slow flow; deep water; shallow water; slip off slope; river cliff

Upload to Class Charts

Post-study/Consolidation activities: Past Paper Question


Activity

Complete past paper question on Flood Hydrographs. Upload to Class Charts.

Resources


Contact

Email - AoLE Lead for Humanities - Mrs Rebecca Carpenter

[email protected]

Year 10 History - Half Term 2



Activity

https://www.bbc.co.uk/bitesize/guides/z3jhw6f/revision/1

Visit BBC bitesize via the above link. Read the information on the coming of war and complete test. Please upload a screenshot of your results to class charts.



Activity

Complete exam question on the significance of air raid wardens and air raid shelters during the war.

Resources


Contact


[email protected]

Year 10 Drama - Half Term 2



Activity

Continue researching around the chosen theme of your Devised piece



Activity

Produce a WORKING SCRIPT for your Devised piece that includes dialogue and all stage/sound and lighting directions.

This needs to be typed up and printed off for use in all your Drama lessons.

Resources


Contact

Email - AoLE Lead for Expressive Arts - Mrs Helen East

[email protected]

Year 10 Art - Half Term 2



Activity

Pre task - See ClassCharts for full instructions.

Discuss the work inspired by Ben Heine.



Activity

Post task- See ClassCharts for full instructions, PowerPoint and question sheet.

Answer the questions set about your work inspired by Ben Heine.

Dirt time to improve the practical work inspired by Ben Heine. See feedback left on ClassCharts.

Resources


Contact


[email protected]

Year 10 Music - Half Term 2



Activity

Pre task - See ClassCharts for full instructions.



Activity

Post task - See ClassCharts for full instructions.

Resources


Contact


[email protected]

Year 10 PE - Half Term 2



Activity

Watch Methods of Training video on GCSE pod.

https://members.gcsepod.com/login



Activity

Select a health related or skill related component of fitness to improve. Plan a circuit training session that is sports specific. Apply FITT and the principles of training to your plan to make sure overload takes place. Upload your circuit plan with detail explanation of sets and repetitions to Class Charts.

Resources


Contact

Email - AoLE Lead for PE and Sport - Mrs Anna Stephens

[email protected]

Year 10 French - Half Term 2



Activity

Watch this video clip. How many facts can you pick about Celtina? Can you pick up 2/3 more facts from listening a second time?

https://youtu.be/ioFafRXy0RM



Activity

Half Term Focus: Listening Skills

Work through the 3 exercises on self and family in the AQA GCSE listening booklet. Open the document digitally and click on

Go to Dropbox to access the soundfiles.

Please select the folder “Me, my family and friends” and then select the individual folder per question.

Correct your answers and submit your marks to Miss Daniels, via Classcharts. Take photographic evidence of your booklet.

Resources


Contact

Email - AoLE 2nd for LLC - Mrs Jo Daniels

[email protected]

Year 10 Computer Science - Half Term 2



Activity

Revise for test on “Chapter 2 – Logical Operations”.



Activity

DIRT respond to the items identified from your test. You should green pen the answers that you got wrong, and also create a revision resource to help improve your knowledge of the areas you were weakest in.

Resources

All resources and worksheets uploaded to VLE

Contact


[email protected]

Year 10 Design Technology - Half Term 2



Activity

Collect images/ photographs of the design style/ theme that you are aiming to use in your use in your design work. Place them on one document and upload to Classcharts. Bring a hard copy to school so that it can be mounted in your sketchbook and used when sketching.



Activity

Complete at least 4 different Initial Design idea sketches which are appropriately labelled considering

· Potential materials

· Measurements in mm

· Colour options and finishes

· How the ideas link back to the theme

Evaluate the designs and how they are suitable / unsuitable. Consider all of the ACCESS FM considerations.

Then suggest the best idea to proceed with making a model.

Upload to class charts initially for feedback but they will need to be added to your portfolio as well which is submitted on Teams.

Resources


Contact


[email protected]

Year 10 Food - Half Term 2



Activity



Activity 1

Resources


Contact

Email - WBQ Lead - Ms Cath Huggins

[email protected]

Year 10 PSE - Half Term 2



Activity



Activity

Resources


Contact

Email - AoLE Lead for Health and Wellbeing - Mr Andrew Morgan

amorgan@[email protected]

Year 10 - Health and Social - Half Term 2



Activity



Activity

Resources


Contact

Email

Year 10 Business - Half Term 2



Activity

State what is meant by ‘furlough’. Explain why the government has introduced a furlough scheme



Activity

Watch an episode of Dragons Den and create a glossary (terms and definitions) of the business terms used.

