PRA 2 2015 SKBU2

Section B[20 marks]

Time suggested for this section is 30 minutes. Answer all questions.Write your answer in the spaces provided.Masa yang dicadangkan untuk bahagian ini ialah 30 minit. Jawab semua soalan.Tulis jawapan kamu pada ruangan yang diberikan.

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Figure 1Rajah 1

A group of students prepared three pots, P, Q and R, as shown in Figure 1. All three pots were given the same treatment and care. Table 1 shows the results that were obtained after two weeks.

Sekumpulan pelajar menyediakan 3 pasu P , Q dan R seperti yang ditunjukkan dalam rajah 1. Ketiga-tiga pasu diberekan rawatan dan jagaan yang sama. Jadual 1 menunjukkan diperolehi selepas dua minggu.

PotPasu

Average height of seedling (cm)Purata tinggi anak pokok (cm)

PQR

532

Table 1 Jadual 1

(a) What can you infer from the observation?Apakah inference kamu berdasarkan pemerhatian.

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...................................................................................................................................[ 1 mark ]

(b) State one observation to support the inference in (a).Nyatakan satu pemerhatian untuk menyokong inferens di (a)

....................................................................................................................................

P Q R

PRA 2 2015 SKBU2

....................................................................................................................................[ 1 mark ]

c) What is the aim of the investigation above ? Apakah tujuan penyiasatan di atas ?

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.................................................................................................................................[ 1 mark ]

d) Write two information based on the table above. Tuliskan dua maklumat berdasarkan jadual di atas.

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..................................................................................................................................[ 1 mark ]

2. Diagram 2 shows an investigation on objects that can conduct electricity.Rajah 2 menunjukkan satu penyiasatan tentang objek-objek yang boleh mengalirkan arus

elektrik.

Diagram 2/Rajah 2

Table 2 shows the result of this investigation.Jadual 2 menunjukkan keputusan penyiasatan.

ObjectObjek

X Y

The ability of bulb to light upKebolehan mentol menyala

CanBoleh

CannotKebolehan mentol menyala

Table 2/Jadual 2

(a) State one reason (inference) about the ability of bulb to light up using X.Nyatakan satu sebab (inferens) tentang kebolehan mentol menyala menggunakan X.

PRA 2 2015 SKBU2

....................................................................................................................................

....................................................................................................................................(1 mark)

(b) Write one observation to support the inference in 2(a).Tulis satu pemerhatian untuk menyokong inferens di 2(a)

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....................................................................................................................................(1 mark)

(b) Predict what happens to object X when the circuit is complete.Ramalkan apakah yang berlaku pada objek X apabila litar elektrik itu lengkap.

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....................................................................................................................................(1 mark)

(d) What conclusion can be made from this investigation?Apakah kesimpulan yang boleh dibuat daripada penyiasatan ini?

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....................................................................................................................................(1 mark)

PRA 2 2015 SKBU2

3. A group of pupils carried out an investigation. They tested different substances by using wet litmus paper. The table below shows the results of the investigation.

Satu kumpulan murid telah menjalankan satu penyiasatan. Mereka menguji bahan yang berlainan menggunakan kertas litmus lembap.Jadual dibawah menunjukkan keputusan penyiasatan tersebut

(a) What is your inference based on the observation above? Apakah inferens berdasarkan pemerhatian di atas ?

....................................................................................................................................

....................................................................................................................................[ 1 mark ]

(b) In this experiment, state the thing that is

PRA 2 2015 SKBU2

Berdasarkan eksperimen ini,nyatakan tentang

(i) changed ( manipulated variable) Diubah ( pembolehubah manipulasi:................................................................

[ 1 mark ](ii) observed (responding variable):

Diperhati (pembolehubah bergerakbalas:........................................................ [ 1 mark ]

(d) What can you conclude from the experiment? Apakah kesimpulan kamu daripada eksperimen ?

....................................................................................................................................

..................................................................................................................................(1 mark)

4. Table 4 shows the time taken by four planets to orbit the Sun. Jadual 4 menunjukkan masa yang diambil empat buah planet untuk membuat satu peredaran lengkap mengelilingi Matahari.

PlanetPlanet

Time taken by planet to orbit the Sun / yearMasa yang diambil planet untuk membuat satu

peredaran lengkap mengelilingi Matahari / tahunJupiter

Musytari 11.9Mars

Marikh 1.9VenusZuhrah 0.6MercuryUtarid 0.2

Table 4/ Jadual 4

(a) State one reason (inference) about the difference in the time taken by planets Jupiter and Mercury. Nyatakan satu inferens tentang perbezaan antara masa yang diambil planet Musytari dan Utarid. .

