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Centre number Candidate number
Surname
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GCSE
COMBINED SCIENCE: TRILOGY
Foundation Tier
F
Physics Paper 1F
Wednesday 23 May 2018 Afternoon Time allowed: 1 hour 15 minutes

Materials For Examiner’s Use
For this paper you must have:
• a ruler Question Mark
• a scientific calculator 1
• the Physics Equations Sheet (enclosed). 2
3
Instructions
• Use black ink or black ball-point pen. 4
• Fill in the boxes at the top of this page. 5
• Answer all questions in the spaces provided.
6
• Do all rough work in this book. Cross through any work you do not want to be
marked. 7
• In all calculations, show clearly how you work out your answer.
TOTAL
Information
• The maximum mark for this paper is 70.
• The marks for questions are shown in brackets.
• You are expected to use a calculator where appropriate.
• You are reminded of the need for good English and clear presentation in your
answers.
*jun188464p1f01*
IB/M/Jun18/E13 8464/P/1F
2
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outside the
0 1 There are many different energy resources. box
0 1 . 1 Which two energy resources are renewable?

[2 marks]
Tick two boxes.
Biofuel
Coal
Gas
Geothermal
Nuclear fuel
0 1 . 2 Some non-renewable energy resources are more reliable than others.
Which statement correctly describes a reliable resource?

[1 mark]
Tick one box.
It does not burn fuel.
It is predictable.
It will never run out.
It is cheap to use.
*02*
IB/M/Jun18/8464/P/1F
3
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outside the
0 1 . 3 Figure 1 shows a wind farm. box
Figure 1
The total power output of the wind farm is 19.6 MW
All of the wind turbines have the same power output.
What is the power output of one wind turbine?

[1 mark]
Tick one box.
2.7 MW
2.8 MW
2.9 MW
3.2 MW
3.3 MW
0 1 . 4 Give two reasons why people might not like having wind turbines near their homes.
[2 marks]
Turn over ►
*03*
4
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0 1 . 5 Figure 2 shows the electricity generated by different energy resources in the UK. box
The total amount of electricity generated was the same in 2014 and in 2015
Figure 2
There are changes in the amounts of different energy resources used between
2014 and 2015
Explain the environmental impacts of the changes.

[4 marks]
10
*04*
5
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outside the
0 2 Figure 3 shows a mobile phone being recharged by a portable power source. box
Figure 3
0 2 . 1 Why does the battery in the phone need recharging?

[1 mark]
Tick one box.
The store of chemical energy in the battery has reduced.
The store of thermal energy in the battery has reduced.
The store of kinetic energy in the battery has reduced.
The store of gravitational energy in the battery has reduced.
Question 2 continues on the next page
Turn over ►
*05*
6
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0 2 . 2 The power source provides a current of 1.86 A at a potential difference of 3.90 V box
Calculate the power of the power source.
Use the equation:
power = potential difference × current
Choose the correct unit from the box.

[3 marks]
C J W
Power =
Unit
*06*
7
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0 2 . 3 A student needs a new power source. box
Figure 4 shows three different sized power sources.
Figure 4
Table 1 gives data about the different power sources.
Table 1
Power source Number of charges Mass in grams
Compact 1 100
Large 5 200
High capacity 10 600
The student chose the large power source.
Suggest why the student chose the large power source.

[4 marks]
Turn over ►
*07*
8
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outside the
0 3 Figure 5 shows a girl skateboarding on a semi-circular ramp. box
Figure 5
The girl has a mass of 50 kg
0 3 . 1 Calculate the gravitational potential energy (g.p.e.) of the girl at the top of the ramp.
Use the equation:
g.p.e. = mass × gravitational field strength × height
gravitational field strength = 9.8 N/kg

[2 marks]
g.p.e. = J
0 3 . 2 The girl has a speed of 7 m/s at the bottom of the ramp.
Calculate the kinetic energy of the girl at the bottom of the ramp.
Use the equation:
kinetic energy = 0.5 × mass × (speed)2

[2 marks]
Kinetic energy = J
*08*
9
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outside the
0 3 . 3 Not all of the g.p.e. has been transferred to kinetic energy. box
Which two statements explain why?

