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Transcript of latih tubi pmr sains kertas 2

JABATAN PELAJARAN KEDAH DARUL AMAN

LATIH TUBI SAINS PMR KERTAS 2 ( SET 2 )

SEKTOR PENGURUSAN AKADEMIK

Set 2 , Latihtubi PMR 2009 ( Kump. Sederhana )

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Section A Bahagian A [ 40 markah ] [ 40 markah ] Answer all questions. Jawab semua soalan. 1 (a) Diagram 1 shows the parts of human ear. Rajah 1 menunjukkan bahagian telinga manusia.

B:

C:

X

A:

Diagram 1 Rajah 1 (i) On Diagram 1, label parts, A, B and C using the following words: Pada Rajah 1, labelkan bahagian, A, B dan C menggunakan perkataan berikut: Auditory nerve Saraf auditori Eardrum Gegendang telinga Ossicles Tulang osikel [ 3 marks ] [ 3 markah ]

(b)

State one function of X. Nyatakan satu fungsi X. .

______________________________________________________________ [ 1 mark ] [ 1 markah ]

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(c)

Draw lines to complete the pathway of sound wave into our ear. Lukis garisan untuk melengkapkan laluan gelombang bunyi ke dalam telinga.

Sound wave Gelombang bunyi

Pinna Cuping telinga

Auditory canal Salur telinga

Ossicles Osikel

Eardrum Gegendang telinga

[ 2 marks ] [ 2 markah ]

2

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2

(a)

Diagram 2.1 shows the growth curves of boys and girls based on body weight. Rajah 2.1 menunjukkan lengkok pertumbuhan bagi lelaki dan perempuan berdasarkan kepada berat badan..

A

B

C

X: Y:

Diagram 2.1 Rajah 2.1

(i)

On Diagram 2, label X and Y. Pada Rajah 2, labelkan X dan Y. [ 2 marks ] [ 2 markah ]

( ii )

At which stage is the rate of growth rapid? Pada peringkat yang manakah kadar pertumbuhan paling pesat?

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

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( iii )

Explain your answer in (a)(ii). Jelaskan jawapan anda di (a)(ii).

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

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

( iv )

Besides body weight, state another physical characteristic used to measure the rate of human growth. Selain daripada berat badan, nyatakan ciri fizikal lain yang digunakan untuk mengukur kadar pertumbuhan manusia.

........................................................................................................ [ 1 mark ] [ 1 markah ] (b) Observe Diagram 2.2 below. Perhatikan Rajah 2.2 di bawah.

Diagram 2.2/ Rajah 2.2 State the causes for the disease above.Nyatakan punca bagi penyakit di atas..

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

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3

[ 1 mark ] [ 1 markah ] Diagram 3 shows a substance P which is burning in a gas jar contains lime water. Rajah 3 menunjukkan bahan P dibakar di dalam balang gas berisi air kapur.

Cover

Burning spoon Air Substance P Lime water

Diagram 3 / Rajah 3

(a) (i) After a few minutes, colourless liquid droplets are formed at the wall of the gas jar. How to test the liquid droplets? Selepas beberapa minit, titisan cecair tidak berwarna terbentuk pada dinding balang gas. Bagaimanakah untuk menguji titisan cecair tidak berwarna tersebut?

[ 1 mark ] [ 1 markah ] (ii) What is the liquid in (a)(i) ? Apakah cecair dalam (a)(i) ?

.. [ 1 mark ] [ 1 markah ]

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(b )

(i)

What happen to the lime water in the gas jar? Apakah yang berlaku kepada air kapur dalam balang gas?

[ 1 mark ] [ 1 markah ] (ii) Explain your answer in b ( i ). Terangkan jawapan anda di b ( i ).

[ 1 mark ] [ 1 markah ] (c) State the factors needed for combustion which is shown by Diagram 3.1. Nyatakan faktor-faktor yang diperlukan untuk pembakaran seperti yang ditunjukkan di Rajah 3.1.

Diagram 3.1 / Rajah 3.1

(i)

P : ..