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...................................................................................................................................[ 1 mark ]

(b) What is the trend of change in the time taken by the planets to orbit the Sun from Jupiter to Mercury?

PRA 2 2015 SKBU2

Apakah corak perubahan bagi masa yang diambil planet untuk membuat satu peredaran lengkap mengelilingi Matahari dari Musytarike Utarid?

....................................................................................................................................[ 1 mark ]

(c) Planet A takes 1 year to orbit the Sun. Based on Table 1, predict the location of planet A. Planet A mengambil masa 1 tahun untuk membuat satu peredaran lengkap mengelilingi Matahari. Berdasarkan Jadual 1, ramalkan kedudukan bagi planet A.

.................................................................................................................................... [ 1 mark ]

(c) The time taken by a planet to orbit the Sun is related to the distance of the planet from the Sun. Based on the statement above, state one relationship (hypotesis) between the variable that is changed (manipulated) and the variable that is observed (responding).

Masa yang diambil planet untuk membuat satu peredaran lengkap mengelilingi Matahari

adalah berkait rapat dengan jarak planet itu dari Matahari. Berdasarkan pernyataan di atas, nyatakan satu hubungan (hipotesis) antara pemboleh ubah yang dimanipulasikan dengan pemboleh ubah bergerak balas.

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[ 1 mark ]

5. Diagram 3 shows an investigation on the strenght of three models,P,Q and R.Model P is made from paper,model Q is made from manila card and model R is made from cardboard.each model is placed with the same mass of load onto it.

PRA 2 2015 SKBU2

Rajah 3 menunjukkan satu penyiasatan terhadap kekuatan tiga model,P,Q dan R.Model P diperbuat daripada kertas,model Q diperbuat daripada kad manila dan model R diperbuat daripada kadbod.Setiap model diletakkan dengan beban yang sama jisim di atasnya.

Diagram 3/Rajah 3

The result of the investigation is recorded in the bar chart below.Keputusan penyiasatan direkodkan di dalam carta palang di bawah.

a) What is the aim of the investigation above ?Apakah tujuan penyiasatan di atas ?

..................................................................................................................................

.................................................................................................................................[ 1 mark ]

b) What is kept the same (constant variable)in this investigation? Apakah yang perlu ditetapkan (pemboleh ubah dimalarkan) dalam penyiasatan

ini.

...................................................................................................................................

..................................................................................................................................

PRA 2 2015 SKBU2

[ 1 mark ]

c) What is the relationship between the types of materials and the strength of models? Apakah hubungan antara jenis bahan dengan kekuatan model ?

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d) Predict the time taken for model to collapse if the model is made from the iron.Ramalkan masa diambil untuk model tumbang jika model diperbuat daripada besi.

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..................................................................................................................................[ 1 mark ]

END OF SECTION B

NAMA: ________________________________

KELAS: ________________________________

PRA 2 2015 SKBU2

Section B[20 marks]

Time suggested for this section is 30 minutes. Answer all questions.Write your answer in the spaces provided.Masa yang dicadangkan untuk bahagian ini ialah 30 minit. Jawab semua soalan.Tulis jawapan kamu pada ruangan yang diberikan.

1. Maklumat di bawah adalah satu catatan tentang satu penyiasatan yang dijalankan oleh sekumpulan murid.

Maklumat 1

Kadar denyutan nadi ialah 80 seminit.

Maklumat 2

Kadar denyutan nadi ialah 100 seminit

Maklumat 3

Kadar denyutan nadi ialah 140 seminit.

1

a. What is the aim of the investigation?Apakah tujuan penyiasatan ini?

PRA 2 2015 SKBU2

________________________________________________________________________

________________________________________________________________________[ 1 markah ]

b. State two information gathered in this investigation.Nyatakan dua maklumat yang dikumpul dalam penyiasatan ini.

1. __________________________________________________________________

2. __________________________________________________________________[1 markah]

c. What conclusion can be made from this investigation?Apakah kesimpulan yang boleh dibuat daripada penyiasatan ini?

________________________________________________________________________

________________________________________________________________________[ 1 markah ]

d. In another investigation,pupils used bouncing ball to measure time.Give one suitable reasonDalam satu penyiasatan lain murid tersebut menggunakan lantunan bola untuk menyukat masa tetapi tidak berjaya. Berikan satu alasan yang sesuai.

