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Question
General Certificate of Secondary Education
Foundation Tier
June 2015
Mark
1
2
3
Additional Applied Science
Unit 1
AAS1FP
5
Science at Work
Thursday 14 May 2015
F
9.00 am to 10.00 am
For this paper you must have:
 a ruler
 a calculator
 the Equations Sheet (enclosed).
6
7
8
9
10
Time allowed
 1 hour
A
4
TOTAL
Instructions
 Use black ink or black ball-point pen.
 Fill in the boxes at the top of this page.
 Answer all questions.
 You must answer the questions in the spaces provided. Do not write
outside the box around each page or on blank pages.
 Do all rough work in this book. Cross through any work you do not want
to be marked.
Information
 The marks for questions are shown in brackets.
 The maximum mark for this paper is 60.
 You are expected to use a calculator where appropriate.
 You are reminded of the need for good English and clear presentation in
your answers.
 Question 9 should be answered in continuous prose.
In this question you will be marked on your ability to:
– use good English
– organise information clearly
– use specialist vocabulary where appropriate.
Advice
 In all calculations, show clearly how you work out your answer.
(Jun15AAS1FP01)
G/KL/110705/Jun15/E5
AAS1FP
2
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Answer all questions in the spaces provided.
1
Figure 1 shows some of the safety signs commonly used in workplaces.
Figure 1
A
1 (a)
B
C
D
E
Which of the safety signs, A, B, C, D or E, shows a first aid point?
[1 mark]
Write the correct answer in the box.
1 (b)
Which of the safety signs, A, B, C, D or E, indicates that eye protection should be worn?
[1 mark]
Write the correct answer in the box.
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2
Different people and organisations investigate a range of problems in their job.
2 (a)
Draw one line from the people and the organisation to the jobs they do.
[3 marks]
People and organisation
Environmental
protection officer
Job
Checking bacteria
levels in milk
Monitoring air
pollution
Forensic
scientist
Matching bullets
to firearms
Food Standards
Agency
Testing BMI
2 (b)
Good laboratory procedures are important to get reliable evidence.
Which two of the following help with good laboratory procedure?
[2 marks]
Tick () two boxes.
Tick ()
Car parking for staff
Good health and safety practices
Having meals provided in a staff dining room
Looking after equipment and checking equipment
Having flexible working hours
Having lots of staff
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4
3
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When working in laboratories, scientists follow standard procedures to obtain evidence.
A scientist used a standard chromatography procedure, as shown in Figure 2, to
separate and identify the food colourings in a sweet.
Figure 2
Tank with lid
Chromatography paper
Reference food colourings
Colouring from sweet
Pencil line
Solvent
3 (a)
Use Figure 2 to help you choose the correct statement from Table 1 to answer the
following questions about why the standard chromatography procedure is done.
Table 1
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U
To stop the solvent from evaporating off the chromatography paper
V
So that the colours from the sweet can be identified
W
To get maximum separation of the food colourings
X
To see into the tank
Y
Because food colourings separate only when dissolved
Z
So that the food colourings do not go into the solvent
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Write the correct letter, U, V, W, X, Y or Z, from Table 1 in each answer box.
3 (a) (i)
Why is the sweet dissolved in water?
[1 mark]
3 (a) (ii) Why are drops of reference food colourings placed on the
chromatography paper?
[1 mark]
3 (a) (iii) Why is the tank covered?
[1 mark]
3 (a) (iv) Why is the chromatography paper left in the tank until the
solvent has nearly travelled to the top of the paper?
[1 mark]
3 (b)
Which of the following is most likely to be improved by using a standard procedure?
[1 mark]
Tick () one box.
profit
speed of production
staff wages
reliability
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6
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4
An analytical scientist may analyse body fluids such as blood.
4 (a) (i)
Figure 3 shows some blood under a microscope.
Figure 3
K .................................
J .................................
L .................................
Use words from the box to label parts J, K and L on Figure 3.
[3 marks]
antibody
red blood cell
capillary
platelet
hormone
white blood cell
4 (a) (ii) What is the liquid part of blood called?
[1 mark]
............................................................................................................................................
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4 (b)
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There are four human blood groups.
Table 2 shows the percentage of the UK population that has each blood group.
Table 2
Blood group
Percentage (%) of the population
O
44
A
42
B
10
AB
4 (b) (i)
Use Table 2 to calculate the percentage of the population with blood group AB.
[1 mark]
............................................................................................................................................
............................................................................................................................................
.................... %
4 (b) (ii) Analytical scientists are sometimes asked to identify a person by analysing body fluids.
