End of chapter quiz
Chapter P2: Sustainable energy
Instructions and answers for teachers
These instructions cover the learner activity section which can be found on page 19. This end of
chapter quiz supports OCR GCSE (9-1) Physics B (J259), Chapter P2.
When distributing the activity section to the learners either as a printed copy or as a Word
file you will need to remove the teacher instructions section.
The Activity
This lesson element is a teaching and learning resource comprised of 40 marks covering a range
of question types. The quiz starts with some multiple choice questions (MCQs) and them moves on
to some short answer questions and then finally on to some longer answer questions.
This resource can be used to test and consolidate understanding at the end of teaching the
chapter or to revisit and refresh knowledge at a later point in the course.
Learning Outcomes
This lesson element relates to the specification learning outcomes in Chapter P2: Sustainable
energy. The questions in this quiz cover a range of the following topics:
P2.1 How much energy do we use?
P2.2 How can electricity be generated?
.
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Chapter: P2 of J259
Total marks: 40
1.
A mobile phone is rated at 2 W when it is being used. It is used for 5 minutes. How many
Joules of energy does it use?
A
10 J
B
2.5 J
C
1000 J
D
600 J
[1]
Your answer
D
Mark scheme:
Question
1
Answer
Marks
D – 600 J
1
Guidance
2 J/s x 60s x 5min
=600 J
1
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2.
Some power stations use oil as their primary energy source. What type of energy is stored
in oil?
A
Thermal
B
Kinetic
C
Chemical
D
Light
[1]
Your answer
C
Mark scheme:
Question
2
Answer
Marks
C – Chemical
Guidance
1
1
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3.
David and Sarah are trying to work out whether it is more expensive to use a laptop or a
games console. They both use the same electricity supplier which charges 12p per kWh.
David uses his games console 2 ½ hours a day, 6 days a week. The combined power rating
of the games console and LED TV is 150W.Sarah uses her laptop 3.5 hours a day, 5 days
a week. The laptop has a power rating of 120WThe greenhouse effect is causing climate
change. Scientists aim to reduce the greenhouse effect by reducing the use of fossil fuels.
(a)
How many hours does Sarah use her laptop for in one week?
[1]
(b)
How many hours does David use his games console for in one
week?
[1]
c)
How many kWh does Sarah’s laptop use in 1 week?
[1]
d)
How many kWh does David’s console and TV use in 1 week?
[1]
e)
Which electrical device is more expensive to use based on David’s
and Sarah’s weekly usage? Justify your answer by calculating the
costs.
[2]
Total [6]
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Mark scheme:
Question
3
(a)
Answer
Marks
1
17.5 hours
Guidance
3.5 x 5
17.5 hours
(b)
1
15 hours
2.5 x 6
15 hours
(c)
1
2.1 kWh
0.120 kW x 17.5 hours
2.1 kWh
(d)
1
2.25 kWh
0.150 kW x 15 hours
2.25 kWh
(e)
2
Console/TV costs more [1]
Justification
Laptop
2.1 x 12p = 25.2p
Console/TV costs
2.25 x 12p = 27p
Therefore cost of running
console/TV is more
expensive
[1 mark]
6
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4.
Charlotte is using a hair dryer. It transforms electrical energy into various other forms of
energy.
(a)
Complete the following energy transfer diagram.
electrical energy →
+
+
[3]
(b)
Does the hair dryer waste any energy? If so, explain how.
[1]
(c)
Is energy conserved in the above example? Justify your answer.
[2]
(d)
A hair dryer and a toaster are both rated at 600 W. Which is more
efficient at transferring electrical energy into useful energy? Justify
your answer.
[2]
Total [8]
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Mark scheme:
Question
4
(a)
Answer
Marks
Guidance
3
heat energy (heating
element)[1]
kinetic energy (fan)[1]
sound energy[1]
(b)
Sound energy from the fan
1
(c)
Yes [1]
2
The amount of electrical
energy supplied will equal
the sum of the output
energy heat (heating
element) + kinetic (fan) +
sound (noise from fan) [1]
4
(d)
Toaster [1] as it does not
make sound, therefore all
the electrical energy is
transformed into useful heat
energy. [1]
2
(a)
heat energy (heating
element)[1]
3
Note: the sound from the toaster comes
from elastic potential energy in the spring.
kinetic energy (fan)[1]
sound energy[1]
8
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5.