________________________________________________________________________

________________________________________________________________________[1 markah]

22. A group of pupils carry out an experiment using apparatus shown below.

Sekumpulan murid telah menjalankan satu penyiasatan dengan menggunakan radas-radas seperti yang ditunjukkan di bawah.

PRA 2 2015 SKBU2

Experiment Penyiasatan

sugar/gula

a. What is the aim of the investigation above ?Apakah tujuan penyiasatan di atas ?

________________________________________________________________________

________________________________________________________________________[ 1 markah]

b. What is kept the same (constant variable)in this investigation?Apakah yang perlu ditetapkan (pemboleh ubah dimalarkan) dalam penyiasatan ini.

________________________________________________________________________[ 1 markah]

c. What is the relationship between the manipulated variable and the responding variable in 2(a)?Apakah hubungan antara pembolehubah dimanipulasi dengan pembolehubah bergerakbalas di 2(a) ?________________________________________________________________________

________________________________________________________________________[ 1 markah]

33. Adam has two rubber bands,X and Y.X and Y are of the same length.He carries out an

investigation using the rubber bands.Each rubber band is hung with an identical cup.Diagram below show the result of the investigations.

PRA 2 2015 SKBU2

Adam mempunyai dua gelang getah, X dan Y. X dan Y adalah sama panjang. Dia menjalankan penyiasatan menggunakan dua gelang getah itu. Setiap gelang getah digantungkan dengan cawan yang serupa. Rajah di bawah menunjukkan keputusan penyiasatan itu.

a. State two inferences about the length of rubber band X and Y.

Nyatakan dua inferens tentang panjang gelang getah X dan Y.

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________[ 2 markah ]

b. Write one observation to support your inference in 3 (a). Tulis satu pemerhatian untuk menyokong inferens kamu di 3(a)

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________[ 1 markah ]

c. State one constant variable.Nyatakan satu pembolehubah yang dimalarkan.

________________________________________________________________________[ 1 markah ]

44 Diagram below shows the occurrence of the phases of the Moon that can be seen from a

location on the Earth.

PRA 2 2015 SKBU2

Rajah di bawah menunjukkan kejadiaan fasa bulan yang dapat dilihat dari satu lokasi di Bumi.

a. What is the purpose (aim) of the investigation?Apakah tujuan penyiasatan ini?

________________________________________________________________________

________________________________________________________________________[ 1 markah ]

b. State the trend of change in the surface area of Moon that can be seen.Nyatakan corak perubahan luas permukaan Bulan yang dapat dilihat.

________________________________________________________________________[ 1 markah ]

c. Predict surface area of moon that can be seen after old cresent. Ramalkan luas permukaan bulan yang dapat dilihat selepas bulan sabit lama.

________________________________________________________________________ ( 1 markah)

d. One night on 15th day of Lunar Calender the full Moon cannot be seen.Suatu malam 15 hb Taqwin Qamari,Bulan purnama tidak kelihatan.

Based on the statement above ,give one inference .Berdasarkan pernyataan di atas,berikan satu inferen.

________________________________________________________________________

________________________________________________________________________[ 1 markah ]

5

5.

Surface area of moon that can be seen/cm²Luas permukaan bulan yang dapat dilihat/ cm²

Phase of moonBentuk fasa bulan

new cresentbulan sabit

baru

old cresentbulan sabit

lama

half moonbulan separa

full moonbulan

purnama

half moonbulan separa

PRA 2 2015 SKBU2

Ploughing techniquesTeknik membajak

Time takenmasa

AnimalHaiwan

2 weeks2 minggu

Ploughing machineJentera membajak

2 days2 hari

The information in Table above shows the ploughing time taken by a farmer to plough a plot of land using two different techniques.Pernyataan dalam jadual yang ditunjukkan di atas mengenai masa petani membajak sawah menggunakan dua teknik yang berbeza.

a. What is the purpose of the activity?Apakah tujuan tentang aktiviti ?

________________________________________________________________________

________________________________________________________________________[ 1 markah ]

b. State one thing that should be kept the same.Nyatakan satu pembolehubah yang dimalarkan.

___________________________________________________________________________

( 1 markah)

c. State the thing that isNyatakan:-

(i) changed: _____________________________________________________________ Pembolehubah manipulasi

(ii) measured: ____________________________________________________________ Pembolehubah bergerak balas

(2 markah)

d. What can you conclude from above experiment? Apakah kesimpulan berdasarkan eksperimen di atas?

________________________________________________________________________

________________________________________________________________________[ 1 markah ]

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PRA 2 2015 SKBU2