Resources


Contact


[email protected]

Year 10 Creative and Media - Half Term 2



Activity

Ensure that your portfolio of evidence created to ‘promote Brecon’ has images, and attempts with descriptions of your strengths and weaknesses in.



Activity

Make improvements on the portfolio, taking into account the comments from your peers. Evaluate your performance throughout the creation of your portfolio

Resources

All resources and worksheets uploaded to VLE

Contact


[email protected]

BLANK TEMPLATE FOR ADDITIONAL SUBJECTS TO COPY AND PASTE

Year 10 - Half Term 2



Activity



Activity

Resources


Contact

Email

Domestic Electricity BL(H)

GCSE - Physics Yr 10

Name_________________________________

Form _________

Set___________

What do you know about this topic?

Measuring electricity usage

Aims and objectives- Demonstrate and apply your knowledge and understanding of:

(i) the kilowatt (kW) as a convenient unit of power in the domestic context and the kilowatt hour (kWh) as a unit of energy

(ii) (b) the cost of electricity using the equations:

units used (kWh) = power (kW) × time (h)

cost = units used × cost per unit

Pre-learning

Most households have a lot of different electrical appliances - each of which has a different purpose...

What is the intended energy output for each of these household electrical devices?

Some might have more than one.

1. ……………………………...

2. ………………………………

3. ………………………………

4. ………………………………

5. ………………………………

6. ………………………………

7. ………………………………

8. ………………………………

Electrical energy

In unit 1.1 Electrical circuits, you learned that Energy = Power x Time, where energy is measured in Joules, power is measured in Watts and time in seconds.

The Joule is a very small unit of energy. We often get answers of thousands of joules when answering questions and so using kJ instead of the J can be useful as it means we are dealing with less numbers.

When looking at measuring electrical energy (or electricity) used, even a kilojoule (1000J) seems inappropriate as a simple light bulb uses 72kJ in just 30 minutes.

If we used the Joule as the base unit for paying for all the electricity used at home we would have bills requesting payment for thousands of millions of Joules each month.

A new unit is required for large quantities of electrical energy.

This is the kilowatt hour or ‘kWh’. We refer to this as a measure of ‘units used’

1 kWh is the electrical energy converted by a 1 kW appliance used for 1 hour.

In terms of joules this is: 1kWh = 1000 x 60 x 60 = 3,600,000J

Even in ‘kWh’ some users can use over a thousand units or ‘kWh’s of electricity each month.

Answer the following questions, use your other booklets or equation sheet to find any formulae needed.

kWh → J, ×(1000×60×60)(or ×3600000) J → kWh, ÷(1000×60×60) (or÷3600000)

Changing units – Practice (Remember 1kWh = 1000 x 60 x 60 = 3,600,000J)

1 hour in seconds ___________________3600

7200 seconds in hours _______________2 hours

An hour and a fifteen minutes in hours (take care) ________________ 1.25

Three hundred minutes in seconds____________18000 and hours _______________5

Three quarters of an hour in seconds___________2700 and hours______________0.75

3500W in kW___________________3.5

0.29 kW in W__________________290

2x108 W in kW________________200000

3MW in W_______________3000000

682mW in W_____________0.682

260J in kWh_____________0.000072 (look back at page 2)

25kWh in J______________90000000 (look back at page 2)

3.3MJ in kWh_____________0.916

5612p in £______________56.12

£98.27 in p_____________9827

One year in- Days_______,365 Hours________,8760 Seconds_______31536000

The Electricity Meter

An electricity meter measures the amount of electricity used in units called kilowatt-hours (kWh) or units.

(Remember: A kilowatt-hour is the amount of energy used by a 1 kilowatt appliance in 1 hour.)

The formula to calculate Energy used in kWh is:-

(Notice the change to units of power and time)

Units used (kWh) = Power (kW) x Time (hours)

Fill in the triangle for this formula, you could use UU for energy used or units used if you like. It might be worth putting (kW) under power and (h) under time to remind you of the units as these are not commonly used in equations. If you are planning on sitting the foundation tier paper then you can ask your teacher for help with this.

A modern meter is electronic and many people find them easier to read than the traditional meters.

Modern electronic meters still use the kilowatt-hour as the basic unit of chargeable electricity.

Calculating the cost of electricity

After calculating the amount of units used, the next step is to calculate the cost of this electricity. We have the equation.

