This document contains a practice exam for a science test. It includes 33 multiple choice questions covering topics like units, graphs, measurements, and experimental errors. It also includes diagrams of various measuring instruments and asks students to interpret readings, identify parts, and determine accuracy. The second part of the exam contains additional questions involving measurements, precision, accuracy, and identifying instruments.

1. 1
SCORE A
EXCEL in SPM
Paper 1
Choose the best option for each question.
1. The unit for specific heat capacity is J kg-1
K-1
.
A possible formula for finding the specific heat
capacity.
A.
eTemperaturxMass
Power
B.
HeatxMass
eTemperatur
C.
eTemperaturxMass
Heat
D.
TimexMass
Heat
2. Diagram 1 shows the time measured y a
stopwatch for the oscillation of a pendulum.
What is the time measured by the stopwatch.
A. 30.7 s
B. 32.0 s
C. 32.5 s
D. 33.0 s
3. Diagram 2 shows the position of the eye when a
student is taking the reading of the volume of
water in a measuring cylinder.
This position will help to overcome
A. random error
B. parallax error
C. zero error
D. systematic error
4. Diagram 1 shows the scale of a vernier
callipers.
What is the reading of the callipers?
A. 3.03 cm
B. 3.13 cm
C. 3.30 cm
D. 3.43 cm
5. Which of the following shooting marks shows
that the shooter is accurate but inconsistence?
6. A car is travelling at a speed of 80 km h-1
. What
is the speed in cms-1
?
A. 2.22 x 10-1
B. 2.22 x 102
C. 2.22 x 103
D. 2.22 x 104
7. Which physical quantity has the correct Si unit?
Physical quantity SI unit
A Mass Gram
B Time Minute
C Temperature Kelvin
D Current Coulomb

2. 2
8. Diagram 1 is a graph which shows the
relationship between s and t.
Which of the following relationship is correct?
A. s = 8t + 16
B. s = 16t + 8
C. s = 2t + 16
D. s = -2t + 16
9. 500 km is equivalent to
A. 5 x 102
m
B. 5 x 103
m
C. 5 x 104
m
D. 5 x 105
m
10. Diagram 2 shows the velocity-time graph for the
motion of an object.
If the acceleration of the object is given by the
gradient of the graph, calculate the acceleration
of the object.
A. 0.12 m s-2
B. 0.25 m s-2
C. 0.50 m s-2
D. 1.20 m s-2
E. 3.00 m s-2
11. Base quantities are quantities that
A. are scalar only
B. use SI units only
C. are in the simplest form
D. cannot be derived from other quantities
12. Which of the following is true?
A. 1 m = 1000 km
B. 1 ms = 0.001 s
C. 1 MB = 1000 GB
D. 1 nm = 0.001 pm
13. A student takes five readings when measuring
the length of a nail. If the length of the nail is
2.0 cm, which of the following shows that the
readings are precise but not accurate?
14. Diagram 1 shows a wire winding round a pencil
to measure its diameter by using a ruler.
The diameter of the wire is
A. 0.08 cm
B. 0.09 cm
C. 0.80 cm
D. 0.90 cm
15. Which of the following represents the radio
frequency of 98.1 MHz?
A. 9.81 x 10-3
Hz
B. 9.81 x 10-1
Hz
C. 9.81 x 105
Hz
D. 9.81 x 107
Hz
16. Diagram 2 shows the graph of velocity, v against
time, t.
Which of the following relationship is correct?
A. v = 10t
B. v = 2t + 10
C. v = -2t + 10
D. v = -5t + 10

