Latih tubi T1

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Name : Class : 3R

Latih tubi T1

Answer all questions.

Jawab semua soalan.

1. Figure 1 shows an apparatus that is frequently used in the science laboratory. Gambar

rajah 1 menunjukkan peralatan yang sering digunakan di dalam makmal sains.

Figure 1

(a ) Name the apparatus. Namakan alat tersebut.

________________________________ [1 mark]

(b ) What is the use of the apparatus?. Apakah kegunaan alat tersebut?

_________________________________ [1 mark]

(c ) What is the unit of measurement for this apparatus ? Apakah unit pengukuran

yang digunakan untuk alat ini?

_________________________________ [1 mark]

(d ) Write down the volume of solution X in Figure 1. Tuliskan isi padu larutan X.

_________________________________ [1 mark]


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(e ) Tick ( ) at the correct eye level in the figure below when taking a reading of theliquid mercury.

[1 mark]

2. Figure 2 shows the different levels of organization of cell in the human body.

[ 2 marks ] Figure 2

( a ) On Figure 4,label each picture using the following words

( b ) Complete the following flow chart to show cell organization

Cell System

[ 2 marks ]

( c ) Name the system shown in figure 2.

________________________________________ [ 1 mark ]

3. Figure 3 shows three objects of various densities floating in liquids of various densities,

namely water, oil and mercury.

Cells System Organ Tissue


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Figure 3

( a) Name the three liquids;

( i ) X : _________________

( ii ) Y : _________________

( iii ) Z : _________________ [ 3 marks ]

( b ) Give the example of object P.

________________________ [ 1 Mark ]

( c ) Name one example which apply the concept of density in our daily life.

_______________________________________ [ 1 mark ]

4. Figure 4 shows the apparatus of an experiment to study the length of a pendulum and

how it affects the number of swings in a given time.

Figure 4

The result of the experiment is given in Table 1.

Length of pendulum (cm ) Time taken for 10 swing / oscillation 9 s )

20 8

25 10

30 12

35 14

Table 1


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( a ) What is the hypothesis of this experiment ?

___________________________________________________ [1 mark]

( b ) State the variables involved in the experiment. [ 2 marks]

Manipulated variable

Responding variable

Controlled variable The type of pendulum

( c ) From the result of this experiment , plot a graph of the length of the pendulum against

the time taken for 10 swings

[ 2 marks ]

5. Shows four laboratory instruments X , Y, A and B.


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X : Y :.

a) Name the instruments X and Y in the space provided above. ( 2 marks )

b) State the function of A and B.

.( 1 mark )

c) What is the S.I unit for the tools in figure 5?

.( 1 mark )

d) Name one simple tool to measure the length.

.. ( 1 mark )

6.Figure 6 shows the gaseous exchange between plants and cows in the day.

a) Identify J and K. Write the answers in the boxes provided in figure above.( 2 marks )

b) What is the percentage of J and K in atmosphere respectively?J : K : ..( 2 marks )

c) State one process that releases gas K.

.. ( 1 mark )

7. Figure 7 refers to some examples of elements.

Elements

X Y A B

J :

K:


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Gold carbon iron phosphorus

Figure 7

a) Based on figure 7,state one inactive mineral element that can befound on the earth crust.

. ( 1mark )

b) Classify all the elements in figure 7 into two groups on commoncharacteristics.

Gold carbon iron phosphorus

Common

characteristics

names of

elements ( 4 marks )

8. Figure 8 shows four types of microorganisms.

Figure 8

a. State one similar characteristic for all these microorganisms.

( 1 mark )

b. Classify the microorganisms in figure 8 according to similarcharacteristics that can be observed.

Similar

K, L , M and N

K L M N


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Characteristics

Names of

Microorganisms

( 4 marks)

9. Diagram 9 are the forms of energy.

Rajah 9 merupakan jenis-jenis tenaga.

J K L

Diagram 9 / Rajah 9

a ) State three forms of energy in diagram 9.

Nyatakan tiga bentuk tenaga dalam rajah 9

J : ..

K : ..

L : ..[ 3 marks]

b )We need energy converter to change forms of energy to another forms.

Kita perlukan alat pengubah tenaga untuk mengubah tenaga kepada yang lain.


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M N

Diagram 9.1 / Rajah 9.1

State energy changes base on diagram 9.1

Nyatakan perubahan tenaga berdasarkan diagram 4.1

i ) .

ii ) .. [ 2 marks ]

c ) Diagram 9.2 refers to the sources of energy.

Diagram 9.2 merujuk kepada sumber-sumber tenaga.

