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Engineering Mathematics (Enugu State University of Science & Technology)
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Science
Stage 9
2024
Paper 1
45 minutes
No additional materials are needed.
INSTRUCTIONS
• Answer all questions.
• Write your answer to each question in the space provided.
• You should show all your working on the question paper.
INFORMATION
• The total mark for this paper is 50.
• The number of marks for each question or part question is shown in brackets [ ].
3146_01_6RP
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1
Look at the diagram of the human excretory (renal) system.
E
vein
A
B
C
D
(a) Complete the table to name the parts labelled A, B, C, D and E.
part
name of part
A
B
C
D
E
[3]
(b) Urea ammonium nitrate is an organic fertiliser.
What do plants make using nitrates?
[1]
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2
Methane has a simple structure.
Look at the model of a molecule of methane.
H
H
C
H
H
key
electron from hydrogen
electron from carbon
(a) How many electrons are in a molecule of methane?
[1]
(b) Write down the type of bonding in a molecule of methane.
Explain your answer.
type of bonding
explanation
[2]
(c) Methane has a simple structure.
Predict one physical property of methane.
[1]
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3
Jamila spills some liquid on the back of her hand.
After a short time, Jamila’s hand feels cold.
Name the process that makes her hand feel cold.
[1]
4
Look at the diagram of part of the carbon cycle.
carbon dioxide
in the air
A
decomposition
fossil fuels
carbon
compounds
in animals
B
carbon
compounds
in plants
carbon
compounds in
dead animals
and plants
(a) One of the arrows in the diagram shows photosynthesis.
Write the letter P on the arrow that shows photosynthesis.
[1]
(b) Name process A and process B.
process A
process B
[2]
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5
Lily reacts magnesium with copper sulfate solution.
(a) Name this type of reaction.
[1]
(b) Name the two products of this reaction.
and
[2]
(c) Lily adds zinc to magnesium sulfate solution.
There is no reaction.
Explain why there is no reaction.
[1]
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6
Fetal development is affected by the health of the mother.
The table shows information about the mass of a fetus during pregnancy for a mother who
smokes.
age of the fetus
in weeks
mass of the fetus
in kg
36
2.40
37
2.55
38
2.60
39
2.85
40
3.00
(a) Draw the graph of this information:
• label the x-axis
• label the y-axis
• plot all the points from the table.
3.00
2.90
2.80
…………………………………
2.70
…………………………………
2.60
2.50
2.40
2.30
35
36
37
38
39
40
…………………………………
…………………………………
[2]
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(b) There is one anomalous result.
Circle the anomalous result on the graph.
(c) Draw a line of best fit on the graph.
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[1]
[1]
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7
This question is about different waveforms and sounds.
(a) Look at the diagram of a waveform.
Draw a double-headed arrow (
waveform.
or
) on the diagram to show the amplitude of the
[1]
(b) Aiko hears a high pitch sound and then a low pitch sound.
Write a sentence to compare the frequencies of the two sounds.
[1]
(c) Aiko plays a sound on her phone.
Complete the sentence.
The louder the sound the larger the
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8
The map shows the Earth’s continents.
North
America
Europe
Asia
Africa
South
America
Australasia
Antarctica
Fossils of a plant species that grew 200 million years ago have been found in South America,
Africa, Antarctica and Australasia.
Explain why fossils of this plant species are found on these four continents.
[2]
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9
Water travels through plants.
Look at the list of parts of a plant.
A leaf xylem
B stem xylem
C stoma on the surface of leaf
D root hair cell
E root xylem
Write down parts A to E in the correct order to show the pathway of water through a plant.
One has been done for you.
B
[2]
10 The table shows the melting points and boiling points of some Group 1 elements.
element
melting point
in °C
boiling point
in °C
lithium
181
1347
sodium
881
potassium
63
766
rubidium
39
688
(a) Describe the trend in the boiling point from the top to the bottom of Group 1.
[1]
(b) Predict the melting point of sodium.
°C [1]
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11 Yuri investigates current in a parallel electrical circuit.
(a) Draw his circuit with:
• a battery of cells
• a closed switch
• two lamps in parallel with each other
• a meter to measure the current through one of the lamps.
Use standard electrical symbols.
[3]
(b) Yuri uses the same components to make a series electrical circuit with two lamps.
Write a sentence to compare the brightness of the two lamps in the two circuits.
[1]
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12 Complete the sentences about nebulae.
Nebulae are enormous clouds of
and
.
Some nebulae act as stellar nurseries for new
.
[3]
13 The diagram shows how the appearance of a deer population changes over time.
R
In the colder
climate, some deer
survive better than
others.
Q
The deer move to
a colder climate.
S
The deer that survive
reproduce.
P
This population of deer
live in a warm climate.
(a) Look at the diagram.
The deer show variation.
Describe one example of variation shown in the diagram.
[1]
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(b) The appearance of the deer population changes over time from P to S.
The theory of natural selection explains this change in appearance.
Match each statement about natural selection to the correct letter in the diagram.
You may use each letter once, more than once or not at all.
statement about natural selection
letter
Some adaptations give advantages in one environment and not in another.
Genes controlling features which help survival pass into offspring.
Individuals with adaptations less advantageous to the environment die before
they reproduce.
[2]
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14 Oliver investigates the effect of temperature on the rate of reaction.
In his first experiment, Oliver:
• puts 20 cm3 of dilute hydrochloric acid into a beaker
• measures the temperature of the acid
• places a 5 cm strip of magnesium into the acid
• measures the reaction time.
Oliver repeats the experiment four more times.