Cost = number of units used x cost per unit

)

You can put the cost into the equation in pounds or pence but will get your answer in the same unit.

Example

Calculate the cost of the electricity used when a 2kW heater is switched on maximum for 90 minutes, if electricity costs 10p per unit (kWh).

90 minutes = 1.5 hours.

Units used = power (kW) x Time (h)

= 2 x 1.5 = 3 kWh

Cost = UU x CPU = 3 x 10p = 30p.

Questions

1.The Cost of Cooking a Meal

Calculate the cost of the electricity used when a hob uses an average of 0.25kW for 3 hours.

Cost per unit of electricity = 10p.

2.The Cost of Making Toast

A toaster has a power rating of 1.5kW.

If the toaster is used for 5 minutes every day,and the electricity cost per unit = 11p, then how much would it cost per week to make toast if it used Monday to Saturday (6 days)?

3.The cost of drying your hair - how much more expensive is it to dry long hair than short hair?

Two hairdryers each have a power rating of 1kW.

Short hair takes about 6 minutes to dry while long hair can take anything up to 20 minutes. Calculate the difference in cost between drying long and short hair. Cost per unit = 12p

Short hair

Long Hair

Difference in cost = …………………………………….

4.Traditional Light Bulbs v Low Energy Light Bulbs

A typical traditional light bulb has a power rating of 60W or 0.06kW,

The equivalent saver bulb produces the same amount of light but has a power rating of 11W or 0.011kW

Assuming the lights are left on for 3 hours per day, for a whole year, approximately 1100 hours, calculate the saving made by using a low energy bulb compared to a traditional light bulb. Electricity costs 10p per unit.

Understanding an Electricity Bill

The total cost of electricity used by any household depends on three things:

· How many electrical appliances are being used

· How long each appliance is used for

· The power rating of each individual appliance.

When calculating a household electricity bill, the first step is to use the meter to find the number of units of electricity used...

For each of the following meters, calculate the number of units of electricity used.

Meter 1

Meter 2

Meter 3

Meter 4

Previous Reading

28501

13876

17173

22544

Current Reading

29572

14549

17968

23697

Units Used

1071

673

795

1153

Having found the number of units of electricity used, we multiply this number by the cost per unit.

In addition, the electricity company adds a standing charge per day just because you are connected to them.

This pays for the up-keep of the equipment necessary to supply the electricity.

Consolidation task

Your electricity bill

Read all headings carefully, and fill in the missing numbers

1.

Previous reading

Current reading

Electricity used

Cost per unit

Total cost (£)

63264

64344

1080

2.5p

27

2.

Previous reading

Current reading

Electricity used

Cost per unit

Total cost (£)

21350

23070

1720

6.5p

111.8

3.

Reading last time

Reading this time

Electricity used

Cost per unit

Total cost (£)

12224

13423

1199

9p

107.91

4.

Current reading

Previous reading

Electricity used

Cost per unit

Total cost (£)

4424

3658

766

12p

91.92

5.

Current reading

Previous reading

Electricity used

Cost per unit

Cost (£)

1130

851

279

For first 202 kWh at 12p per kWh

24.24

For other at 6p per kWh

4.62

Total cost:

6.

Previous

Latest

Electricity used

Unit charges

Total (£)

32897

33427

530

First 227 at 13.25p

30.08

Next 303 at 7.88p

23.89

Total for this period

56.67

4

4

5

·

2

kWh

4

6

3

·

9

kWh

7. A kettle is connected to an energy meter that measures units used in kWh to 1 decimal place. The energy meter is not reset to zero at the start.

Start meter reading

Meter reading after 1 week

(a) What does the abbreviation kWh stand for? ........................................................ [1]

(b) (i) Calculate the number of units used by the kettle during the week. [1]

units used = ................................... kWh

(ii) During the week the kettle is used for a total of 8.5 hours.

Use the equation:

power (kW) = units used (kWh) time (h)

to calculate the power of the kettle in watts. [3]

............................................. W

(iii) Each unit (kWh) of electricity costs 20 p. Use an equation from page 2 to calculate the cost in pounds of using the kettle for the week. [2]

£ .............................................

(c) A smaller kettle for use in a caravan has a power rating that is a quarter (1/4) of the original kettle, but it had taken double the amount of time to boil. How much would it cost to use this kettle instead? [2]

cost = _______________

(d) The European Union is considering banning high powered kettles. Explain whether banning high powered kettles will help reduce our energy use. (It takes 0.1 kWh to boil 1 kg of water.) [2]

LED

CFL

Power (W)

6

14

kWh of electricity used over 50 000 hours

300

A ............................