Sources of energy

Sumber-sumber tenaga

O Non-renewable energy

Tenaga yang tidak diperbaharui

DIAGRAM 9.2 / Rajah 9.2

State two examples of O.

Nyatakan dua contoh untuk O.

i )

ii ) [ 2 marks ]

10. Diagram 10 shows liquid X , Y and Z in the measuring cylinder.

Rajah 10 menunjukkan cecair X, Y dan Z di dalam selinder penyukat.

X: .

Y : Water / Air

Z: .


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Diagram 10 / Rajah 10

a ) i ) Identify X , Y and Z based on the given list. Y have been done for you.

Apakah X , Y dan Z berdasarkan senarai yang diberi. Y telah dibuat untuk anda.

[ 2 marks]

ii ) Explain why liquid Z sink in the bottom of measuring cylinder.

Terangkan mengapa cecair Z berada di bahagian dasar silinder penyukat.

.. [ 1 mark]

iii ) State why hot air balloon float in the air.

Nyatakan mengapa belon udara panas terapung di udara..[ 1 mark]

(b) State two applications of density in your daily life.

Senaraikan dua aplikasi ketumpatan di dalam kehidupan seharian.

i ) ..

ii ) .[ 2 marks ](c) If the mass of X is12g and the volume is 15 cm3 , calculate the density.

( Density = mass / volume )

Jika jisim X ialah 12g dan isipadunya 15cm3 , kira ketumpatanya.

( Ketumpatannya = Jisim / isipadu ) [ 2 marks ]

11. Diagram 1 shows the various types of system found in the human body.

Rajah 1 menunjukkan berbagai jenis system di dalam tubuh manusia.

Petrol Sea Water Mercury

Petrol Air Laut Merkuri


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DIAGRAM 11

..

(i) (ii) (iii)

a) Label any two systems in Diagram 11 using the words below.

Labelmana-mana dua sistem di dalam diagram 11 menggunakan perkataan di

bawah. (2 marks)

b)Draw lines to show the correct match between the systems and theirfunctions.

Lukiskan garisan yang menunjukkan padanan yang tepat diantara system

dan fungsinya.

System Function

[2 marks]

Nervous system Digestive system Excretory system

Salivary amylase digest starch into

glucose

Amilase air liur mencernakan kanji

kepada glukos

Digestive system

Sistem penghadaman Brings nutrients and oxygen to the cells

Membawa makanan dan oksigen ke sel-sel

Transmits information all over the body

Menghantar maklumat keseluruh badan

Breaks down complex food into

simpler substances

Mencernakan makanan kom leks ke

Nervous system

Sistem saraf


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(c) Name one organ in the excretorysystem.

Namakan satu organ di dalam system perkumuhan

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

12. Diagram 12 shows an activity to find out the by-products of burning charcoal.

Rajah 12 menunjukkan aktiviti mengkaji hasil-hasil pembakaran arang

Diagram 12 / Rajah 12

(a) State the changes that occur to the following:

Nyatakan perubahan yang berlaku terhadap :

i. lime water / air kapur

ii. temperature of the gas jar./ Suhu didalam balang gas

.[2 marks]

b) Based on your answers in (a), state the by-products of the combustion of charcoal.Berdasarkan jawapan di (a) , Nyatakan hasil-hasil pembakaran arang.

i

ii..[2 marks]

(c) Which gas supports the process of combustion?

Gas apakah yang menyokong proses pembakaran ?

..[ 1 mark]


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(d) If the charcoal is replaced with petrol :

Jika arang diganti dengan petrol :

i. State one other by-product produced . Nyatakan satu hasil pembakarannya.

ii. Name a test indicator for this by-product than you mention in (d) (i).

Namakan bahan uji untuk hasilyang anda sebutkan dalam (d) (i).

. [2 marks]

13. Diagram13showssubstanceswithdifferentdensities.Rajah 13 menunjukan bahan-bahan yang berbeza ketumpatannya.

DIAGRAM 13 / Rajah 13

(a) Predict whatis :

i) P : .

ii) Z : .. [2marks]

(b)(i) WhytheP is floating in X?

[1mark]

(ii)Base on your observation in diagram 2,what can be said about Z?Berdasarkanpemerhatian anda di rajah 2, apakah yang dapat dikatakan terhadap Z ?

[1mark]

(c) Arrange accordingtotheirdensitiesinascending order.

Susun berdasarkan ketumpatan menaik.

i) Z , Y and X

ii) X , Y and P

[2marks]

P

Z

X

Y


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(d) Hot air ballon can float in the air . Explain why. Belon panas boleh terapung diudara. Terangkan kenapa.

