General Test Instructions
2003
SCHOOL
CERTIFICATE
TEST
•
Reading time: 10 minutes
•
Working time: 1 –12 hours
•
The supervisor will tell you when to begin the test
•
This test has TWO sections
•
Attempt ALL questions
•
Write using black or blue pen
•
Draw diagrams using pencil
•
Calculators may be used
•
Write your Centre Number and Student Number at the top
of pages 29, 33 and 37
Directions for Section 1
10 November
•
Attempt ALL questions
Start 12.50 pm
•
Complete your answers to Section 1 on the separate
Section 1 Answer Sheet
•
Complete your answers in black or blue pen
SCIENCE
SECTION 1
50 marks
S11
2003 SCT • SCIENCE • SECTION 1
BLANK PAGE
–2–
2003 SCT • SCIENCE • SECTION 1
Instructions for answering questions in Section 1
• Complete your answers in either black or blue pen.
• Multiple choice
Select the alternative A, B, C or D that best answers the question. Fill in the
response oval completely.
Sample:
2+4=
(A) 2
A
(B) 6
B
(C) 8
C
(D) 9
D
If you think you have made a mistake, put a cross through the incorrect answer
and fill in the new answer.
A
B
C
D
If you change your mind and have crossed out what you consider to be the
correct answer, then indicate the correct answer by writing the word correct and
drawing an arrow as follows.
correct
A
B
C
–3–
D
2003 SCT • SCIENCE • SECTION 1
1
What is the name of the solution represented by the formula HCl?
(A) Hydrochloric acid
(B)
Hydrogen chlorine
(C) Sulfur hydroxide
(D) Sulfuric acid
2
Which of the following is sometimes called a greenhouse gas?
(A) Carbon dioxide
(B)
Hydrogen
(C) Nitrogen
(D) Oxygen
3
The table presents some properties of six rocks.
High silica content
Low silica content
Small crystals
Obsidian
Basalt
Medium crystals
Microgranite
Dolerite
Large crystals
Granite
Gabbro
Which rock has large crystals and low silica content?
(A) Dolerite
(B)
Gabbro
(C) Granite
(D) Obsidian
4
Which of the following is associated with the ‘death’ explosion of a massive star?
(A) Asteroid
(B)
Comet
(C) Galaxy
(D) Supernova
–4–
2003 SCT • SCIENCE • SECTION 1
5
Biodiesel is a new type of diesel fuel made from plants such as
canola. The manufacturers of biodiesel promote its use as it is
considered to be environmentally friendly. This is because,
when biodiesel burns, it makes some products that are used
by plants.
What kind of argument is being used by the manufacturers to promote the use
of biodiesel?
(A) Economic
(B)
Ethical
(C) Legal
(D) Scientific
6
Which term names the change in the pathway of light as it passes from air into
the lens of a camera?
(A) Absorption
(B)
Interference
(C) Refraction
(D) Scattering
7
Which of these human activities is likely to have a positive impact on the natural
environment?
(A) Generating electricity using coal
(B)
Removing forest areas
(C) Recycling materials
(D) Using petrol-driven cars
–5–
2003 SCT • SCIENCE • SECTION 1
Use the graph to answer Questions 8 and 9.
Mass of solid particles measured in Earth’s
atmosphere (million tonnes)
The graph shows some of the sources of solid particles in the atmosphere.
2000
1500
1000
500
0
Industrial
emissions
Sea
salt
Soil
dust
Ash
Volcanic
dust
Other
particles
Sources of solid particles in the atmosphere
Merefield, John, ‘Inside Science’, New Scientist, 21 September 2002.
8
Which list ranks sources of solid particles in the atmosphere from greatest to
smallest?
(A) Ash, soil dust, sea salt, other particles
(B)
Sea salt, soil dust, ash, volcanic dust
(C) Industrial emissions, sea salt, ash, volcanic dust
(D) Volcanic dust, industrial emissions, ash, soil dust
9
What mass of solid particles in the atmosphere comes from soil dust?
(A) 250 million tonnes
(B)
300 million tonnes
(C) 375 million tonnes
(D) 425 million tonnes
–6–
2003 SCT • SCIENCE • SECTION 1
10
Which subatomic particle moves through a metal when the metal conducts
electricity?
(A) Electron
(B)
Neutron
(C) Nucleus
(D) Proton
Use the diagram to answer Questions 11 and 12.