(ii)

Q: ...

(iii)

R : . 6

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[ 2 marks ] [ 2 markah ] 4.

Diagram 4 shows the structure of the sun. Rajah menunjukkan struktur matahari.

R S T Y

Diagram 4 / Rajah 4 (a) On Diagram 4, label one of the structures of the Sun with the following word: Pada Rajah 4, label satu struktur matahari dengan perkataan di bawah: Chromosphere Kromosfera Corona Korona Photosphere Fotosfera[ 1 mark ] [ 1 markah ]

(b) Y is the site for the nuclear fission in the Sun. Complete the diagram below to show nuclear fusion that take place at Y using the following words Y adalah tapak belahan nuclear di matahari. Lengkapkan rajah di bawah untuk menunjukkan belahan nuclear yang berlaku pada dengan menggunakan perkataan berikut. Heat energy Tenaga haba Four hydrogen atom Empat atom hidrogen Light energy Tenaga cahaya One helium atom Satu atom helium

+

+

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[ 4 marks ]

(c)

State one phenomenon that take place at photosphere. Nyatakan satu fenomena yang berlaku pada fotosfera.

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

5.

Diagram 5 shows a suction pump. Rajah 5 menunjukkan satu pelocok.

Diagram 5/ Rajah 5

. (a)

What is the function of a suction pump? Apakah fungsi pelocok? [ 1 mark] [ 1 markah ]

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(b)

What happens when the pumps is pressured onto the surface of sink as shown in Diagram 4? Apakah akan berlaku bila pelocok menekan permukaan sinki seperti ditunjukkan pada Rajah 4? .............. [ 2 marks ] [ 2 markah ]

(c)

What makes the suction pump to be attached strongly onto the surface of the sink after the step in (b)? Apakah yang menyebabkan pelocok melekat dengan kuat pada permukaan sinki selepas langkah dalam (b)?

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

(d)

What happens when the pump is pulled upwards after the step in (c)? Apakah yang akan berlaku bila pelocok ditarik ke atas selepas langkah di (c)?

.. ..

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. [1 mark ] [ 1 markah ]

(e)

Name one other tools in our daily life that uses the concept of air pressure? Namakah satu alatan kegunaan harian yang menggunakan konsep tekanan udara?

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

6.

Diagram 6 below shows a simple transformer which is made of two coils of wire wrapped around an iron core. Rakah 6 di bawah menunjukkan satu transformer ringkas diperbuat daripada dua lilitan wayar yang melilit suatu teras besi.

Coil X Gegelung X

Coil Y Gegelung Y

Diagram 6/ Rajah 6

(a)

What type of transformer is this? Apakah jenis transformer tersebut?

. [ 1 mark ]

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[ 1 markah ]

(b)

What is the purpose of this transformer? Apakah kegunaan transformer jenis ini?

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

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

..................................................................................................................... [ 1 mark ] [ 1 markah (c) What type of current is produced from the transformer? Apakah jenis arus yang dihasilkan dari transformer itu?

....................................................................................................................... [ 1 mark ] [ 1 markah ] (d) What is the name of coil X? Apakah nama gegelung X?

.. [ 1 mark ] [ 1 markah] (e) What is the name of coil Y? Apakah nama gegelung Y?

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

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(f)

Another type of transformer is formed when the number of turns of coils X and Y is reversed. Satu jenis transformer lain terbentuk bila bilangan lilitan gegelung X dan Y diterbalikkan. (i) What is the name of this transformer? Apakah jenis transformer ini?

............................................................................................................ [ 1 mark ] [ 1markah ] (ii) What is the usage of this type of transformer? Apakah kegunaan transformer jenis ini?

............................................................................................................ [ 1 mark ] [ 1 markah ] (iii) What is the different between the input voltage and the output voltage for this type of transformer? Apakah perbezaan antara voltan input dan voltan output bagi transformer jenis ini?

..

.

. [ 1 mark ] [ 1 markah ]

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Section B 20 marks Bahagian B ( 20 marka