Transcript Paper 2 - KS Thong's Blog | PHYSICS IS INTERESTING

WELCOME TO WORKSHOP 2012
PHYSICS PAPER 2
(PART C)
PHYSICS IS FANTASTIC
Paper 2 ( ESSAY )
Part C  20 marks
( Choosing) => 10
ANALYSIS- PASS YEARS ESSAY QUESTIONS
SECTION C: ESSAY( Choose One)
30 minutes
Q11 Topic Form 4
: Knowledge
: Understanding
: Application (Quantitative)
: Decision Making
• Q12 Topic Form 5
: Knowledge
: Understanding
: Application (Quantitative)
: Decision Making
(1m)
(4m)
(5m)
(10m)
(1m)
(4m)
(5m)
(10m)
Tahun
Q9
Analisis
spm Q11
Q10
Q12
2004
Light /mirror
pericope.
.Radioactive
Use of radioactive –factory
Heat
( food container)
Electromagnet/
Electronic
Transformer / diod
2005
Pressure Archimedes
( hydrometer)
Waves
(Location for jetty / retaining
wall)
Light Lens.(presbyopia)
Electomagnet
(transformer- transmission
electricity)
2006
Light / Lens(astronomic
telescope )
Electromagnet
(motor a.c—d.c)
Heat ( car Radiator)
Radioactive
(sterilization of med.
equipments)
Pressure Bernoulli
( Sailboat)
Electronic Transistor
(On when dark–On
when hot)
Force and motion
(Safety feature for
lorry)
Waves
(spec. for radar
systems )
Force and motion
(elasticity/safety in
sport)
Radioactive
(safety in handling
radioactive source)
Light
( fibre optic)
Waves
Retaining wall
2009
Pressure
(Vacuum cleaner)
Radioactive
(treatment cancer)
Heat
( Water flask )
Electricity
( lampfilament )
2010
Pressure
Archimedes( raft)
Waves
(dish-solar cooker)
Force and motion
(force- lawnmover)
Electricity
( circuit )
2011
Force and motion
(Elasticity)
Electromagnet
(Electric bell)
Pressure
( Pascal-h.brake )
Radioactive
(Fertiliser)
2007
2008
Tahun
Analisis mengikut tajuk
2
3
2004
2005
4
5
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2006
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2007
I
2008
I
2009
I
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2011
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8
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10
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I --- Part B
9
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2010
7
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6
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I ---- Part C
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Section C : DECISION MAKING
NOTE
• DON’T WRITE THE CRITERIA FOR ALL
THE CHOICES GIVEN IN THE
QUESTION
• DON’T STATE VALUE
• DON’T COMPARE BETWEEN THE
CRITERIA
Section C : DECISION MAKING
NOTE
• DO WRITE EACH CRITERIA FOR THE
CHOSEN SUBJECT
• DO STATE THE CHARACTERISTIC AS
HIGH / LOW /LARGE /SMALL
• DO THE JUSTIFICATION BY
REPEATING ALL THE CHARACTERICS
OF THE CHOSEN SUBJECT.
Pemarkahan -- kes 1
1. Maximum ONLY 4 marks

