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SULIT

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Sains

Kertas 2

Mei20091 jam

PEJABAT PELAJARAN DAERAH PASIR GUDANGPEPERIKSAAN PERTENGAHAN TAHUN

TINGKATAN 1

2009

SAINS

Kertas 2

Satu jam tiga puluh minit

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

________________________________________________________________________

Kertas soalan ini mengandungi 14 halaman bercetak

INFORMATION FOR CANDIDATES

1. This question paper consists of two sections: Section A and Section B .

2. Write your answers in the spaces provided in the question paper.

3. Show your working, it may help you to get marks.

4. If you wish to cancel any answer, neatly cross out the answer.

5. The diagrams in the questions provided are not drawn to scale unless stated.

6. Marks allocated for each question or part question are shown in brackets.

7. The time suggested to complete Section A is 60 minutes and Section B is 30

minutes.

8. You may use a non-programmable scientific calculator.

9. Hand in all your answer sheets at the end of the examination

Section A

( 40 marks )

Answer all questions.

The time suggested to complete this section is 60 minutes.

1. Diagram 1 shows three laboratory apparatus.

(a) Name the apparatus(i) P:_____________________________________

(ii) Q;_____________________________________

(iii) R:_____________________________________

( 3 marks )

(b) Which apparatus do you use to measure(i) exactly 25 cm3 of alcohol:_____________________________________

(ii) volume of ;liquid up ;_____________________________________

( 2 marks )

(c) State the use of apparatus Q.

_____________________________________________________________________ _____________________________________________________________________

( 1 mark )2. Diagram 2 shows the measuring of the diameters of a beaker using two measuring tools, X and

Y.

a) Name the tools shown in the diagram.

i) X : _______________________

ii) Y : _______________________

( 2 marks )b) Identify the suitable tool (X or Y) to measure the following in the diagram.

i) Internal diameter of the beaker : ______________________

ii) External diameter of the beaker : ______________________ ( 2 marks )c) i) The internal diameter of the beaker is _______________________ cm.

ii) The external diameter of the beaker is ______________________ cm

( 2 marks )

3. The figure shows an animal cell.

a) Name the parts labeled P, Q and R.

P : _____________________

Q : _____________________

R :______________________

( 3 marks )

b) State the functions of the parts P, Q and R.

P :____________________________________________________________________

Q : ___________________________________________________________________

( 2 marks )

c ) The table below shows the differences between the animal cell and the plant cell.

Complete the table correctly.

Structure CharacteristicsAnimal cellPlant cell

ChloroplastAbsent

ShapeFixed

( 2 marks )

4. Diagram 3 shows pictures of three states of matter.

(a) Based on Diagram 3, label the states of matter for each of the pictures by using the following words.

(3 marks)

(b) Based on Diagram 3, draw a two-dimensional diagram to show the arrangement of particles in each state of matter.

(i) (ii) (iii)

(3 marks)

(c) Compare the movement of particles in each state of matter.

______________________________________________________________________________________________________________________________________ (2 marks)

5. Diagram 4 shows the positions of ethanol, mercury and pure water when poured into a gas jar simultaneously. The layers formed were labeled as X, Y and Z. M and N are two other substances that were added into the same jar.

Table 1 shows the densities of ethanol, mercury and pure water.

SubstanceDensity / g cm -3

Ethanol0.79

Mercury13.6

Pure water1.0

TABLE 1

(a) Define density.

___________________________________________________________

___________________________________________________________

( 1 marks )

(b) Based on the data in Table 1, identity these substances. (i) X : __________________________________________________

(ii) Y : __________________________________________________

(iii) Z : __________________________________________________

( 3 marks )

(c) Arrange M, N, X, Y and Z in descending order of density.

___________________________________________________________

( 1 marks )

(d) Name two technological advances that make use of the idea of density.

1. _________________________________________________________

2. _________________________________________________________

( 2 marks )6. Diagram 5 shows a submarine that floats and sinks in sea water.

DIAGRAM 5 (a) Name part X that is found in a submarine

_____________________________________________________________

( 1 marks )

(b) (i)State what happens when X is filled with sea water.

__________________________________________________________

__________________________________________________________

( 2 marks )

(ii) Does the density increase or decrease in 6 (b) (i) ?

__________________________________________________________

( 1 marks ) (c) What happens to the submarine when X is emptied ?

_____________________________________________________________

_____________________________________________________________

( 1 marks ) (d) A submarine works on the concept of density. What is the principle used for

a hot air balloon ?

_____________________________________________________________

( 1 marks )Section B

( 20 marks )

Answer all questions.

The time suggested to complete this section is 30 minutes.

7. The diagram 6 shows several organisms P, Q, R, S and T.

QR

S T(a) State one characteristic of any four of the organisms P, Q, R, S and T. P : ________________________________________________________

Q : ________________________________________________________

R : ________________________________________________________

S : ________________________________________________________

T : ________________________________________________________

( 4 marks )

(b) Classify organisms P, Q, R, S and T into two groups based on common

characteristics. Name the organisms belonging to each group.

Common Characteristics

Organism ( 4 marks )8. Diagram 7 shows the pendulum experiment.

The pendulum bob is displaced and it swings. The time taken for the pendulum to

make 20 complete swings is recorded in Table 2.

Length of pendulum,

(cm)Time taken for 20 oscillations (s)Time taken for 1 oscillations, T (s)

3022.4

4028.6

5033.8

6036.8

7038.8

TABLE 2(a) Complete Table 2 above by filling in the correct values of T.

(2 marks)(b) Suggest a suitable hypothesis.____________________________________________________________

(1 marks)

(c) State the variables of the experiment.

(i) Manipulated variable : _________________________________

(ii) Responding variable : _________________________________

(iii) Constant variable : _________________________________

(3 marks) (d) Draw the graph of T against l in the graph paper provided below.

( 3 marks )

(e) What is the inference of the experiment?

____________________________________________________________

(1 marks)

(f) What is the time taken for one oscillation if the length of pendulum is 45

cm?

____________________________________________________________ (2 marks)

Solid Gas Liquid

Diagram 2

P,Q,R,S and T

P

String

Retort

stand

Diagram 7

Tingkatan:

Nama:

EMBED Word.Picture.8

EMBED Word.Picture.8

Kod PemeriksaBahagianSoalanMarkah

PenuhMarkah

DiperolehA162637485766B78812Jumlah60

1.Tuliskan nama dan tingkatan anda pada ruang yang disediakan.

2.Kertas soalan ini adalah dalam bahasa Inggeris sepenuhnya..

3.Calon dikehendaki membaca maklumat di halaman 2 atau halaman 3

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