13
SET SOALAN 1
7 (a) Diagram 7.1 shows three different objects P, Q and R with the same size are placed in the
beakers containing water. The density of water is 1.0g/cm3.
Rajah 7.1 menunjukkan tiga objek yang berbeza P, Q dan R dengan saiz yang sama diletakkan di dalam bikar
yang mengandungi air. Ketumpatan air 1.0g/cm3.
(i) Based on the observation, state the position of objects P and Q when placed in water. Berdasarkan pemerhatian, nyatakan kedudukan objek P dan Q apabila dimasukkan ke dalam air.
Object P : ............................................................................................................
Object Q : ............................................................................................................
[2 marks]
(ii) Based on the observation, state one inference for the position of object P. Berdasarkan pemerhatian, nyatakan satu inferens bagi kedudukan objek P.
..................................................................................................................................
[1 mark]
(iii) Based on the observation, classify objects P, Q and R based on their relative density to
the density of water. Berdasarkan pemerhatian, kelaskan objek P, Q dan R berdasarkan ketumpatan bandingan dengan
ketumpatan air.
Relative density of water. Ketumpatan berbanding air
Objects Objek
Less dense than water Kurang tumpat daripada air
Denser than water Lebih tumpat daripada air
[2 marks]
14
(iv) State the relationship between the density of object and their ability to float or sink in
water. Nyatakan hubungan antara ketumpatan objek dan keupayaan mereka untuk terapung atau tenggelam
dalam air.
..................................................................................................................................
..................................................................................................................................
[1 mark]
(b) Table 7.2 shows different objects and their densities. Jadual 7.2 menunjukkan bahan berlainan dan ketumpatannya.
Predict what happen to the cork and wood if they are placed in a container containing oil.
The density of oil is 0.75g.cm3. Fill the answer in Table 7.2
Ramalkan apa yang berlaku kepada gabus dan kayu jika diletakkan di dalam bekas yang mengandungi minyak.
Ketumpatan minyak 0.75g.cm3. Isikan jawapan dalam Jadual 7.2.
[2 marks]
8. (a) Diagram 8.1 shows two similar buses with different colour. Rajah 8.1 menunjukkan dua buah bas yang sama dengan warna yang berlainan.
Bus A Bus A
(white in colour) (warna putih)
Bus B Bus B
(black in colour)
(warna hitam)
iagram 8.1
Rajah 8.1
15
(i) Based on your observation in Diagram 8.1, the passenger in which bus will feel more
warm during hot days? Berdasarkan pemerhatian anda di dalam Rajah 8.1. penumpang di dalam bas yang manakah akan merasa
panas pada cuaca panas ?
……………………………………………………………………………………….
[1 mark]
(ii) What inference can be drawn based on the situation in bus A and bus B shown in Diagram
8.1 ? Apakah inferens yang dapat dibuat berdasarkan situasi di dalam bas A dan bas B seperti yang ditunjukkan di
dalam Rajah 8.1 ? ……………………………………………………………………………………….
[1 mark]
(iii) State a hypothesis based on your observation in Diagram 8.1. Nyatakan hipotesis berdasarkan pemerhatian yang ditunjukkan pada Rajah 8.1.
……………………………………………………………………………………….
[1 mark]
(b) A student carried out an experiment to investigate the situation in bus A and bus B. Diagram 8.2
shows an experiment carried out to determine the relationship between the colour of an object and
the absorption of heat. Seorang pelajar menjalankan eksperimen untuk menyiasat situasi yang berlaku di dalam bas A dan B. Rajah 8.2
menunjukkan eksperimen yang dijalankan untuk mengenalpasti hubungan diantara warna bahan dan penyerapan haba.
Diagram 8
Rajah 8
16
(i) Diagram 8.3 shows the final temperature readings taken after 20 minutes. Record the
readings in Table 8.1. Rajah 8.3 menunjukkan bacaan suhu akhir yang diambil selepas 20 minit. Rekodkan bacaan di dalam Jabual
8.1.
Diagram 8.3 Rajah 8.3
Black and dull tin Tin hitam dan pudar
White and shiny tin Tin putih dan berkilat
Initial
temperature (ºC)
Suhu awal (ºC)
Final
temperature (ºC)
Suhu akhir (ºC)
Initial
temperature (ºC)
Suhu awal (ºC)
Final
temperature (ºC)
Suhu akhir (ºC)
30
30
Table 8.1 Jadual 8.1
[2 marks]
17
(ii) Based on the readings in Table 8.1, draw a bar chart to compare final temperature of air in
both tin after 20 minutes. Berdasarkan bacaan pada Jadual 8.1, lukiskan carta bar untuk membandingkan suhu udara bagi kedua-dua tin
selepas 20 minit.
