soalan set 8 ct mery.doc
TRANSCRIPT
Sains 018 CT Mery’15
SET 8
1 An investigation was carried out by a group of pupils to find out the time taken for
different length of pendulums to complete swings. Table1 shows the result obtained.
Sekumpulan pelajar menjalankan satu penyiasatan untuk menentukan masa diambil
oleh bandul berbeza panjang untuk melengkapkan satu ayunan lengkap.
Jadual 1 menunjukkan keputusan yang diperolehi.
Diagram 1
Rajah 1
Pendulum / Bandul X Y Z
Time taken to complete 20 swings (s)
Masa yang diambil untuk melengkapkan 20 ayunan10 20 30
Table 1
Jadual 1
a) State :
Nyatakan :
(i) What is changed ( manipulated variable) :
Pembolehubah dimanipulasikan
______________________________________________________________
_
[ 1 mark /1 markah]
(ii) What is observed (responding variable):
pembolehubah bergerakbalas
______________________________________________________________
[ 1 mark /1 markah]
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Sains 018 CT Mery’15
(iii) What is kept the same (constant) :
Pembolehubah dimalarkan
______________________________________________________________
[ 1 mark /1 markah]
b) What is the trend of time taken for pendulum to complete 20 swings ?
Apakah corak perubahan masa yang diambil untuk 20 ayunan?
_________________________________________________________________
[ 1 mark /1 markah]
(c) Write one relationship (hyphothesis) for this investigation.
Tuliskan satu hipotesis untuk penyiasatan ini.
_________________________________________________________________
[ 1 mark /1 markah]
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Sains 018 CT Mery’15
2 Figure 2 shows an investigationn. Three identical cans filled with hot boiling water at
85˚C are wrapped with three different materials. The temperature of water in each
can is measured after 20 minutes.
Rajah 2 menunjukkan satu penyiasatan. Tiga tin dimasukkan dengan air panas pada
suhu 85°C yang dibalut dengan tiga bahan yang berbeza. Suhu air dalam setiap tin
disukat selepas setiap 20 minit.
Table 2 shows the results of the investigation.
Jadual 2 menunjukkan keputusan penyiasatan.
Diagram 2
Rajah 2
Insulator
Penebat
Temperature
Suhu
Initial
Awal
After 20 minutes
Selepas 20 minit
Towel
Tuala
85
85
78
78
Tissue paper
Kertas tisu
85
85
75
75
Paper
Kertas
85
85
72
72
Table 2
Jadual 2
3
( 85˚C) ( 85˚C)
Sains 018 CT Mery’15
(a) What is the aim (purpose) of the investigation ?
Apakah tujuan penyiasatan ini?
________________________________________________________________
________________________________________________________________
[ 1 mark /1 markah]
(b) State one information gathered in this investigation ?
Nyatakan satu maklumat yang dikumpul dalam penyiasatan ini
________________________________________________________________
[ 1 mark /1 markah]
(c) Predict the temperature of water if the can is wrapped with a plastic bag.
Ramalkan suhu air sekiranya tin dibalut dengan beg plastik.
________________________________________________________________
________________________________________________________________
[ 1 mark /1 markah]
(d) Besides the above materials, give two other materials that are good insulators
of heat.
Selain daripada bahan di atas, berikan dua contoh bahan penebat yang lain.
(i) _______________________________________________________
(ii) ________________________________________________________
[ 2 marks/2 markah]
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Sains 018 CT Mery’15
3. Samy immerses red and blue litmus papers respectively into solutions P , Q and
R.Table below shows the observation on the red and blue litmus papers.
Samy merendamkan kertas litmus merah dan biru dalam bahan P,Q dan
R.Jadual di bawah menunjukan pemerhatian bagi kertas litmus merah dan
kertas litmus biru.
Solution
Larutan
Changes in the colour of litmus papers
Perubahan warna kertas litmus
Red (Merah) Blue(Biru)
P
P
Red
Merah
Blue
Biru
Q
Q
Blue
Biru
Blue
Biru
R
R
Red
Merah
Red
Merah
Table 3
Jadual 3
(a) Write one observation based on result from the Table 3.
Tuliskan satu pemerhatian berdasarkan keputusan dalam Jadual 3.
____________________________________________________________
[ 1 mark /1 markah]
(b) State,
Nyatakan,
. (i) What is changed ( manipulated variable)
pemboleubah manipulasi
____________________________________________________________
[ 1 mark /1 markah]
(ii)What is observed ( responding variable)
pembolehubah bergerakbalas
_________________________________________________________
[ 1 mark /1 markah]
(ii) What is kept the same ( constant)
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Sains 018 CT Mery’15
pembolehubah dimalarkan
____________________________________________________________
[ 1 mark /1 markah]
( c ) Predict another characteristic of solution R
Ramalkan ciri-ciri lain bagi bahan R.
_______________________________________________________________
[ 1 mark /1 markah]
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Diagran 3
Rajah 3
(a) State the observation that you can make from the figure 3.
Nyatakan pemerhatian yang dapat dibuat berdasarkan gambar di rajah 3.
_________________________________________________________________
[ 1 mark /1 markah]
(b) Name the device that the man uses.
Namakan alat yang digunakan oleh lelaki di atas.
_________________________________________________________________
[ 1 mark /1 markah]
(c ) What will happen if one of the openings is covered with opaque object.
Apakah yang akan berlaku jika salah satu lubang ditutup dengan objek legap.
_________________________________________________________________
[ 1 mark /1 markah]
(c) Give your reason (inference) to your answer in (c).
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Berikan inferens pada jawapan di (c).
_________________________________________________________________
_________________________________________________________________
[ 1 mark /1 markah]
(d) Make a conclusion based on the investigation.
Tuliskan satu kesimpulan berdasarkan penyiasatan ini.
________________________________________________________________
________________________________________________________________
[ 1 mark /1 markah]
THE END
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