The diagram shows pebbles of different sizes cemented together to form a rock.
X
Cementing
material
Y
Fossil
(Actual size)
11
How was this rock formed?
(A) By magma cooling underground
(B)
By lava cooling above the ground
(C) By heat and pressure under the ocean
(D) By compaction of sediment and chemical changes
12
What is the average of the lengths of pebbles X and Y in the sample?
(A) 1.0 cm
(B)
1.6 cm
(C) 2.2 cm
(D) 3.2 cm
–7–
2003 SCT • SCIENCE • SECTION 1
Use the newspaper article to answer Questions 13–15.
Giant squid ‘taking over the world’
Giant squid are taking over the world – well, at least the oceans – as
they are getting bigger. According to scientists, giant squid have
overtaken humans in terms of total biomass. That means they take up
more space on the planet than us. The reasons have been put down to
overfishing of other species and climate change.
Benson, Simon, 31 July 2002, article in The Daily Telegraph.
13
What is one reason given for the increase in the total biomass of giant squid?
(A) They have more predators.
(B)
Their body size has increased.
(C) The ocean temperatures have risen.
(D) They have a larger total biomass than humans.
14
‘Giant squid are taking over the world . . . The reasons have been put down to
overfishing of other species and climate change.’
How would scientists classify these reasons?
(A) Arguments
(B)
Conclusions
(C) Inferences
(D) Observations
15
Which of the following is the best reason why scientists should further
investigate this issue?
(A) Giant squid may kill too many humans.
(B)
Giant squid may overpopulate and become extinct.
(C) Giant squid may compete with humans for living space.
(D) Giant squid numbers may change the food webs on which humans depend.
–8–
2003 SCT • SCIENCE • SECTION 1
Use the following diagrams of simple machines to answer Questions 16 and 17. All
boxes have the same mass.
Force
K
L
Box
Box
Force
N
M
Force
Box
Force
Box
16
Which diagram represents a lever?
(A) K
(B)
L
(C) M
(D) N
17
Which machine requires the least force to raise the box?
(A) K
(B)
L
(C) M
(D) N
–9–
2003 SCT • SCIENCE • SECTION 1
Use the diagram to answer Questions 18–20.
The diagram illustrates the formation of a black hole. Objects in the diagram are not
drawn to scale.
Star forms from
a cloud of gas
and dust
5 million km radius;
star ‘burns’ hydrogen
for 10 million years
50 million km radius;
star ‘burns’ helium
for 1 million years
10 km radius;
black hole
Nuclear ‘burning’ ends; star
collapses, explodes and then
collapses again
700 million km radius;
star ‘burns’ carbon, neon,
oxygen, then silicon for
1000 years
Muir, Hazel, ‘Inside Science’, New Scientist, 19 October 2002.
18
Which element must be present in the cloud of gas and dust for a star to form?
(A) Carbon
(B)
Helium
(C) Hydrogen
(D) Oxygen
19
How many times bigger is the radius of the star when it ‘burns’ helium than when
it ‘burns’ hydrogen?
(A) 2
(B)
10
(C) 14
(D) 140
20
Which of the following correctly compares the ‘burning’ in stars with the
burning of fossil fuels?
‘Burning’ in stars
Burning of fossil fuels
(A)
Atoms rearrange
Atoms do not rearrange
(B)
Carbon atoms combine with
oxygen
Carbon atoms do not combine
with oxygen
(C)
Carbon dioxide is produced
Carbon dioxide is not produced
(D)
Nuclei of atoms interact
Nuclei of atoms do not interact
– 10 –
2003 SCT • SCIENCE • SECTION 1
21
Jamie and Joanne mixed two clear, colourless liquids. A solid formed as the
liquids mixed. What type of reaction were they observing?
(A) Absorption
(B)
Combustion
(C) Corrosion
(D) Precipitation
Use the following information to answer Questions 22 and 23.
AIDS virus resistant
Miracle drugs have transformed AIDS into a disease
that can be much more successfully managed.
The virus that causes AIDS is rapidly developing
resistance to anti-retroviral drugs designed to
prolong the lives of those affected by the disease.
22
According to the article, what causes AIDS?
(A) Anti-retrovirus
(B)
Bacterium
(C) Fungus
(D) Virus
23
What has caused the increase in resistance to anti-retroviral drugs?