3. 3
17. The diagram shows the reading of a micrometer
when the spindle is completely closed. What is
the zero error of the micrometer screw gauge?
A. -0.02
B. +0.02
C. -0.48
D. +0.48
18. The table shows the results obtained from an
experiment to examine the resistivity of a wire.
Which statement is true about the experiment?
A. The smallest scale on the ammeter is 0.02
A
B. The smallest scale on the voltmeter is 0.1
V.
C. The length of the wire is the manipulate
variable.
D. The diameter of the wire is measured with
a micrometer screw gauge.
19. Choose the correct matching of physical quantity
with its SI unit.
A. Period – second
B. Time – minute
C. Length – centimetre
D. Electrical charge – ampere
20. Which step below can reduce parallax error
while taking the reading from an ammeter?
A. Use an ammeter with a smaller scale.
B. Take repeated readings and find the
average value.
C. Use a magnifying lens to read the reading
from the ammeter.
D. Take the reading when the pointer
coincides with the image of the mirror
underneath.
21. Which physical quantities below is base
quantity?
A. Acceleration
B. Mass
C. Energy
D. Velocity
22. State the error in measurement which can be
reduced by taking a larger number of
measurements and the average reading.
A. Zero error
B. Systematic error
C. Random error
D. End error
23. Which unit below is used to measure
momentum?
A. N
B. N ms-1
C. kg m s-1
D. kg m s-2
24. Which graph below shows that y is directly
proportional to x?
25. Which measuring instrument is suitable to
measure the width of school physical textbook?
A. Micro screw gauge
B. Vernier callipers
C. Meter rule
26. Why is a micrometer not suitable for measuring
the length of a wire?
A. The wire cannot be straightened
B. The wire is usually more than 25 cm
C. It is not necessary to measure length to
such an accuracy.
D. A micrometer gives a reading of there
decimal places.

4. 4
27. If the length of field is 500 m and the width is
200 m, what is the area of the field in scientific
notation?
A. 100 000 m
B. 100 000 m2
C. 10 x 104
m2
D. 1.0 x 105
m2
28. Which quantity is correctly classified?
29. Which derived quantity is obtained by
multiplying two base quantities?
A. Dencity
B. Acceleration
C. Area
D. Velocity
30. Which pair of physical quantities have the same
unit?
A. Current and charges
B. Voltage and emf
C. Energy and power
D. Work and force
31. Diagram 1 shows a micrometer screw gauge.
What is the reading of the micrometer shown?
A. 5.24 mm
B. 5.64 mm
C. 7.14 mm
D. 7.64 mm
32. Which experimental technique reduces the
systematic error of a quantity investigated?
A. Adjusting an ammeter to remove its zero
error before measuring a current.
B. Measuring the diameter of a wire
repeatedly and calculating the average
value.
C. Timing a large number of oscillations to
find a period.
33. The period of oscillation for an object is given as
T = (km)1/2
where T = period, m = mass, k =
constant.
What is the derived unit for k?
A. kg s2
B. kg-1
s 2
C. kg s
D. kg-2
s-1
34. Express 1000000 cm2
in SI unit.
A. 106
cm2
B. 1 x 106
cm2
C. 100 m2
D. 1 x 106
m2
35. Which expression shows the relationship
between the base quantities for density?
A.
time
lengthxmass
B.
massxlength
time
C.
lengthxlengthxlength
mass
D.
timexlengthxlength
lengthxmass
36. Which of the experimental errors is a systematic
error?
A. A stopwatch running too fast.
B. The zero point of a metre ruler is not
accurate.
C. Variations in measurements of a
pendulum’s length.
D. Zero error of a micrometre screw gauge
37. Kasim, Ah Choon, Muthu and David are
throwing four darts each at the target board. The
positions of the darts are shown in A, B, C and
D below. Whose throws are not accurate but
precise?

