Carlingford High School
NSW INDEPENDENT TRIAL EXAMS – 2009
SCIENCE SCHOOL CERTIFICATE TRIAL EXAMINATION
MARKING GUIDELINES
Section I
Part A
1
C
2
A
3
D
4
D
5
A
6
C
7
D
8
B
9
B
10
A
11
D
12
B
13
B
14
D
15
C
16
A
17
B
18
B
19
A
20
B
21
C
22
B
23
B
24
D
25
A
26
D
27
A
28
D
29
D
30
B
31
D
32
B
33
D
34
A
35
A
36
C
37
B
38
D
39
C
40
A
41
C
42
C
43
A
44
B
45
D
46
C
47
C
48
B
49
D
50
A
Part B
Qu
Criteria
51 Refraction.
52 102 dB.
53 20 or 21.
54 Renewable
55 Microwaves.
56 Acids.
57 Sulfuric Acid.
58 Earthquake.
59 Technology.
60 Hydrogen.
Marks
1
1
1
1
1
1
1
1
1
1
Section II
Question 61
Part Criteria
The concentration of chemical P (allow concentration).
(a)
The concentration of chemical Q. The volume of each solution used.
(b)
Any suitable aim – for example, to see if the rate of reaction between
(c)
solutions of chemicals P and Q is affected by the concentration of P.
Blue.
(d)
A higher concentration of P causes the reaction to occur more quickly.
(e)
Question 62(a)
Criteria
Draws a diagram showing the conical flask containing either water or sand, and includes
a stopper with a thermometer through its centre and the bulb of the thermometer in the
middle of the air space in the flask with at least FOUR labels.
Draws a diagram without ONE component of the apparatus OR fails to label FOUR
parts.
Draws a diagram without TWO components of the apparatus OR fails to label FOUR
parts.
Draws a diagram missing THREE components of the apparatus OR fails to label FOUR
parts.
Marks
1
1
1
1
2
Marks
4
3
2
1
NSW Independent Trial Exams 2009 –Science School Certificate Trial Examination: Marking Criteria - Page 1
Sample answer:
Thermometer
Stopper
Conical flask
Air
Sand
Temperature (oC)
Question 62(b)
Draws graph with correct scales, labels and units on both axes, plots all points and
draws a curve of best fit.
Complete all except ONE of the above.
Complete all except TWO of the above.
Complete all except THREE of the above.
Sample answer:
4
3
2
1
40
30
20
2
4
6
8
10
Time (min)
12
14
16
18
20
Question 62(c)
States that there is no evidence and justifies statement.
2
States that there is no evidence to support the story without further explanation.
1
Sample answer: There is no evidence in these results to support the idea in this story. The experimental
results do not measure temperature change with change in altitude which would be required to either
support or deny this proposal.
NSW Independent Trial Exams 2009 –Science School Certificate Trial Examination: Marking Criteria - Page 2
Question 63
Provides an appropriate scientific model or theory and suggests one problem or
4+1
controversy the model or theory may contain in a clear and well-structured answer.
Provides an appropriate scientific model or theory in a less clear way and/or without
3-4
suggesting a problem or controversy.
Provides a scientific model or theory in a simple or rudimentary way.
1-2
Suggested answer: The initial model of Universe, put forward in ancient times had the Earth as its centre and
all other heavenly objects revolving around it. This model was known as Geocentric Model and was
proposed by Aristotle. This theory was based on naked eye observations only as no
instrumentation/equipment existed. This model was able to explain the size or phases of the Moon and
changes in the brightness of planets.
The controversy about this model was the Earth being at the centre of the universe and motionless. With
slight modification, this model was accepted and adopted by the Roman Church as the correct picture of the
universe. This model predominated over all other models for about 1400 years.
Question 64
ONE positive and ONE negative impact on society of one identified technology are
4
discussed in a clear and well structured way.
Identifies ONE negative and ONE positive impact on society and discusses only one
3
impact.
discusses only ONE impact on society.