(A) Acquired characteristics
(B)
Cloning
(C) Natural selection
(D) Virulence
– 11 –
2003 SCT • SCIENCE • SECTION 1
24
What happens to atoms during a decomposition reaction?
(A) They are created.
(B)
They are destroyed.
(C) They are rearranged to form more substances.
(D) They are rearranged to form fewer substances.
Use the graph to answer Questions 25 and 26.
How Australia uses its energy
Key
Transport
Domestic
Agriculture
Other industries
Mining
25
Approximately what percentage of the total energy is used by mining?
(A) 10%
(B)
15%
(C) 30%
(D) 60%
26
Which of the following combinations uses the most energy?
(A) Agriculture and domestic
(B)
Agriculture and transport
(C) Domestic and mining
(D) Domestic and other industries
– 12 –
2003 SCT • SCIENCE • SECTION 1
27
Where are you most likely to find DNA?
(A) Field mushroom
(B)
Mineral crystal
(C) Natural gas
(D) Snail shell
28
The diagram illustrates how the African and South American continents seem to
‘fit’ against each other.
Africa
South
America
Which theory best explains this ‘fit’?
(A) Big Bang
(B)
Evolution
(C) Natural selection
(D) Plate tectonics
– 13 –
2003 SCT • SCIENCE • SECTION 1
Use the diagram to answer Questions 29–31.
The diagram illustrates the fossils found at four different locations W, X, Y and Z.
W
29
X
Z
Y
Which of these fossils is younger than fossil
?
(A)
(B)
(C)
(D)
30
At which location was the oldest fossil found?
(A) W
(B)
X
(C) Y
(D) Z
31
In which of the following environments would these fossils most likely have
formed?
(A) Coastal lake
(B)
Eucalyptus forest
(C) Fast-flowing river
(D) Sandy desert
– 14 –
2003 SCT • SCIENCE • SECTION 1
Use the diagram to answer Questions 32 and 33.
The following tracks were found at the scene of a road accident.
Key
Dog
Kangaroo
Car
Motorbike
32
Which of the following lists the order in which the tracks were made?
(A) Dog, kangaroo, motorbike, car
(B)
Dog, motorbike, car, kangaroo
(C) Motorbike, dog, car, kangaroo
(D) Motorbike, kangaroo, dog, car
33
What could be inferred from the tracks?
(A) The dog was frightened by the car.
(B)
The kangaroo was being chased by the dog.
(C) The rider of the motorbike was driving unsafely.
(D) The car crossed from one lane of the road to the other lane.
– 15 –
2003 SCT • SCIENCE • SECTION 1
34
A car leaking oil at a constant rate left spots on the road as shown in the diagram.
West
East
Which statement describes the motion of the car as it moved from west to east?
(A) The car was accelerating.
(B)
The car was slowing down.
(C) The car was not accelerating.
(D) The car was moving at a constant speed.
35
The diagram shows the arrangement of particles in brittle and non-brittle materials.
Non-brittle
Brittle
From the diagram, what may be one cause of brittleness in materials?
(A) The size of the particles
(B)
The shape of the particles
(C) The space between the particles
(D) The way the particles are held together
– 16 –
2003 SCT • SCIENCE • SECTION 1
36
Why does an astronaut weigh less on the Moon than on Earth?
(A) There is no air on the Moon.
(B)
The astronaut is out in space.
(C) The Moon has less mass than Earth.
(D) The Moon is further away from the Sun than it is from Earth.
Use the diagrams to answer Questions 37 and 38.
P
37
Q
R
S
Which diagram best represents the Watson–Crick model of DNA?
(A) P
(B)
Q
(C) R
(D) S
38
What is one limitation of using the Watson–Crick model for DNA?
(A) The DNA model is too old.
(B)
Scientists do not agree on the DNA model.
(C) The DNA model oversimplifies DNA structure.
(D) Scientists cannot use the DNA model to make predictions.
– 17 –
2003 SCT • SCIENCE • SECTION 1
Use Diagrams 1 and 2 to answer Questions 39–43.
Diagram 1 represents the electromagnetic spectrum.
Diagram 1
Visible light
X-rays
Ultraviolet
Microwave
Infrared
Gamma rays
10–13
10–11
Radio
10–9
10–7
10–5
10–3
10–1
101
103
Wavelength (m)
Diagram 2 illustrates two electromagnetic waves Q and R, both drawn to the same
scale.