5. 5
Paper 2
Section A
1. Diagram 1.1 shows a section of a ruler.
(a) What is the sensitivity of the ruler?
____________________________
[1 mark]
(b) Two groups of students used the ruler to measure the length of a rod. The measurements they
obtained are shown in Table 1.
(i) Calculate the average of each group.
Average of group A = ____________ Average of group B = ______________
Group A 12.35 cm 12.25 cm 12.40 cm 12.20 cm
Group B 12.80 cm 12.15 cm 12.35 cm 12.55 cm
(ii) If the actual length of the road is 12.40 cm, which group is more accurate in their
measurements?
_____________________________________________________________________
[1 mark]
2. Diagram 1.1 shows a measuring instrument X.
(a) What is instrument X?
________________________________
[1 mark]
(b) Name the part labelled Y.
________________________________
[1 mark]
(c) What is the accuracy of instrument X?
___________________________________________________________________________
[1 mark]
(d) Determine the size of the object in Diagram 1.1 if instrument X has zero error of +0.03 mm.

6. 6
3. Diagram 1.1 shows a micrometer screw gauge being used to measure the diameter of a ball bearing.
(a) (i) Name the part labelled X.
_____________________
[1 mark]
(ii) What is the function of X?
_____________________________________________________________________
[1 mark]
(b) What is the radius of the ball bearing?
[2 marks]
4. Diagram 1.1 shows a meter rule being used to measure the diameter of test tube.
(a) What is the value of the smallest division of the metre rule?
________________________________________________
[1 mark]
(b) State one type of error that must be avoided when taking the reading.
_______________________________________________________
[1 mark]
(c) What is the reading of the external radius of the test tube?
___________________________________________________________________________
[1 mark]
(d) What is the measuring instrument t that is more accurate to measure the external diameter of
the test tube?
[1 mark]
5. Diagram 1.1 shows two measuring scales P and Q.
(a) Name the physical quantity measured by the measuring scales.
___________________________________________________________________________

7. 7
[1 mark]
(b) (i) What is the value of the smallest division of measuring scale P?
___________________________________________________
[1 mark]
(ii) What is the value of the smallest division of measuring scale Q?
___________________________________________________
[1 mark]
(c) Which measuring scale is more sensitive?
___________________________________________________________________________
[1 makr]
6. Photographs 1(a) and (b) show two types of ammeters.
Photographs 1(a) and (b)
(a) State the physical quantity that these ammeters can measure.
___________________________________________________________________________
[1 mark]
(b) (i) Which ammeter is more sensitive?
____________________________
[1 mark]
(ii) State one reason for your answer in 1(b)(i).
_____________________________________________________________________
[1 mark]
(c) When an ammeter is not connected to any circuit, it is found that the pointer to the zero mark.
(i) What type of error is this when the ammeter is used to measure current?
_____________________________________________________________________
[1 mark]
(ii) How can the error are corrected when a student has taken the measurement for
current?
_____________________________________________________________________
[1 mark]

8. 8
7. Photographs 1.1 and 1.2 show two instruments used by students in the laboratory.
(a) (i) Name the instruments in Photograph 1.1
________________________________
[1 mark]
(ii) For the instruments in photograph 1.2, what is the function of the ratchet?
_____________________________________________________________________
[1 mark]
(iii) What is the sensitivity of the apparatus in Photograph 1.2?
______________________________________________
[1 mark]
(b) Between the instruments in photographs 1.1 and 1.2
(i) Which instruments is more sensitive?
______________________________
[1 mark]
(ii) State one reason for your answer in 1(b)(i).
_____________________________________________________________________
[1 mark]
8. Look at Diagram 4.1 below. The result of the darts thrown by a boy D is shown by ‘X’.
(a) Describe the result using the concept of consistency and accuracy.
___________________________________________________________________________
___________________________________________________________________________
[2 marks]
(b) Thomas, Aina and Laveen also take part in the same darts competition.
The result show that,
(i) Thomas is consistence but not accurate,
(ii) Ainaa is inaccurate and inconsistent
(iii) Laveen is accurate and consistent
Use the symbol “X” to represent a dart mark on the target board to show the possible
positions of the four darts thrown by each of them.

9. 9
[3 marks]
(c) Suggest two instruments that you have used in the laboratory that may be consistent but not
accurate.
___________________________________________________________________________
___________________________________________________________________________
[3 marks]