Each time he uses acid at a different temperature.
beaker
hydrochloric acid
5 cm strip of magnesium
Look at his table of results.
temperature of acid
in °C
reaction time
in s
20
120
25
75
30
63
35
35
40
29
(a) Describe the relationship between the temperature of the acid and the reaction time.
[1]
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(b) Oliver repeats the investigation using more concentrated hydrochloric acid.
Write a prediction for this investigation.
Explain your prediction using the particle model.
prediction
explanation
[3]
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15 Look at the diagram of two waveforms.
Tick () the box which shows what happens when these two waveforms interact.
[1]
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16 This question is about the impact of climate change.
Write down two impacts of climate change.
1
2
[2]
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17 This question is about floating and sinking.
(a) Look at the table of densities for different materials.
material
density
in kg / m3
concrete
2400
iron
7000
plastic
920
water
1000
wood
600
Which materials from the table float in water?
Explain your answer.
materials
explanation
[2]
(b) An object sinks in water but floats in sea water.
Predict a value for the density of sea water.
Circle the correct answer.
100 kg / m3
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900 kg / m3
1000 kg / m3
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1030 kg / m3
[1]
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(c) An object is put into a container full of water.
The object floats and a volume of water comes out of the container.
The water is collected in a 100 cm3 measuring cylinder.
Look at the diagram of part of the measuring cylinder.
cm3
50
40
30
What volume of water is collected?
cm3
[1]
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge Assessment
International Education Copyright Acknowledgements Booklet. This is produced annually and is available to download at
https://lowersecondary.cambridgeinternational.org/
Cambridge Assessment International Education is part of Cambridge Assessment. Cambridge Assessment is the brand name of the University of Cambridge
Local Examinations Syndicate (UCLES), which is a department of the University of Cambridge.
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calcium
40
38
Sr
strontium
88
56
Ba
barium
137
88
potassium
39
37
Rb
rubidium
85
55
Cs
caesium
133
87
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actinoids
lanthanoids
–
Ca
K
–
actinoids
20
19
Ra
24
23
radium
magnesium
sodium
Fr
Mg
Na
francium
89–103
12
11
22
cerium
140
90
Th
thorium
232
lanthanum
139
89
Ac
actinium
–
231
protactinium
Pa
91
141
praseodymium
Pr
59
58
Ce
57
–
–
dubnium
Db
105
181
tantalum
Ta
73
93
niobium
Nb
41
51
vanadium
V
23
Cr
24
238
uranium
U
92
144
neodymium
Nd
60
–
seaborgium
Sg
106
184
tungsten
W
74
96
molybdenum
Mo
42
52
chromium
relative atomic mass
rutherfordium
Rf
104
178
hafnium
Hf
72
91
zirconium
Zr
40
48
titanium
Ti
La
lanthanoids
57–71
89
yttrium
Y
39
45
scandium
Sc
9
7
name
atomic symbol
Be
beryllium
Li
lithium
atomic number
4
3
Key
2
1
–
neptunium
Np
93
–
promethium
Pm
61
–
bohrium
Bh
107
186
rhenium
Re
75
–
technetium
Tc
43
55
manganese
Mn
25
–
plutonium
Pu
94
150
samarium
Sm
62
–
hassium
Hs
108
190
osmium
Os
76
101
ruthenium
Ru
44
56
iron
Fe
26
27
28
29
30
–
americium
Am
95
152
europium
Eu
63
–
meitnerium
Mt
109
192
–
curium
Cm
96
157
gadolinium
Gd
64
–
darmstadtium
Ds
110
195
platinum
Pt
Ir
iridium
78
106
palladium
Pd
46
59
nickel
Ni
77
103
rhodium
Rh
45
59
cobalt
Co
–
berkelium
Bk
97
159
terbium
Tb
65
–
roentgenium
Rg
111
197
gold
Au
79
108
silver
Ag
47
64
copper
Cu
–
californium
Cf
98
163
dysprosium
Dy
66
–
copernicium
Cn
112
201
mercury
Hg
80
112
cadmium
Cd
48
65
zinc
Zn
B
C
–
einsteinium
Es
99
165
holmium
Ho
67
–
nihonium
Nh
113
204
thallium
Tl
81
115
–
fermium
Fm
100
167
erbium
Er
68
–
flerovium
Fl
114
207
lead
Pb
82
119
tin
Sn
In
indium
50
73
germanium
Ge
32
28
silicon
Si
14
12
carbon
49
70
gallium
Ga
31
27
aluminium
Al
13
11
boron
6
–
mendelevium
Md
101
169
thulium
Tm
69
–
moscovium
Mc
115
209
bismuth
Bi
83
122
antimony
Sb
51
75
arsenic
As
33
31
phosphorus
P
15
14
nitrogen
N
7
–
nobelium
No
102
173
ytterbium
Yb
70
–
livermorium
Lv
116
–
polonium
Po
84
128
tellurium
Te
52
79
selenium
Se
34
32
sulfur
S
16
16
oxygen
O
8
–
lawrencium
Lr
103
175
lutetium
Lu
71
–
tennessine
Ts
117
–
astatine
At
85
127
iodine
I
53
80
bromine
Br
35
35.5
chlorine
Cl
17
19
fluorine
F
9
–
oganesson
Og
118
–
radon
Rn
86
131
xenon
Xe
54
84
krypton
Kr
36
40
argon
Ar
18
20
neon
Ne
10
4
5
helium
8
1
7
hydrogen
6
2
5
He
4
H
3
1
Group
The Periodic Table of Elements
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