A wind turbine produces 2500 kJ of electrical energy per second from a wind input energy
of 6250 kJ per second.
(a)
Complete the Sankey diagram below.
[2]
(b)
What is the efficiency of the wind turbine?
[2]
Total [4]
Mark scheme:
Question
5
(a)
Answer
Marks
Guidance
2
Correctly labelled:
Both needed for 1 mark:
Wind energy 6250 kJ
Electrical energy 2500 J [1]
Wasted energy
3750 J [1]
(b)
2
Calculation
2500 ÷6250 x100 % [1]
Answer
40 % [1]
4
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6.
A group of students is going on an adventure holiday in Wales. The school has recommend
that the students bring an insulated mug for hot drinks such as hot chocolate, as many the
activities will be outside and it will be cold.
Michael is investigating two different cups to find out which cup keeps hot drinks warm for
the longest. Each cup is made from the same material. Michael fills each cup with the
same amount hot chocolate and records the temperature every minute using a standard
thermometer.
t/min
Cup A T/°C
Cup B T/°C
0
92
95
1
81
84
2
74
79
3
70
76
4
68
74
5
66
73
6
65
72
(a)
Which cup decreases the rate of cooling? Justify your answer by
referring to the data.
[2]
(b)
Which cup is the thinnest? Justify your answer.
[1]
(c)
Explain how parallax could have affected Michael’s results.
[1]
Total [4]
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Mark scheme:
Question
6
(a)
Answer
Marks
Guidance
2
cup B [1]
It has the smallest temperature
drop. The temperature of Cup
B drops by 23°C while cup B
drops by 27°C. [1]
(b)
1
Cup A
Cup A cooled quickest
because rate of cooling
depends of the thickness of
the insulating material. As this
cooled the quickest the
material must be thinner.
(c)
1
Parallax is a displacement or
difference in the apparent
position of an object viewed
along two different lines of
sight. The readings will either
be higher of lower than they
should be.
4
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7.
(a)
Which of the following are thermal power stations?
A
Solar
B
Nuclear
C
Wave
D
Wind
[1]
Your answer
(b)
B
Which two of the following primary energy sources for power stations do not produce
CO2?
A
Oil
B
Gas
C
Nuclear
D
Wave
[1]
Your answer
C
D
Mark scheme:
Question
7
Answer
Marks
(a)
B - Nuclear
1
(b)
need both for 1 mark:
1
Guidance
C - Nuclear
D - Wave
2
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8.
Some power stations use gas as their primary energy source. Below is a block diagram
showing the main components of a gas-burning power station. Complete the diagram with
the names of the missing components.
[2]
Mark scheme:
Question
8
Answer
Marks
Guidance
2
3 correct: 2 marks
1 or 2 correct: 1 mark
Turbine
Generator
Transformer
2
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(a)
9.
In the UK domestic supply is rated at
A
230 V a.c.
B
110 V d.c.
C
230 V d.c.
D
110 V a.c
[1]
C
Your answer
(b) What is the National Grid and why are transformers essential for it to function correctly?
[3]
Total [4]
Mark scheme:
Question
9
Answer
Marks
(a)
C - 230V a.c.
1
(b)
The National Grid
distributes power in the UK
by connecting power
stations to homes and
businesses.[1]
3
Guidance
Involves transformers
stepping up or stepping
down voltage. [1]
Transformers are
necessary to step up
voltages to reduce energy
loss during transmission. [1]
4
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10.
(a)
Label the live, neutral and earth wire on the following plug:
[2]
(b) Rebecca has bought a second hand kettle from a car boot sale. The kettle’s casing is
made out of metal. Rebecca notices that the earth wire has not been connected to the
plug correctly. Explain why Rebecca might be at risk of an electric shock.