Diagram 2
W 60 m X
Q
Y
Z
R
39
Which type of radiation has the shortest wavelength?
(A) Gamma rays
(B)
Microwave
(C) Radio
(D) Visible light
– 18 –
2003 SCT • SCIENCE • SECTION 1
40
The distance from crest W to crest X of wave Q is 60 m. What is the distance from
crest Y to crest Z on wave R?
(A) 20 m
(B)
30 m
(C) 40 m
(D) 50 m
41
What type of wave is Q?
(A) Microwave
(B)
Radio
(C) Visible light
(D) X-rays
42
Which statement is correct for waves Q and R?
(A) Q carries more energy than R.
(B)
Q has more acceleration than R.
(C) Q has a greater frequency than R.
(D) Q has a longer wavelength than R.
43
Which statement about the speed of electromagnetic radiation is correct?
(A) All electromagnetic radiation travels at the speed of light.
(B)
All electromagnetic radiation travels at the speed of sound.
(C) Each type of electromagnetic radiation travels at a different speed.
(D) Electromagnetic radiation travels faster in our atmosphere than in outer
space.
– 19 –
2003 SCT • SCIENCE • SECTION 1
Use the diagram to answer Questions 44–46.
The diagram represents the geological time scale. Eras are divided into periods, and
some periods are divided into epochs. Ages are shown in millions of years before the
present (BP).
Eras
Cainozoic
0
68
225
Mesozoic
Palaeozoic
570
Periods
0
2.5
Quaternary
Tertiary
68
Epochs
0
2.5
7
Recent < 5000 years
Pleistocene
Pliocene
Cretaceous
Miocene
136
Jurassic
190
225
26
Triassic
Permian
Oligocene
38
280
Eocene
Carboniferous
Precambrian
345
Devonian
395
430
500
Cambrian
570
BP
44
Formation of
Earth’s crust
How long did the Devonian period last?
(A) 50 million years
(B)
54 million years
(C) 345 million years
(D) 395 million years
45
In which period is the Pliocene epoch?
(A) Cainozoic
(B)
Palaeocene
Silurian
Ordovician
4500
BP
54
Mesozoic
(C) Quaternary
(D) Tertiary
– 20 –
68
BP
2003 SCT • SCIENCE • SECTION 1
46
Which is the most recent?
(A) Mesozoic
(B)
Miocene
(C) Pleistocene
(D) Tertiary
47
Where do most of Earth’s earthquakes and volcanoes occur?
(A) At hot spots
(B)
At plate boundaries
(C) Along lines of latitude
(D) Along lines of magnetism
48
The diagrams illustrate grains in rocks drawn to different scales.
1 mm
2 mm
5 mm
10 mm
P
Q
R
S
Which rock has the largest grains?
(A) P
(B)
Q
(C) R
(D) S
49
A crash-test dummy without a seatbelt was in the front seat of a moving car.
During the crash-test the car hit a solid wall head-on.
Which statement best describes the motion of the dummy on impact?
(A) The dummy moved forward off the seat.
(B)
The dummy was pushed back into the seat.
(C) The dummy stayed in the same position.
(D) The dummy moved up and hit the roof of the car.
– 21 –
2003 SCT • SCIENCE • SECTION 1
50
Which diagram illustrates the movement of crust at a mid-ocean ridge?
(A)
Sea level
New oceanic crust
Contin
ent
Contin
tle
Man
ent
(B)
Partial melting
Sea level
Contin
ent
tle
ent
Partial melting
(C)
Sea level
ent
Partial melting
Sea level
(D)
tle
Contin
ent
tle
Man
New oceanic crust
Contin
Man
tle
Contin
ent
tle
Man
New oceanic crust
Contin
Man
tle
New oceanic crust
Contin
Man
Man
ent
Partial melting
Man
End of Section 1
Go on to Section 2
– 22 –
tle
2003 SCT • SCIENCE • SECTION 1
BLANK PAGE
– 23 –
2003 SCT • SCIENCE • SECTION 1
BLANK PAGE
– 24 –
© Board of Studies NSW 2003
Directions for Section 2
This section has FOUR parts
Part A
Questions
Part B
Questions
Part C
Questions
Part D
Questions
2003
SCHOOL
CERTIFICATE
TEST
51–60
61–62
63–64
65–66
(10 marks)
(14 marks)
(12 marks)
(14 marks)
•
Complete your answers to Section 2 Part A in the boxes
provided on the separate answer sheet
•
Complete your answers to Section 2 Parts B–D in the spaces
provided on pages 29 to 39
•
Write your Centre Number and Student Number at the top
of pages 29, 33 and 37
Instructions for answering questions in
Section 2 Part A
10 November
•
Completing the boxes
Write firmly and clearly. Your answer must be written from
left to right. Use block letters for words. Numbers must be
used for numerical answers. Decimal points and negative
signs must be clearly shown in separate boxes. Do NOT let
any part of the letter or number touch the sides of the answer
boxes.