Cost of using electricity

£36

B ............................

Price per bulb

£23

£2.50

Bulbs needed for 50 000 hours of use

1

5

Cost of bulbs over 50 000 hours

£23

............................

Total cost for 50 000 hours

£59

............................

8. Compact fluorescent lamps (CFL), with a life of 10 000 hours, have replaced filament light bulbs. Light-emitting diodes (LED), with a life of 50 000 hours, are being developed. Information about both types of lights is given in the table below.

(i) The cost of electricity is 12 p / kWh.

Use the equations:



to complete boxes A and B in the table. [3]

(ii) Complete the table to show that the total cost of buying and using five CFLs is more than buying and using one LED. [2]

(iii) Both types of light are equivalent to a 60 W filament light bulb. Use the information in the table to explain why the LED is more than twice as efficient as a CFL. [3]

27

Domestic

Electricity_BL_F.docx

Domestic Electricity BL(F)

GCSE - Physics Yr 10

Name_________________________________

Form _________

Set___________

What do you know about this topic?

Measuring electricity usage

Aims and objectives- Demonstrate and apply your knowledge and understanding of:

(i) the kilowatt (kW) as a convenient unit of power in the domestic context and the kilowatt hour (kWh) as a unit of energy

(ii) (b) the cost of electricity using the equations:



Pre-learning

Most households have a lot of different electrical appliances - each of which has a different purpose...

What is the intended energy output for each of these household electrical devices?

Some might have more than one.

1. ……………………………...

2. ………………………………

3. ………………………………

4. ………………………………

5. ………………………………

6. ………………………………

7. ………………………………

8. ………………………………

Electrical energy

In unit 1.1 Electrical circuits, you learned that Energy = Power x Time, where energy is measured in Joules, power is measured in Watts and time in seconds.

The Joule is a very small unit of energy. We often get answers of thousands of joules when answering questions and so using kJ instead of the J can be useful as it means we are dealing with less numbers.

When looking at measuring electrical energy (or electricity) used, even a kilojoule (1000J) seems inappropriate as a simple light bulb uses 72kJ in just 30 minutes.

If we used the Joule as the base unit for paying for all the electricity used at home we would have bills requesting payment for thousands of millions of Joules each month.

A new unit is required for large quantities of electrical energy.

This is the kilowatt hour or ‘kWh’. We refer to this as a measure of ‘units used’

1 kWh is the electrical energy converted by a 1 kW appliance used for 1 hour.

In terms of joules this is: 1kWh = 1000 x 60 x 60 = 3,600,000J

Even in ‘kWh’ some users can use over a thousand units or ‘kWh’s of electricity each month.

Answer the following questions, use your other booklets or equation sheet to find any formulae needed.

kWh → J, ×(1000×60×60)(or ×3600000) J → kWh, ÷(1000×60×60) (or÷3600000)

Changing units – Practice (Remember 1kWh = 1000 x 60 x 60 = 3,600,000J)

1 hour in seconds ___________________3600

7200 seconds in hours _______________2 hours

An hour and a fifteen minutes in hours (take care) ________________ 1.25

Three hundred minutes in seconds____________

Three quarters of an hour in hours______________0.75

3500W in kW___________________3.5

0.29 kW in W__________________290

3MW in W_______________3000000

5612p in £______________56.12

£98.27 in p_____________9827

One year in- Days_______,365 Hours________60

The Electricity Meter

An electricity meter measures the amount of electricity used in units called kilowatt-hours (kWh) or units.

(Remember: A kilowatt-hour is the amount of energy used by a 1 kilowatt appliance in 1 hour.)

The formula to calculate Energy used in kWh is:-

(Notice the change to units of power and time)

Units used (kWh) = Power (kW) x Time (hours)

Fill in the triangle for this formula, you could use UU for energy used or units used if you like. It might be worth putting (kW) under power and (h) under time to remind you of the units as these are not commonly used in equations. If you are planning on sitting the foundation tier paper then you can ask your teacher for help with this.

A modern meter is electronic and many people find them easier to read than the traditional meters.

Modern electronic meters still use the kilowatt-hour as the basic unit of chargeable electricity.

Calculating the cost of electricity

After calculating the amount of units used, the next step is to calculate the cost of this electricity. We have the equation.

Cost = number of units used x cost per unit

)

You can put the cost into the equation in pounds or pence but will get your answer in the same unit.