[2 marks]
(iii) State the variables involved in this experiment. Nyatakan pembolehubah yang terlibat di dalam eksperimen ini.
Manipulated variable Pembolehubah dimanipulasikan
Responding variable Pembolehubah yang bergerak balas
Constant variable Pembolehubah dimalarkan
[3 marks]
18
(iv) Based on the bar chart above, state a relationship between the colour of an object and the
absorption of heat. Berdasarkan carta bar di atas, nyatakan hubungan diantara warna den penyerapan haba.
……………………………………………………………………………………….
[1 mark]
(v) Define operationally “the absorption of heat”. Definisikan secara operasi “penyerapan haba”.
……………………………………………………………………………………….
[1 mark]
19
SET SOALAN 2
7. Diagram 7.1 shows the apparatus set-up to study the effect of the exposed surface area
to the rate of evaporation. Rajah 7.1 menunjukkan susunan radas untuk mengkaji kesan luas permukaan terdedah terhadap kadar
sejatan.
Experiment Eksperimen
Time taken for the filter paper
to dry Masa yang diambil untuk kertas turas
mengering
Experiment 1 Eksperimen 1
Stopwatch P Jam randik P
unfolded filter
paper kertas turas yang
tidak dilipat
20
Experiment Eksperimen
Time taken for the filter paper
to dry Masa yang diambil untuk kertas turas
mengering
Experiment 2 Eksperimen 2
Stopwatch Q Jam randik Q
Experiment 3 Eksperimen 3
Stopwatch R Jam randik R
Diagram 7.1 Rajah 7.1
filter paper
folded once kertas turas yang
dilipat satu kali
filter paper
folded twice kertas turas yang
dilipat dua kali
21
(a) (i) Based on the observation in Diagram 7, record the readings of stopwatch
P, Q and R. Berdasarkan pemerhatian dalam Rajah 7, rekod bacaan jam randik P, Q dan R.
Stopwatch Jam randik
Time Masa
P
Q 10 minutes 20 seconds
10 minit 20 saat
R
Table 7.1 Jadual 7.1
[2 marks] [2 markah]
(ii) State one hypothesis that can be made from the experiment. Nyatakan satu hipotesis yang boleh dibuat daripada eksperimen ini.
……………………………………………………………………………………………
……………………………………………………………………………………………
[1 mark] [1 markah]
(iii) State the variable involved in this experiment. Nyatakan pembolehubah yang terlibat dalam eksperimen ini.
Manipulated variable Pembolehubah dimanipulasi
Responding variable Pembolehubah bergerakbalas
Constant variable Pembolehubah dimalarkan
[3 marks] [3 markah]
22
(b) Experiment 1 is repeated by placing the apparatus in front of a rotating table
fan as shown in Diagram 7.2.
Eksperimen 1 diulang dengan meletakkan susunan radas berhadapan dengan
kipas meja yang sedang berputar seperti ditunjukkan dalam Rajah 7.2.
Diagram 7.2
Rajah 7.2
(i) Based on Diagram 7.2, predict the time taken for the filter paper to dry. Berdasarkan Rajah 7.2, ramalkan masa yang diambil untuk kertas turas mengering.
……………………………………………………………………………
[1 mark] [1 markah]
(ii) State an inference for your observation in Diagram 7.2. Nyatakan satu inferen bagi pemerhatian anda dalam Rajah 7.2.
……………………………………………………………………………………………
……………………………………………………………………………………………
[1 mark] [1 markah]
not folded filter paper kertas turas yang tidak
dilipat
23
8. (a) Diagram 8.11 and Diagram 8.12 shows two models of electricity transmission. Rajah 8.11 dan Rajah 8.12 menunjukkan dua model penghantaran tenaga elektrik.
Diagram 8.1 Rajah 8.1
(i) State the difference between the brightness of bulb A and bulb B.
Nyatakan perbezaan antara kecerahan mentol A dan mentol B.
…………………………………………………………...…………................…
[1 mark]
(ii) Write one inference about the brightness of the bulb. Tuliskan satu inferens mengenai kecerahan mentol.
……………………………………………………...…………................………
[1 mark]
(iii) State one relationship between the amount of output voltage and the brightness
of the bulb. Nyatakan satu hubungan antara jumlah voltan output dengan kecerahan mentol.