SCIENCE
SECTION 2
50 marks
Sample 1:
–7 ÷ 2 = –
Sample 2:
How many days are in a week? 7
Sample 3:
What is the fifth month? M A Y
3
.
days
If you think you have made a mistake, put a line through the
incorrect answer and write the correct one above the box.
M A Y
J U N E
S12
5
– 25 –
2003 SCT • SCIENCE • SECTION 2 • PART A
PART A
Complete your answers to Questions 51–60 on the Section 2 Part A Answer Sheet.
Answer each question with ONE word only.
51
Name the component of an electric circuit represented by this symbol.
52
Name the organ that produces eggs in humans.
53
Complete the following general word equation.
acid + alkali → salt + .............................
54
The human body’s functions are coordinated by two main systems. One is the
endocrine system. Name the other system.
55
Name the section of a chromosome that carries information for a particular
characteristic.
56
Name the smallest unit of an element.
57
Litmus, phenolphthalein and some plant extracts are examples of chemicals that
change colour when added to acid or alkali.
Name this group of chemicals.
58
A common group of chemical compounds contains these substances:
H2CO3 , FeCO3 , Al2(CO3) 3 , CaCO3 .
Name this group of chemical compounds.
– 26 –
2003 SCT • SCIENCE • SECTION 2 • PART A
59
State the scientific name for substances that can combine in a chemical reaction.
60
Use the following key to answer the question.
1.
Rock fizzes with dilute acid
Rock does not fizz with dilute acid
............... limestone
............... go to 2
2.
Crystals can be seen without a hand lens
Crystals cannot be seen without a hand lens
............... go to 3
............... go to 4
3.
Small pebbles visible
Grains all look like sand
............... conglomerate
............... sandstone
4.
Rock will burn
Rock will not burn
............... go to 5
............... shale
5.
Can be scratched with a fingernail
Cannot be scratched with a fingernail
............... peat
............... coal
Kim wants to identify a rock. She cannot see any crystals with the naked eye. She
performs two tests on the rock and observes that it does not react with dilute acid
and it does not burn.
From the key, identify the rock.
End of Section 2 Part A
Go on to Part B
– 27 –
2003 SCT • SCIENCE • SECTION 2 • PART A
BLANK PAGE
– 28 –
© Board of Studies NSW 2003
2003 SCT • SCIENCE • SECTION 2 • PART B
CENTRE NUMBER
STUDENT NUMBER
PART B
• Write your Centre Number and Student Number at the top of this page
• Complete your answers in this booklet
Marks
Question 61 (4 marks)
Construct a table to indicate which of the following factors are biotic and
which are abiotic:
Bacteria, oxygen, temperature, humans, soil acidity, water, insects.
S13
– 29 –
4
2003 SCT • SCIENCE • SECTION 2 • PART B
Marks
Question 62 (10 marks)
The people of Xinbu, a village in China, are now generating
electricity and producing their own fertilisers using biogas
digesters.
A biogas digester is a place where plant and animal wastes decay
to produce heat and methane gas. The wastes used include
human and animal wastes, sugar, grass and bananas. The
methane gas produced is used for cooking, lighting and
generating electricity. The decayed wastes are then recycled as
fertilisers for their crops.
(a)
4
Use the information above to complete the flowchart.
Human and
animal wastes
...........................
...........................
...........................
...........................
Heat
...........................
Cooking and
lighting
Generator
...........................
– 30 –
Decayed
wastes
Fertilisers
2003 SCT • SCIENCE • SECTION 2 • PART B
Marks
Question 62 (continued)
(b)
Assess TWO impacts on the environment of using biogas digesters.