[1]
(c)
Explain how the correctly wired earth wire and the fuse would protect Rebecca from
electric shock.
[1]
Total [4]
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Mark scheme:
Question
10
(a)
Answer
Marks
Guidance
2
3 correct: 2marks
2 correct: 1 mark
1 correct: 0 marks
(b)
The live wire inside the kettle
might come into contact with the
metal casing which would mean
the touching the metal casing
would cause an electric shock.
1
(c)
If the Earth wire had been
connected correctly (to the
kettle’s metal casing and the
plug) then a large current would
have flowed through the casing
to earth causing the fuse to
blow.
1
4
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11.
A small village is planning to generate their own electricity by building a small solar farm.
The dimensions of the available patch of land for this project are 110 m x 30 m. There are
154 houses in total. Each house consumes an average of 11 kWh a day.
The average daily output of 1 solar panel is 0.8 kWh.
(a)
How many solar panels will be needed to meet the average daily
demand of the small village?
[1]
(b)
Each solar panel has the following dimensions: 2m x 0.8m.
What would be the minimum total area required for a solar farm?
[1]
(c)
Is there enough land for the project to go ahead? Justify your
answer.
[1]
(d)
Give one suggestion how each household could reduce their
electrical energy consumption.
[1]
Total [4]
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Mark scheme:
Question
11
(a)
Answer
Marks
1
2145 solar panels
Guidance
Daily village consumption:
156 x 11 kWh
= 1716 kWh [1]
1716/0.8
=2145 solar panels [1]
(b)
3432 m2
1
Calculate the area of one solar
panel
2 m x 0.8 m
1.6 m2
Find the minimum area required
1.6 x 2145
=3432 m2
(c)
1
No.
The area available for development
is 120 x 30 = 3200 m2
(d)
1
Any from the following:
 Replace electrical appliances
with more energy efficient
devices, e.g. LED lights
 Insulate house e.g. double
glazing, loft insulation, thicker
carpets, thicker curtains
 Unplug electrical devices such as
TV, consoles, etc. at night time.
 Wash full loads in washing
machine/dishwasher rather than
half loads
 Use gas rather than electricity
e.g. gas ovens, gas heating
4
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If you are looking for examination practice materials, you can find the Sample Assessment Materials (SAMs) on the qualification
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© OCR 2016 - This resource may be freely copied and distributed, as long as the OCR logo and this message remain intact and OCR is acknowledged as the originator of this
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OCR acknowledges the use of the following content: Toaster, VitaminCo/Shutterstock.com; hair dryer, TIMURA/Shutterstock.com, travel mug, Vitaly Korovin/Shutterstock.com;
thermometer, withGod/Shutterstock.com; solar panels; Linda Brotkorb/Shutterstock.com;
Please get in touch if you want to discuss the accessibility of resources we offer to support delivery of our qualifications: resources.feedback@ocr.org.uk
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End of chapter quiz
Chapter P2: Sustainable energy
Learner Activity
Chapter: P2 of J259
Total marks: 40
1.
A mobile phone is rated at 2 W when it is being used. It is used for 5 minutes. How
many Joules of energy does it use?
A
10 J
B
2.5 J
C
1000 J
D
600 J
[1]
Your answer
2.
Some power stations use oil as their primary energy source. What type of energy is
stored in oil?
A
Thermal
B
Kinetic
C
Chemical
D
Light
[1]
Your answer
Version 1
19
© OCR 2016
3.
David and Sarah are trying to work out whether it is more expensive to use a laptop
or a games console. They both use the same electricity supplier which charges 12p
per kWh.
David uses his games console 2 ½ hours a day, 6 days a week. The combined power
rating of the games console and LED TV is 150W.
Sarah uses her laptop 3.5 hours a day, 5 days a week. The laptop has a power rating
of 120WThe greenhouse effect is causing climate change. Scientists aim to reduce
the greenhouse effect by reducing the use of fossil fuels.