[2 marks]
Tick two boxes.
Some energy is wasted.
The mass of the girl is too low.
The ramp is not high enough.
The g.p.e. of the girl is not zero.
The speed of the girl is too great.
0 3 . 4 Explain how lubricating the wheels of the skateboard can increase the speed of
the girl.
Use ideas about energy in your explanation.

[3 marks]
Turn over for the next question
Turn over ►
*09*
10
Do not write
outside the
0 4 Some ceiling lights in the home are connected to the mains by a two-core cable. box
Figure 6 shows a ceiling light.
Figure 6
0 4 . 1 Suggest why some ceiling lights do not have an earth wire.

[2 marks]
0 4 . 2 Write down the equation that links charge flow, current and time.
[1 mark]
0 4 . 3 There is a current of 2.95 A in one of the copper wires for 60 seconds.
Calculate the charge flow through the wire.
Use your equation from question 04.2

[2 marks]
Charge flow = C
*10*
11
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0 4 . 4 Figure 7 shows a current potential difference graph for a piece of copper wire. box
Figure 7
Draw another line on Figure 7 for a wire with a different resistance.

[2 marks]
Turn over ►
*11*
12
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outside the
Some fuses have a thin piece of copper that melts if the current is too large. box
0 4 . 5 Draw the circuit symbol for a fuse.

[1 mark]
0 4 . 6 Describe how the movement of the copper particles in the wire changes when
copper melts.
[2 marks]
0 4 . 7 Old copper wires are melted when they are recycled.
Calculate the energy needed to melt 500 kg of copper at its melting point.
Specific latent heat of fusion of copper = 200 kJ/kg
Use the Physics Equations Sheet.

[3 marks]
Energy = J
13
*12*
13
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outside the
0 5 Radioactive nuclei can emit alpha, beta or gamma radiation. box
0 5 . 1 Which type of radiation is the most penetrating?

[1 mark]
Tick one box.
Alpha (α)
Beta (β)
Gamma (γ)
0 5 . 2 Which type of radiation is the most ionising?

[1 mark]
Tick one box.
Alpha (α)
Beta (β)
Gamma (γ)
0 5 . 3 Which type of radiation has the longest range in air?

[1 mark]
Tick one box.
Alpha (α)
Beta (β)
Gamma (γ)
Turn over ►
*13*
14
Do not write
outside the
When radioactive isotopes in the Earth’s crust decay they release energy. box
The decay causes the heating of rocks in the crust.
0 5 . 4 Figure 8 shows the decay of uranium–238 (U–238) into thorium–234 (Th–234).
Figure 8
238 234
92U 90Th + 42He
Complete Table 2 to show the number of neutrons and protons in the nuclei.
[2 marks]
Table 2
Isotope Number of neutrons Number of protons
uranium–238 146
thorium–234 90
0 5 . 5 Geothermal power stations pump water through heated rocks.
The temperature of the water increases from 20 °C to its boiling point of 100 °C
Calculate the change in thermal energy when the mass of water heated is 150 kg
Specific heat capacity = 4 200 J/kg °C
Use the Physics Equations Sheet.

[3 marks]
Change in thermal energy = J
*14*
15
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outside the
0 6 Figure 9 shows two models of the atom. box
Figure 9
0 6 . 1 Write the labels on Figure 9
Choose the answers from the box.

[4 marks]
atom electron nucleus
neutron orbit proton
0 6 . 2 Explain why the total positive charge in every atom of an element is always the same.
[2 marks]
Turn over ►
*15*
16
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outside the
0 6 . 3 The results from the alpha particle scattering experiment led to the nuclear model. box
Alpha particles were fired at a thin film of gold at a speed of 7% of the speed of light.
Determine the speed of the alpha particles.
Speed of light = 300 000 000 m/s

[2 marks]
Speed = m/s
0 6 . 4 Figure 10 shows two atoms represented as solid spheres.
Figure 10
A hydrogen atom has a radius of 2.5 × 10–11 m
Determine the radius of a magnesium atom.
Use measurements from Figure 10

[2 marks]
Radius = m
10
*16*
17
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outside the
0 7 A student wanted to determine the density of the irregular shaped object shown box
in Figure 11
Figure 11
0 7 . 1 Plan an experiment that would allow the student to determine the density
of the object.
[6 marks]
Turn over ►
*17*
18
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outside the
0 7 . 2 Another student did a similar experiment. box
He determined the density of five common plastic materials.
Table 3 shows the results.
Table 3
Plastic material Density in kg/m3
Acrylic 1200
Nylon 1000
Polyester 1380
Polystyrene 1040
PVC 1100
Figure 12 shows the results plotted in a bar chart.
Figure 12
Complete Figure 12
You should:
• Write the correct scale on the y-axis.