EXPLAINING ALL THE TYPE OF RETAINING
WALL.
BUTTTT……

NOT CHOOSE ANYTHING OR CHOOSE
MORE THAN ONE RETAINING WALL.
 MARKS given only for the
CORRECT REASONs
Pemarkahan -- kes 2
• EXPLAINING ALL THE
CHARACTERISTICS OF given
RETAINING WALL
• BUTTTT……CHOOSE wrongly
MARKS only will be given
AT WHAT YOU CHOOSE
 MAX--- 8 MARKS
DECISION MAKING STEPS
 1. Distinguish the characteristics given
 2. Explain the properties of every
chosen characteristics and give the
reason.
 3. Distinguish the most suitable material
based on the characteristics stated.
 4. Give reasons why the material chosen.
Q.12-2008
• A new harbour is to be built at a new
location. The suggested new location
is either at a bay or a cape. Four
models for the structure of the
retaining wall are given. Table 12
below shows the location and the
characteristics of the four retaining
walls.
• Explain the best location and the
suitability of each characterictics in
Table12.
• Determine the most suitable retaining
wall to be used.
• Give the reason for your choice.
Worksheet
Answer
Characteristic
BAY
The ______
SLOPING
______retaining
wall.
UNEVEN
______ surface
HIGH
______
retaining wall
Explaination / reason
Water is calmer
Decrease the wavelength /
higher water pressure at
higher depth.
Reduce energy, wave is
reflected at different
direction.
Protect form high wave /
overflow of water.
8 marks
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W
RETAINING
WALL
The most suitable __________________ is _____
LOCATED AT BAY, SLOPING RETAING WALL,
Because _________________________________
UNEVEN SURFACE AND HIGH RETAINING WALL
________________________________________
2 marks
TOTAL : 10 marks
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Question 2007
Characteristic
Big
____ Diameter of the
parabolic disc
Distance of signal receiver
from the centre of
Same as f
parabolic is ____
Explaination / reason
Can receive more
signal/wave
All signal is focus to
reciever
Type of wave transmitted
is ____
microwave
High frequency, more
energy / short wavelength
– easy to reflect.
Height of the parabolic disc
from the ground is ______
high
Easy to receive the
signal.
The most suitable is K
Repeat 1,3,5,7
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Question 11 2011
Characteristic
Explaination / reason
Incompressible
_______________ brake fluid
Pressure transmitted
equally
high
_______
boiling point
Not easy to boil / volume
remains constant
high
______ spring constant
Low
( 1:5)
____
____ ratio
The most suitable is L
Withstand high force
Large force produce /
Easy to stop
Repeat 1,3,5,7
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Question 12 2011
Characteristic
State of matter is______
liquid
_______
short
half life
beta
_______ ray
Explaination / reason
Can be absorb
Suitable period can
be detected
Medium penetration
Type of detector is _____
GM tube
Can detect radioactive
ray
The most suitable is Y
Repeat 1,3,5,7
No 11 –2010
characteristics
Explaination
Method of moving lawnmover
-Push the handle
-
Bigger force produced
Mass of lawnmower
-Big
-
More stable // cut efficiently
Size of cutter blade
-Big size of cutter blade
-
Cut more more grass
The angle between handle and the
horizontal
-large
-
Bigger downward force // not lift up
-
Therefore, I choose lawnmover M,
because it has push handle, big mass of lawnmower, big size of cutter blade
and has large angle between handle and horizontal line
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P=F
A
= 50 = 25 N cm-2
2
F1 F2

 25
A1 A2
F1  150N
Pt

mc

m  V

 
m  8001000106
m  0.8kg
mc  0.8  2000  90
t

 144 s
P
1000
Physics is Fantastic
Good Luck &
Thank You
Pn. Aswati Ishak
SMKSH
No 12
characteristic
Reason
1 of cell
Connection
- series
Increase the voltage
2
Connection of battery
To allow the flow of current
-Positive terminal of cell to negative
terminal of next cell
5
Connection of resistor and bulb
Increase the resistance
-series
7
Connection of bulb
- parallel
-
the most suitable circuit is X
Because ………….
4
If one bulb blow, another bulb still
function
9
 10 (1,4,5,7)
7M
P
The most suitable _heating element____ is _____
high melting, point, low resistance,
Because _________________________________
low ability to break at high temperature, and
________________________________________
low oxidation level.
NO.3
Characteristic
LOW
____specific
heat capacity.
smaller
______size
of
ice cream box
Material for
outer box:
Plastic
PVC
______
Bright
______
colour
of outer box
Explaination / reason
Easy get cold / becomes
cool quickly
Easier to carry
Poor conductor of heat
Does not absorb heat from
surrounding quickly
R
The most suitable _ice cream container_ is _____
Low specific heat capacity, small size of ice
Because _________________________________
cream box, material for outer box is plastic pvc
________________________________________
and bright colour of outer box
No. 4
Characteristic
Large
____
diameter
LOW
_____density
LOW
______
rate
of expansion
HIGH
______
melting point
Explaination / reason
Reduce the resistance of
the cables
The cables will be lighter
Less expansion and sagging
in the cable during hot day
Can withstand high
temperature / does not
melting easily
The most suitable ______cable_______
Q
is _____
Large diameter, low density,
Because _________________________________
Low rate of expansion and high melting point.
________________________________________