2
States positive and negative impact on society but fails to discuss the question.
1
Sample answer: Computers have impacted positively on society in terms of its unlimited applications in
business ( online business ), banking ( online ), research and education. Through the network of computers,
we have been able to do trade and business conveniently and efficiently. This gives us more time to do other
tasks.
One negative impact of computers on society is that many unskilled workers have lost their jobs. Young
children are spending too much time on playing computer games which may impact negatively on their
health due to X-rays emitted by the computers. Or Financial fraud, misuse of computers in contacting young
children are some of many negative impacts of computers on society.
Question 65
Criteria
Marks
States Newton’s Law clearly, applies the law to a person in a moving car and
3
describes the consequences of no force by a seatbelt.
States Newton’s Law AND applies the law to a person in a moving car OR describes
2
the consequences of no force by a seatbelt.
States Newton’s Law OR applies the law to a person in a moving car OR describes
1
the consequences of no force by a seatbelt.
Sample answer: Newton stated that objects remain stationary or continue with constant speed in the same
direction unless acted on by a force. When the brakes stop a car, people need to have a force exerted on them
in the opposite direction to the car’s motion. This force is needed to slow their forward motion and prevent
them from continuing to move forward and hit the windscreen or maybe fly through it.
NSW Independent Trial Exams 2009 –Science School Certificate Trial Examination: Marking Criteria - Page 3
Question 66(a)
Criteria
Identifies ONE factor.
Sample answer: 50 g of carbohydrate in the food sample.
Marks
1
Question 66(b)
Criteria
Marks
Justifies why marathon runners should low GI food.
2
Identifies that marathon runners should low GI food.
1
Sample answer: Marathon runners should eat low GI foods so that the blood glucose level does not drop
quickly during the long race. High GI food would supply a sudden burst of energy but the runner would
have insufficient energy to help complete the marathon.
Question 66(c)
Criteria
Provides the correct answer.
Sample answer: 200 g.
Marks
1
Question 67(a)
Criteria
Lists THREE renewable energy sources.
Lists TWO renewable energy sources.
Sample answer: Hydroelectric energy, solar energy, tidal energy.
Marks
2
1
Question 67(b)
Criteria
Provides correct answer.
Sample answer: Photosynthesis.
Marks
1
Question 67(c)
Criteria
Marks
Identifies TWO reasons for the increase in CO2 levels.
2
Identifies ONE reason for the increase in CO2 levels.
1
Sample answer: The increase in CO2 levels followed the industrial revolution when machinery was
introduced and the electrical energy was produced using the heat from the burning of fossil fuels. The
demand for manufactured goods has meant a continuing demand for electricity and increased usage of
electricity in homes. As well, the increase in vehicle transport using fossil fuels has contributed to the
increasing CO2 levels.
Question 67(d)
Criteria
Marks
Identifies the reason for the difference and provides an example.
2
Identifies the reason for the difference OR provides an example.
1
Sample answer: The differences in the graphs can be explained by the difference in the energy sources used
for each activity. Water heating is done in some home using solar energy so this reduces the emission of
carbon dioxide.