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End of Section 2 Part B
Go on to Part C
– 31 –
6
2003 SCT • SCIENCE • SECTION 2 • PART B
BLANK PAGE
– 32 –
© Board of Studies NSW 2003
2003 SCT • SCIENCE • SECTION 2 • PART C
CENTRE NUMBER
STUDENT NUMBER
PART C
• Write your Centre Number and Student Number at the top of this page
• Complete your answers in this booklet
Marks
Question 63 (6 marks)
Design an experimental investigation to test the following idea:
When you drop a heavy ball it will take the same amount of time to reach the
ground as a lighter ball.
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S14
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6
2003 SCT • SCIENCE • SECTION 2 • PART C
Question 64 (6 marks)
The diagrams illustrate the South Pacific Ocean under normal climate conditions and
under El Niño conditions.
Normal climate conditions
N
W
E
S
tr
a lia
Trade winds
Au
s
■ The warm waters
result in moist air
being carried onto
the mainland
causing rain
South
America
■ Strong trade winds
from South America keep
warm water near Australia
PACIFIC OCEAN
Warm upper
ocean layer
Cold lower
ocean layer
El Niño conditions
N
W
E
S
tr
a lia
Trade winds
Au
s
■ Central Pacific waters
warm, resulting in rain
area moving towards
South America
PACIFIC OCEAN
■ Weakened trade
winds allow warm
water to move
towards South America
Warm upper
ocean layer
Cold lower
ocean layer
Reproduced by permission of The Sun-Herald.
Question 64 continues on page 35
– 34 –
South
America
2003 SCT • SCIENCE • SECTION 2 • PART C
Marks
Question 64 (continued)
(a)
State ONE feature of the South Pacific Ocean that changes when normal
climate conditions are replaced by El Niño conditions.
1
...............................................................................................................................
...............................................................................................................................
(b)
Using information in the diagrams, explain why the east coast of
Australia is likely to experience drought during El Niño conditions.
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End of Section 2 Part C
Go on to Part D
– 35 –
5
2003 SCT • SCIENCE • SECTION 2 • PART C
BLANK PAGE
– 36 –
© Board of Studies NSW 2003
2003 SCT • SCIENCE • SECTION 2 • PART D
CENTRE NUMBER
STUDENT NUMBER
PART D
• Write your Centre Number and Student Number at the top of this page
• Complete your answers in this booklet
Question 65 (6 marks)
Marks
A nuclear reactor is nearing the end of its useful life. Many scientists and
doctors want a new reactor built to serve the needs of the community.
Some local residents and anti-nuclear groups want the nuclear facility
closed. They are concerned about a fault line in the area that could move
during an earthquake. They are also worried about wastes from the reactor
being washed into local creeks and waterways.
(a)
Explain why people would worry if wastes from the reactor washed into
waterways.
2
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...............................................................................................................................
...............................................................................................................................
(b)
Other than wastes, state ONE additional problem associated with nuclear
reactors.
1
...............................................................................................................................
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(c)
Propose a supporting argument that a doctor or a scientist might use to
justify the building of a new reactor.
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S15
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3
2003 SCT • SCIENCE • SECTION 2 • PART D
Question 66 (8 marks)
A team of students wished to investigate how quickly two different materials
absorb and release heat energy. They set up this experimental model. The light
bulb was switched on at the start of the experiment and turned off after
10 minutes.
Light bulb
Thermometer
Evaporating
basin
Dry sand
Water
The results table that the students created is shown below.
Temperature (°C)
Time
(minutes)
Dry sand
Water
Light bulb on
0
2
4
6
8
10
20.0
21.0
22.0
23.0
24.0
25.0
20.0
20.5
21.0
21.5
22.0
22.5
Light bulb off
12
14
16
18
20
26.0
27.0
27.0
26.5
26.0
23.0
23.0
23.0
23.0
23.0
Question 66 continues on page 39
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2003 SCT • SCIENCE • SECTION 2 • PART D
Marks
Question 66 (continued)
(a)
Name TWO variables that would have to be kept the same in this
experiment.
2
...............................................................................................................................
...............................................................................................................................
(b)
Graph the results for sand from the table.
0
2
4
6
8
4
10 12 14 16 18 20 22 24 26 28 30
Time (minutes)
(c)
State ONE trend that is shown in your graph.
1
...............................................................................................................................
...............................................................................................................................
(d)
Use your graph to predict the sand temperature 20 minutes after the
light bulb was turned off.
...............................................................................................................................
End of test
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2003 SCT • SCIENCE • SECTION 2 • PART D
BLANK PAGE
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© Board of Studies NSW 2003