Blood group tests cannot be used to identify a person.
Suggest why.
[1 mark]
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
Question 4 continues on the next page
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4 (c)
DNA tests can be used to identify a person.
4 (c) (i)
DNA can be extracted from blood.
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Which part of a blood cell contains DNA?
[1 mark]
............................................................................................................................................
4 (c) (ii) Name one other body fluid DNA can be extracted from.
[1 mark]
............................................................................................................................................
4 (c) (iii) People can be identified by making a DNA profile.
Figure 4 shows the DNA profiles of five people.
Figure 4
A
B
C
D
E
Which two of the profiles A, B, C, D and E are of identical twins?
[1 mark]
...................................................................... and ...............................................................
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Turn over for the next question
DO NOT WRITE ON THIS PAGE
ANSWER IN THE SPACES PROVIDED
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10
5
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Some scientists want to find the age of the ice at the South Pole.
They know the age of different pollen grains.
They often use pollen grains, found in the ice, to find the age of the ice.
5 (a)
One type of pollen grain is shown in Figure 5.
Figure 5
Suggest two features that could be used to identify the pollen grain in Figure 5.
[2 marks]
1 .........................................................................................................................................
2 .........................................................................................................................................
5 (b)
The scientists looked at the pollen grain with an electron microscope rather than with a
standard optical microscope.
Suggest one reason why.
[1 mark]
............................................................................................................................................
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5 (c)
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Electrons are particles found in atoms.
Figure 6 shows a diagram of one type of atom.
Draw a circle around an electron on the diagram in Figure 6.
[1 mark]
Figure 6
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4
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6
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Figure 7 shows an electrical plug which is used to connect appliances to the mains
electrical supply in the UK.
Figure 7
6 (a)
Use the correct answer from the box to complete each sentence.
a compound
a conductor
an insulator
6 (a) (i)
an alloy
magnetic
an element
smooth
The case of the electrical plug is made of plastic
because plastic is ................................................. .
[1 mark]
6 (a) (ii) The pins of the electrical plug are made of brass
because brass is ................................................. .
[1 mark]
6 (a) (iii) Brass is made from a mixture of copper and zinc.
A mixture of metals is called ................................................. .
[1 mark]
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6 (b)
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Table 3 shows some properties of three metals.
Table 3
Conductivity in
arbitrary units
Density in
kg/m3
Cost in
£/kg
Copper
0.65
9000
6.00
Iron
0.11
8000
0.50
Aluminium
0.40
2700
1.00
Metal
Give one advantage and one disadvantage of using copper, rather than iron
or aluminium, in electrical wires.
Use the information in Table 3 to help you.
[2 marks]
Advantage ..........................................................................................................................
............................................................................................................................................
Disadvantage .....................................................................................................................
............................................................................................................................................
Question 6 continues on the next page
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6 (c)
Do not write
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Electrical plugs sold in the UK should have a Kitemark symbol on them, as shown
in Figure 8.
Figure 8
FUSED
6 (c) (i)
What does the Kitemark symbol, in Figure 8, stand for?
[1 mark]
............................................................................................................................................
............................................................................................................................................
6 (c) (ii) Why is it important to only use plugs with this symbol on them?
[1 mark]
............................................................................................................................................
............................................................................................................................................
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7
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Turn over for the next question
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ANSWER IN THE SPACES PROVIDED
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16
7
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People injured whilst walking or climbing are helped by rescue teams, as shown in
Figure 9.
Oxygen cylinders may have to be carried to the injured person.
Figure 9
Table 4 gives some information about the oxygen cylinders available.
Table 4
Steel
cylinder
Aluminium
cylinder
Carbon wrapped
cylinder
Material used to make
cylinder
Steel
Aluminium
Aluminium alloy liner
strengthened with
carbon fibre casing
Mass of cylinder
6 kg
3.5 kg
1.8 kg
345 litres
450 litres
600 litres
30 minutes
40 minutes
Volume of oxygen in
cylinder
Time taken to empty
cylinder
Cost of cylinder and refills
£50 per year
Free refills
No annual cost
Free refills
£300 per year
£7 per refill
Time taken to replace an
empty cylinder
1 day
1–2 days
2–7 days
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7 (a)
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Oxygen is used at 15 litres per minute.
Calculate the time taken to empty the steel cylinder.
[2 marks]
............................................................................................................................................
............................................................................................................................................
.................... minutes
7 (b) (i)
State which cylinder, from Table 4, you think the rescue team should use.
Give two reasons for your choice.
[2 marks]
1 .........................................................................................................................................