..[1mark].

14. Diagram 14 shows two conical flasks of equal size, one painted black and the othersilveron their outer surfaces. Each of them is filled with equal amount of hot water at100oC. The temperature of the water in each conical flask is measured after 10minutes.Rajah 14 menunjukkan dua kelalang yang sama saiznya , satu dicathitam dan

perak dibahagian luarnya. Setiap satu dipenuhi dengan kuantiti air panas 1000C.

DIAGRAM 14 / Rajah 14

Table 14.1 shows the temperatures recorded in the experiment.

Jadual 14.1 menunjukkan suhu yang direkodkan di dalam eksperimen.

Temperature /

Suhu

Conical flask / Kelalang kon

P Q

At the beginning /

Awal

100oC 100oC

After 10 minutes

Selepas 10 minit

80oC 95oC

TABLE 14.1 / Jadual 14.1

(a) Based on Table 14.1 :(i). Which conical flask shows a greater decrease in temperature?

Berdasarkan Jadual 1 , kelalang manakah menunjukkan bacaan suhu

yang tinggi menurunannya.

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

(ii) State the process of heat transfer in this experiment.

Nyatakan proses pemindahan haba di dalam eksperimen ini.

P Q


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........[2 marks]

(b) From the results above, state the paint used on the surfaces of the conical flasks P

and Q .Berdasarkan keputusan di atas , nyatakan jenis cat di permukaan kelalang P dan

Q.

P : ..........................................................................................................

Q : .......................................................................................................... [2 marks]

(c) What conclusion can you get from this experiment?

Apakah kesimpulan yang didapati berdasarkan eksperiment ?

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

(d) Give one reason for each of the following :

Berikan satu sebab untuk yang berikut:

(i) The radiator of a car is painted black.Radiator kereta dicat hitam.

......................................................................................................................... [1 marks]

(ii) Aluminium foil is used to wrap chocolates.Kertas aluminium digunakan untuk membalut coklat.

.....................................................................................................................[1 marks]

15.A student conducts an experiment to study the relationship between the length and the time of a

simple pendulum to swing. The results of the experiment are shown in Table 15.1.

Seorang murid menjalankan eksperimen untuk mengkaji perhubungan panjang bandul

denganmasa membuat satu ayunan lengkap. Keputusan eksperimen direkodkan dalam jadual

15.1.

Retort stand /

kaki retot Pendulum bob / ladung

String / tali

A

B

C

Diagram/ Rajah 15


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Table 15.1 / Jadual 15.1

(a) State the variables involved in the experiment.Nyatakan pemboleh ubah yang terlibat didalam eksperimen.

Manipulated variable

Pemboleh ubah manipulasi

Constant variable

Pemboleh ubah tetap

Responding variable

Pemboleh ubah bergerak balas

[3 marks]

(b) Using table 15.1 and the positions A, B, and C of the pendulum, define a complete

oscillation. Menggunakan jadual 15.1 dan posisi pendulum A ,B dan C definesikan ayunanlengkap.

. . [1 mark]

Experiment

Eksperimen

Length of pendulum

Panjang bandul

Time taken for 10 oscillations

Masa untuk 10 ayunan

A 10cm 10.0 s

B 20cm 20.0 s

C 30 cm 30.0 s


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(c) Using table 8.1, draw a graph to show the length of the pendulum against the time taken for

10 oscillations.

Menggunakan jadual 8.1 , lukiskan graf menunjukan panjang pendulum berkadar

masa untuk 10 ayunan.

[3 marks]


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(d) State one inference from the graph above.

Berdasarkan graf diatas , nyatakan inferen.

.[1 mark]

(e) A wall clock has a pendulum oscillating. How do we increase the rate of

oscillation of the clock?

Jam dinding yang mempunyai ayunan bandul. Bagaimanakah dapat ditingkatkan

kadar ayunan jam tersebut ?

.

.[1 mark]

(f) Calculate the time taken for one oscillation in experiment in table 15.1.

Kira masa yang diambil untuk membuat satu ayunan lengkap dalam eksperimen

dijadual 15.1.

Experiment

Eksperimen

Time taken for 1 complete ossilation in s

Masa 1 ayunan lengkap dalam s

A

B

C

[2 marks]

(g) State the relationship between the mass of the pendulum and the speed of oscillation.Nyatakan perhubungan di antara jisim bandul dengan kelajuan ayunan.

..

[1mark]

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Latih tubi T1