..…………………………………………………...…………................………
[1 mark]
bulb B mentol B
36V a.c
12V a.c
bulb A mentol A
step down transformer transformer injak turun
step up transformer transformer injak naik
24
(b) Diagram 8.2 shows the experiment to study the relationship between the input voltage
and the output voltage with the number of turns in the primary coil and the number of
turns in the secondary coil Rajah 8.2 menunjukkan satu eksperimen untuk mengkaji hubungan antara voltan input dan voltan output
dengan bilangan lilitan gegelung primer dan bilangan lilitan gegelung sekunder
Diagram 8.2 Rajah 8.2
Power supply Sumber kuasa
Secondary coil Gegelung sekunder
Primary coil Gegelung primer
C- shape iron core Teras besi C
25
(i) The experiment is repeated three times more by using different number of turns in
the secondary coils that is 20, 30 and 40 turns. Eksperimen diulang sebanyak tiga kali lagi dengan menggunakan bilangan lilitan yang berbeza bagi
gegelung sekunder iaitu20, 30 and 40 lilitan.
Record the output voltage in the space provided. Rekod voltan output di dalam ruang yang telah disediakan.
Number of turns in primary coil = 10 Bilangan lilitan gegelung primer = 10
Number of turns in secondary coil = 20 Bilangan lilitan gegelung sekunder = 20
Output voltage = 2.0 V Voltan output = 2.0V
Number of turns in primary coil = 10 Bilangan lilitan gegelung primer = 10
Number of turns in secondary coil = 30 Bilangan lilitan gegelung sekunder = 30
Output voltage =
Voltan output = …………………V
Number of turns in primary coil = 10 Bilangan lilitan gegelung primer = 10
Number of turns in secondary coil = 40 Bilangan lilitan gegelung sekunder = 40
Output voltage =
Voltan output = …………………V
Number of turns in primary coil = 10 Bilangan lilitan gegelung primer = 10
Number of turns in secondary coil = 10 Bilangan lilitan gegelung sekunder = 10
Output voltage = 1.0 V Voltan output = 1.0V
26
Complete Table 8.1 by recording the output voltage on the respective number of
turns on the secondary coil. Lengkapkan jadual 8.1 dengan merekodkan voltan output mengikut bilangan gegelung sekunder
masing-masing.
Primary coil Gegelung primer
Secondary coil Gegelung sekunder
Number of
turns Bilangan lilitan
Input voltage Voltan input
Number of
turns Bilangan lilitan
Output voltage Voltan output
10 2.0 10 1.0
10 2.0 20 2.0
10 2.0 30
10 2.0 40
Table 8.1 Jadual 8.1
[2 marks]
27
(ii) Based on the data in Table 8.1, draw a line graph of the output voltage against the number of
turns in secondary coils. Berdasarkan data pada Jadual 8.1, lukis graf garis bagi voltan output melawan bilangan lilitan gegelung
sekunder.
(iii) Based on the line graph drawn in 8 (b) (ii), state one relationship between the output
voltage and the number of turns in secondary coil. Berdasarkan graf garis yang dilukis di 8 (b) (ii), nyatakan satu hubungan antara voltan output dengan
bilangan lilitan gegelung sekunder.
…................………………………………………………………...…………................…
[1 mark]
28
(iv) State the responding variable in this experiment. Nyatakan pembolehubah yang bergerakbalas dalam eksperimen ini.
......………………………………………………………...…………................…
[1 mark]
(v) State the operational definition for step-up transformer. Nyatakan definisi secara operasi bagi transformer injak naik.
......………………………………………………………...…………................…
[1 mark]
(c) Diagram 8.3 shows an electrical transmission and distribution system which involved four
transformers, P, Q, R and S. Rajah 8.3 menunjukkan sistem penghantaran dan pengagihan elektrik yang melibatkan empat transformer P,
Q, R dan S .
Diagram 8.3 Rajah 8.3
P
Q R
S
Generator
commercial
and
industries komersial
dan
industri
housing area kawasan
perumahan
11kV
132kV
33kV
11kV
11kV
415V
240V
29
Based on the operational definition of step up transformer in c( i), classify transformer P,
Q, R and S in Diagram 8.3 based on type of transformer. Berdasarkan definisi secara operasi bagi transformer injak naik dalam c (i), kelaskan transformer P, Q, R
dan S dalam Rajah 8.3 berdasarkan jenis transformer.
Classification Pengkelasan
Transformer Transformer
Step up transformer Transformer injak naik
Step down transformer Transformer injak turun
[2 marks] [2 markah]
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