NSW Independent Trial Exams 2009 –Science School Certificate Trial Examination: Marking Criteria - Page 4
NSW INDEPENDENT TRIAL EXAMS – 2009
SCIENCE SCHOOL CERTIFICATE TRIAL EXAMINATION
MAPPING GRID
Question
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Marks
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Content
5.7.1 a
5.7.2 a
4/5.13.3c
4/5.17g
5.8.2c
5.9.1c
4/5.18e
5.10b
5.8.1d
5.6.1c
5.6.1b
4/5.16d
5.7.3 a
5.7.3 e
5.7.3 f, 4/5.13.1 f
4/5.13.3 c
4/5.13.2a
4/5.18a
5.10c
5.10b
5.7.2 b
5.7.1a, 5.7.2 b
5.7.2 b, 4/5.16
5.8.4c
5.8.4b
5.9.4a
5.9.4a
5.11.1b
5.9.4e
5.7.3 d
5.7.3 e
5.11.1a
5.8.3b
5.9.4d
4/5.19f, 5.6.2c
5.6.3d
4/5.16 c
4/5.16 c
5.9.3c
5.3d
5.6.1b
4/5.4b
4/5.16c, 4/5.21 a
4/5.16c
4/5.13.1a
4/5.17c
4/5.16b,c
4/5.17b
Syllabus
Outcomes
5.7
5.7
4/5.13
4/5.17
5.8
5.9
4/5.18
5.1
5.8
5.6
5.1
4/5.16
5.7
5.7
5.7
5.13
4/5.13
4/5.18
5.10
5.1
5.7
5.7
5.11
5.8
5.8
5.9
5.9
5.11
5.9
5.7
5.7
5.11
5.8
5.9
4/5.19, 5.6
5.6
4/5.16
4/5.16
5.9
5.3
5.6
4/5.4
4/5.16, 21
4/5.16
4/5.13
4/5.17
14/5.16
4/5.17
K/S
K
K
S
S
K
K
S
K
K
K
K
S
K
K
K-S
S
S
S
S/K
K
K
K
S
K
K
K
K
K
K
K
K
K
K
K
K/S
K
S
S
K
K
K
K
S
S
S
K
S
S
Targeted
Bands
2-3
2-3
2-3
4-5
2-3
2-3
2-3
2-3
2-3
3-4
2-3
2-3
3-4
3-4
3-4
2-3
3-4
3-4
3-4
3-4
3-4
3-4
4-5
3-4
3-4
4-5
3-4
3-4
3-4
4-5
4-5
4-5
4-5
5-6
4-5
4-5
3-4
4-5
4-5
4-5
5-6
5-6
2-3
3-4
5-6
4-5
3-4
5-6
NSW Independent Trial Exams 2009 –Science School Certificate Trial Examination: Marking Criteria - Page 5
MAPPING GRID - continued
49
50
51
52
53
54
55
56
57
58
59
60
61(a)
61(b)
61(c)
62(a)
62(b)
62(c)
63
64
65
66(a)
66(b)
66(c)
67(a)
67(b)
67(c)
67(d)
67(e)
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
4
4
2
5
4
3
1
2
1
2
1
2
1
2
4/5.16c
5.10c
5.6.4a
4/5.16c
4/5.16c
5.11.1
5.12a
5.7.3b
5.7.3d
5.9.4f
5.12
5.9.3b
4/5.16c, 17f
4/5.16c, 17f
4/5.19d
4/5.183, 4/5.16c
4/5.18f
4/5.19b
4/5.1c
5.12
5.6.2c, 4/5.18a
4/5.13.a
4/5.19g
4/5.18d
4.11d
4.10c
4/5.19g
4/5.16c
4/5.17g
4/5.16
5.10
5.6.4
4/5.16
4/5.16
5.11
5.12
5.7
5.7
5.9.4
5.12
6.9
4/5.16,17
4/5.16,17
4/5.19
4/5.16, 4/5.18
4/5.18
4/5.19
4/5.1
5.12
5.6, 4/5.18
4/5.13
4/5.19
4/5/18
4.11
4.10
4/5.19
4/5.16
4/5.17
S
S
K
K
K
K
K
K
K
K
K
K
S
S
S
S
S
S
K
K
K/S
S
S
S
K
K
S
S
S
3-4
3-4
4-5
3-4
5-6
3-4
2-3
2-3
3-4
2-3
3-4
3-4
2-3
3-4
5-6
2-4
2-4
5-6
4-6
3-6
3-5
2-3
3-4
4-5
2-3
2-3
3-4
4-5
5-6
NSW Independent Trial Exams 2009 –Science School Certificate Trial Examination: Marking Criteria - Page 6