(a)
How many hours does Sarah use her laptop for in one week?
[1]
(b)
How many hours does David use his games console for in one
week?
[1]
c)
How many kWh does Sarah’s laptop use in 1 week?
[1]
d)
How many kWh does David’s console and TV use in 1 week?
[1]
e)
Which electrical device is more expensive to use based on David’s
and Sarah’s weekly usage? Justify your answer by calculating the
costs.
[2]
Total [6]
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© OCR 2016
4.
Charlotte is using a hair dryer. It transforms electrical energy into various other forms
of energy.
(a)
Complete the following energy transfer diagram.
electrical energy →
+
+
[3]
(b)
Does the hair dryer waste any energy? If so, explain how.
[1]
(c)
Is energy conserved in the above example? Justify your answer.
[2]
(d)
A hair dryer and a toaster are both rated at 600 W. Which is more
efficient at transferring electrical energy into useful energy? Justify
your answer.
[2]
Total [8]
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5.
A wind turbine produces 2500 kJ of electrical energy per second from a wind input
energy of 6250 kJ per second.
(a)
Complete the Sankey diagram below.
[2]
(b)
What is the efficiency of the wind turbine?
[2]
Total [4]
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© OCR 2016
6.
A group of students is going on an adventure holiday in Wales. The school has
recommend that the students bring an insulated mug for hot drinks such as hot
chocolate, as many the activities will be outside and it will be cold.
Michael is investigating two different cups to find out which cup keeps hot drinks
warm for the longest. Each cup is made from the same material. Michael fills each
cup with the same amount hot chocolate and records the temperature every minute
using a standard thermometer.
t/min
Cup A T/°C
Cup B T/°C
0
92
95
1
81
84
2
74
79
3
70
76
4
68
74
5
66
73
6
65
72
(a)
Which cup decreases the rate of cooling? Justify your answer by
referring to the data.
[2]
(b)
Which cup is the thinnest? Justify your answer.
[1]
(c)
Explain how parallax could have affected Michael’s results.
[1]
Total [4]
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© OCR 2016
7.
(a)
Which of the following are thermal power stations?
A
Solar
B
Nuclear
C
Wave
D
Wind
[1]
Your answer
(b)
Which two of the following primary energy sources for power stations do not
produce CO2?
A
Oil
B
Gas
C
Nuclear
D
Wave
[1]
Total [2]
Your answer
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© OCR 2016
8.
Some power stations use gas as their primary energy source. Below is a block
diagram showing the main components of a gas-burning power station. Complete the
diagram with the names of the missing components.
[2]
Total [2]
9.
(a)
In the UK domestic supply is rated at
A
230 V a.c.
B
110 V d.c.
C
230 V d.c.
D
110 V a.c
[1]
Your answer
(b) What is the National Grid and why are transformers essential for it to function
correctly?
[3]
Total [4]
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25
© OCR 2016
10.
(a)
Label the live, neutral and earth wire on the following plug:
[2]
(b) Rebecca has bought a second hand kettle from a car boot sale. The kettle’s
casing is made out of metal. Rebecca notices that the earth wire has not
been connected to the plug correctly. Explain why Rebecca might be at risk
of an electric shock.
[2]
(c)
Explain how the correctly wired earth wire and the fuse would protect
Rebecca from electric shock.
[2]
Total [4]
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26
© OCR 2016
11.
A small village is planning to generate their own electricity by building a small solar
farm. The dimensions of the available patch of land for this project are 110m x 30m.
There are 154 houses in total. Each house consumes an average of 11 kWh a day.
The average daily output of 1 solar panel is 0.8 kWh.
(a)
How many solar panels will be needed to meet the average daily
demand of the small village?
[1]
(b)
Each solar panel has the following dimensions: 2m x 0.8m.
What would be the minimum total area required for a solar farm?
[1]
(c)
Is there enough land for the project to go ahead? Justify your
answer.
[1]
(d)
Give one suggestion how each household could reduce their
electrical energy consumption.
[1]
Total [4]
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© OCR 2016