PHYSICS FORM 4 | CHAPTER 1
Chapter 1: Measurement
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Figure 1.1 shows examples of measurements involving physical quantities
1.
to determind the value of physical quantity.
Measurement is ________________________________________________________________________________
Can you identify the base quantities
in Figure 1.2?
Length
Time
Mass
Temperature
Figure 1.2 Physical quantities
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PHYSICS FORM 4 | CHAPTER 1
2.
A physical quantity must be stated in magnitude with its unit.
3.
Identify Physical quantities, Magnitude, Units and Measuring instrument from the
statements below. Write them into the table below
A
B
C
D
E
F
Ismail weigh a wooden block that has mass of 500 gram using a lever beam balance.
Ong Beng Hock measures the length of a building which is 100 meter long using a
measuring tape.
Siew Mei measures her body’s temperature using a digital thermometer and obtains
38C.
Bathumalai determines the volume of water using a measuring cylinder and obtains
150 milliliter.
Hanisah measures the diameter of a wire which is 1.26 millimeter using a
micrometer screw gauge.
Vinisha takes the time of 20 oscillations of a pendulum using a stopwatch and
obtains 24.6 seconds.
Statement Physical quantity
mass
A
B
C
D
E
F
length
temperature
volume
diameter
time
Metric Unit While and Imperial Unit
Magnitude
500
100
38
150
1.26
20
Unit
gram
meter
celcius
mililiter
mililiter
second
Measuring instrument
lever
measuring tape
digital thermometer
measuring clylinder
micrometer screw gauge
stopwatch
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PHYSICS FORM 4 | CHAPTER 1
Metric unit
Imperial unit
Metre, kilometre, gram, kilogram, seconds.
Yard, inch, foot, mile, gallon
Metric system that represents one single unit
for any physical quantity that is used by all
countries.
Imperial unit is known as a
measurement that has been used in
Britain and United States.
Base Quantities and Derived Quantities
Identify base quantities and derived quantity from the equation below.
(a)
Volume = length x length x length
length
Base quantity = _________________
(b)
(c)
volume
Derived quantity = _________________
Area = length x length
Base quantity = _________________
length
area
Derived quantity = _________________
Density =
mass
lenght
Base quantity = (i) _________________
(ii) ____________________
4.
5.
density
Derived quantity = _________________
What is a base quantity?
cannot be derrived from other quantity
______________________________________________________________________________________________
What is derived quantity?
Quantity can be dirived by physical quantity through multi and division
_____________________________________________________________________________________________
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PHYSICS FORM 4 | CHAPTER 1
Table 1.1 Base quantities and their respective S.I. units and symbols
Describing Derived Quantities in Terms of Base Quantities and S.I. Base Units
A derived quantity is related to the base quantities through a formula.
To discuss derived quantities in terms of base quantities and S.I. base units.
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PHYSICS FORM 4 | CHAPTER 1
Scalar Quantities and Vector Quantities
Read the statements below to make a generalisation on scalar quantity and vector quantity.
Then classify the physical quantities into scalar quantity and vector quantity in the table
below.
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PHYSICS FORM 4 | CHAPTER 1
A
Hasan walks with a velocity of 2 m s-1 due West.
B
Husna runs with a speed of 5 m s-1.
C
Sangeetha walks along a displacement of 40 m due North.
D
Jason runs along a distance of 30 m.
E
Chin Wen push the table downwards with a force of 30 N.
F
Wen Dee has a mass of 40 kg.
Scalar Quantity
Vector Quantity
1.
Define scalar quantity
2.
____________________________________________________________________________________________
Define vector quantity
____________________________________________________________________________________________
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PHYSICS FORM 4 | CHAPTER 1
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PHYSICS FORM 4 | CHAPTER 1
Name: ___________________________________
Date: ______________
BASE AND DERIVED QUANTITIES
S K X P Q A N U A T
P M R T P K
A Y Q D G K Q Q
L C
L
L
L
K C R B
J
B P
I
L W Y
T
I
I
Y W V E
T E R E P M A G
I
N O A V
L
Z C
B N E S K R C X M
U R M V M E V E V B C V B M S D X E R H
I
P E B
M M L
E D V R H
L N E R U T A R E P M E
T
Z D T
I
T
J
N T V
I
B S V Q M F M B M A D S
L H N
N
I
K R A B E R E M K V Q R N A Q L
L
T
L
T
T D H
L
O D E C E R G O B M G D R Q W T
Y N O N W Q O Q
U R B
W R M E V G X P
S X
I
L
Y D H S K B U L
F U T
K P
Z X X U Z
A
Z
A H N
I
T O Y M M L O R N T
Z U A M Q U B O G W Q P E C Q L
N Z N U K
I
D Y
J
E Q Z U P
I
V G
P U F
N C B K K
L
J
S G W H
I
W B
J
I
L
T
A P G S
L
F
L
I
I
U H O L
N G Y Q G
I
F D T
Z Q A S
I
T G V N
F R F
Z R G Q B D O C G F P Y O
L
T
I
N
F K C O N M D
T C F B E X
I
F O R
T C A
N D L
I
G P Q U P B N S
R
K G T
T D K W G
A D Q Q S U W E U C C
Y U V
U M X V A P
F
D M W N S E
O O R E M P
T Q B R O C V E E Z
I
Z
L D N O T Y Q D Y Q E U M S O C
T G Z P P A U U C E X V H S U
V R
R K U
A
L
T Y
T S K E C T U A
I
J
L
L
K U M C
F X C K M H Q P R X A E P U X K
L R P K M N H U M Z C A N D E
L
A D B W O T
B D
U W L G Y P Y O
L G W K Y A E E R G D N O C E S
K X Y M N V N
V
I
L
E K Q M T G A Y K C D X M T
MOLE
CANDELA
AMPERE
KELVIN
SECOND
KILOGRAM
METRE
LUMINOUS
INTENSITY
ELECTRIC CURRENT
TEMPERATURE
TIME
MASS
LENGTH
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