............................................................................................................................................
2 .........................................................................................................................................
............................................................................................................................................
7 (b) (ii) Give two disadvantages of the cylinder you chose in part (b)(i).
[2 marks]
1 .........................................................................................................................................
............................................................................................................................................
2 .........................................................................................................................................
............................................................................................................................................
7 (c)
2.4 kg of steel was used to make a cylinder.
The volume of steel used was 0.0003 m3.
Use this information to calculate the density of steel.
Use the Equations Sheet to help you answer the question.
[2 marks]
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
Density = .................... kg/m3
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8
18
8 (a)
Do not write
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An analytical chemist was showing a trainee how to analyse compounds.
He did some tests on solid copper (II) sulfate crystals.
8 (a) (i)
Copper (II) sulfate contains copper ions (Cu2+) and sulfate ions (SO42–).
Write the chemical formula for copper (II) sulfate.
[1 mark]
............................................................................................................................................
8 (a) (ii) The trainee wrote down the colour of the copper (II) sulfate.
What colour is copper (II) sulfate?
[1 mark]
............................................................................................................................................
8 (a) (iii) The trainee burned a small amount of copper (II) sulfate in the roaring flame of a
Bunsen burner.
What colour was the flame?
[1 mark]
............................................................................................................................................
8 (a) (iv) What would the trainee see if he added dilute sodium hydroxide to a solution
of copper (II) sulfate?
[1 mark]
............................................................................................................................................
............................................................................................................................................
8 (a) (v) What would the trainee see if he added dilute hydrochloric acid and then dilute
barium chloride to a solution of copper (II) sulfate?
[1 mark]
............................................................................................................................................
............................................................................................................................................
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8 (b)
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The trainee then did some tests to identify a different compound, Q.
The trainee’s observations are shown in Table 5.
Table 5
Test
Observation
Compound Q was dissolved in water
and dilute sodium hydroxide was
added.
Brown solid forms.
Compound Q was dissolved in water
and dilute nitric acid was added
followed by dilute silver nitrate.
White solid forms.
Look at the tests and observations for compound Q.
Suggest the name for compound Q.
[2 marks]
............................................................................................................................................
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7
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9
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In this question you will be assessed on using good English, organising
information clearly and using specialist terms where appropriate.
The food that we eat can be produced either by intensive farming methods or
by organic farming methods.
A new farmer is planning to specialise in wheat farming.
Which method of farming, intensive or organic, would you recommend to this farmer?
You should explain your recommendation by giving the advantages of your choice.
[6 marks]
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Extra space ........................................................................................................................
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Turn over for the next question
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6
22
10
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To assess their fitness, athletes may have their breathing rates measured at
different times.
Figure 10 shows a spirometer being used to measure an athlete’s breathing rate.
Figure 10
The spirometer is connected to a computer which records how much air is being
breathed in and out.
Figure 11 shows the computer printout.
Figure 11
6
5
4
Lung
volume 3
in litres
2
1
0
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0
5
10
15
20 25 30
Time in seconds
35
40
45
50
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10 (a)
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Label the athlete’s vital capacity on the graph in Figure 11.
[1 mark]
10 (b)
Use Figure 11 to estimate the athlete’s tidal volume.
[1 mark]
............................................ litres
10 (c)
Use Figure 11 to calculate the athlete’s breathing rate in breaths per minute.
[1 mark]
............................................ breaths per minute
10 (d)
The athlete’s breathing rate increases during exercise.
Explain why.
[4 marks]
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7
END OF QUESTIONS
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There are no questions printed on this page
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ANSWER IN THE SPACES PROVIDED
Acknowledgement of copyright-holders and publishers
Permission to reproduce all copyright material has been applied for. In some cases, efforts to contact copyright-holders have been unsuccessful and
AQA will be happy to rectify any omissions of acknowledgements in future papers if notified.
Question 1, Figure 1:
Question
Question
Question
Question
© Symbol A: reproduced from ISO 7010: 2011 with the permission from ISO at ISO.org. Copyright remains with ISO.
© Symbols B, C, D & E: contains public sector information published by the Health and Safety Executive and licensed
under the Open Government Licence.
5, Figure 5:
© Getty Images
6, Figure 7:
© Getty Images
6, Figure 8:
© KITEMARK and the BSI Kitemark device are reproduced with kind permission of The British Standards Institution.
They are registered trademarks in the United Kingdom and in certain other countries.
10, Figure 10: © c019/3823 Lung function test SCIENCE PHOTO LIBRARY
Copyright © 2015 AQA and its licensors. All rights reserved.
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