Example

Calculate the cost of the electricity used when a 2kW heater is switched on maximum for 90 minutes, if electricity costs 10p per unit (kWh).

90 minutes = 1.5 hours.

Units used = power (kW) x Time (h)

= 2 x 1.5 = 3 kWh

Cost = UU x CPU = 3 x 10p = 30p.

Questions

1.The Cost of Cooking a Meal

Calculate the cost of the electricity used when a hob uses an average of 0.25kW for 3 hours.

Cost per unit of electricity = 10p.

2.The Cost of Making Toast

A toaster has a power rating of 1.5kW.

If the toaster is used for 5 minutes every day,and the electricity cost per unit = 11p, then how much would it cost per week to make toast if it used Monday to Saturday (6 days)?

3.The cost of drying your hair - how much more expensive is it to dry long hair than short hair?

Two hairdryers each have a power rating of 1kW.

Short hair takes about 6 minutes to dry while long hair can take anything up to 20 minutes. Calculate the difference in cost between drying long and short hair. Cost per unit = 12p

Short hair

Long Hair

Difference in cost = …………………………………….

4.Traditional Light Bulbs v Low Energy Light Bulbs

A typical traditional light bulb has a power rating of 60W or 0.06kW,

The equivalent saver bulb produces the same amount of light but has a power rating of 11W or 0.011kW

Assuming the lights are left on for 3 hours per day, for a whole year, approximately 1100 hours, calculate the saving made by using a low energy bulb compared to a traditional light bulb. Electricity costs 10p per unit.

Understanding an Electricity Bill

The total cost of electricity used by any household depends on three things:

· How many electrical appliances are being used

· How long each appliance is used for

· The power rating of each individual appliance.

When calculating a household electricity bill, the first step is to use the meter to find the number of units of electricity used...

For each of the following meters, calculate the number of units of electricity used.

Meter 1

Meter 2

Meter 3

Meter 4

Previous Reading

28501

13876

17173

22544

Current Reading

29572

14549

17968

23697

Units Used

1071

673

795

1153

Having found the number of units of electricity used, we multiply this number by the cost per unit.

In addition, the electricity company adds a standing charge per day just because you are connected to them.

This pays for the up-keep of the equipment necessary to supply the electricity.

Consolidation task

Your electricity bill

Read all headings carefully, and fill in the missing numbers

1.

Previous reading

Current reading

Electricity used

Cost per unit

Total cost (£)

63264

64344

1080

2.5p

27

2.

Previous reading

Current reading

Electricity used

Cost per unit

Total cost (£)

21350

23070

1720

6.5p

111.8

3.

Reading last time

Reading this time

Electricity used

Cost per unit

Total cost (£)

12224

13423

1199

9p

107.91

4.

Current reading

Previous reading

Electricity used

Cost per unit

Total cost (£)

4424

3658

766

12p

91.92

5.

Current reading

Previous reading

Electricity used

Cost per unit

Cost (£)

1130

851

279

For first 202 kWh at 12p per kWh

24.24

For other at 6p per kWh

4.62

Total cost:

6.

Previous

Latest

Electricity used

Unit charges

Total (£)

32897

33427

530

First 227 at 13.25p

30.08

Next 303 at 7.88p

23.89

Total for this period

56.67

4

4

5

·

2

kWh

4

6

3

·

9

kWh

7. A kettle is connected to an energy meter that measures units used in kWh to 1 decimal place. The energy meter is not reset to zero at the start.

Start meter reading

Meter reading after 1 week

(a) What does the abbreviation kWh stand for? ........................................................ [1]

(b) (i) Calculate the number of units used by the kettle during the week. [1]

units used = ................................... kWh

(ii) During the week the kettle is used for a total of 8.5 hours.

Use the equation:

power (kW) = units used (kWh) time (h)

to calculate the power of the kettle in watts. [3]

............................................. W

(iii) Each unit (kWh) of electricity costs 20 p. Use an equation from page 2 to calculate the cost in pounds of using the kettle for the week. [2]

£ .............................................

(c) A smaller kettle for use in a caravan has a power rating that is a quarter (1/4) of the original kettle, but it has taken double the amount of time to boil. How much would it cost to use this kettle instead? [2]

cost = _______________

(d) The European Union is considering banning high powered kettles. Explain whether banning high powered kettles will help reduce our energy use. (It takes 0.1 kWh to boil 1 kg of water.) [2]

27

Domestic

Electricity_BL_H.docx

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