• Draw the bars for polyester, polystyrene and PVC.
[4 marks]
*18*
19
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outside the
0 7 . 3 The student is given a piece of a different plastic material. box
The student determined the density of the material three times.
Table 4 shows the results.
Table 4
Density in kg/m3
1 960
2 1120
3 1040
Determine the uncertainty in the student’s results.

[2 marks]
Uncertainty = kg/m3
12
END OF QUESTIONS
Turn over ►
*19*
20
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outside the
There are no questions printed on this page box
DO NOT WRITE ON THIS PAGE

ANSWER IN THE SPACES PROVIDED
Copyright information
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separate booklet rather than including them on the examination paper or support materials. This booklet is published after each examination series and is
available for free download from www.aqa.org.uk after the live examination series.
Permission to reproduce all copyright material has been applied for. In some cases, efforts to contact copyright-holders may have been unsuccessful and
AQA will be happy to rectify any omissions of acknowledgements. If you have any queries please contact the Copyright Team, AQA, Stag Hill House,
Guildford, GU2 7XJ.
Copyright © 2018 AQA and its licensors. All rights reserved.
*20*

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Please write clearly in block capitals.

Centre number Candidate number

Wednesday 23 May 2018 Afternoon Time allowed: 1 hour 15 minutes

0 1 . 1 Which two energy resources are renewable?

0 1 . 2 Some non-renewable energy resources are more reliable than others.

Which statement correctly describes a reliable resource?

It does not burn fuel.

It will never run out.

The total power output of the wind farm is 19.6 MW

All of the wind turbines have the same power output.

What is the power output of one wind turbine?

Explain the environmental impacts of the changes.

0 2 . 1 Why does the battery in the phone need recharging?

The store of chemical energy in the battery has reduced.

The store of thermal energy in the battery has reduced.

The store of kinetic energy in the battery has reduced.

The store of gravitational energy in the battery has reduced.

Question 2 continues on the next page

Calculate the power of the power source.

Use the equation:

power = potential difference × current

Choose the correct unit from the box.

Figure 4 shows three different sized power sources.

Table 1 gives data about the different power sources.

Power source Number of charges Mass in grams

High capacity 10 600

The student chose the large power source.

Suggest why the student chose the large power source.

The girl has a mass of 50 kg

Use the equation:

g.p.e. = mass × gravitational field strength × height

gravitational field strength = 9.8 N/kg

0 3 . 2 The girl has a speed of 7 m/s at the bottom of the ramp.

Use the equation:

kinetic energy = 0.5 × mass × (speed)2

Which two statements explain why?

Some energy is wasted.

The mass of the girl is too low.

The ramp is not high enough.

The g.p.e. of the girl is not zero.

The speed of the girl is too great.

Use ideas about energy in your explanation.

Turn over for the next question

Figure 6 shows a ceiling light.

0 4 . 1 Suggest why some ceiling lights do not have an earth wire.

0 4 . 3 There is a current of 2.95 A in one of the copper wires for 60 seconds.

Calculate the charge flow through the wire.

Use your equation from question 04.2

Draw another line on Figure 7 for a wire with a different resistance.

Question 4 continues on the next page

0 4 . 5 Draw the circuit symbol for a fuse.

0 4 . 7 Old copper wires are melted when they are recycled.

Specific latent heat of fusion of copper = 200 kJ/kg

Use the Physics Equations Sheet.

0 5 . 1 Which type of radiation is the most penetrating?

0 5 . 2 Which type of radiation is the most ionising?

0 5 . 3 Which type of radiation has the longest range in air?

Question 5 continues on the next page

The decay causes the heating of rocks in the crust.