bengkel sains 2011

BENGKEL MENJAWAB SOALAN SAINS PMR

KERTAS 1

DAN

KERTAS 2

OLEH : ZULHARISZAN BIN ABD MANAN

PERKARA-PERKARA ASAS YANG PERLU DIPATUHI

Jawapan hendaklah ringkas dan tepat ( straight to the point )

Menggunakan istilah yang betul dari segi ejaan dan sebutanKeutamaan diberikan kepada istilah yang digunakan dalam buku teksJawapan hendaklah mengikut kehendak soalan

KLU BIASA

Kebanyakan abjad yang digunakan dalam melabelkan gambarajah dapat membantu pelajar memberi jawapan

10 – 20 % jawapan boleh didapati daripada soalan,jadual dan gambarajah yang berkenaan

INFERENS

Inferens ertinya boleh menyatakan satu sebab kepada pemerhatian dengan betul ( Able to state one reason for the observation correctly )

DEFINISI SECARA OPERASI ( Operational Definition )

Boleh menyatakan definisi berdasarkan pemerhatian eksperimen dengan betul

( Able to state definition based on the observation of the experiment correctly )

Perkataan “proses” perlu dimasukkan.

Hypothesis

Boleh menyatakan hubungan antara pemboleh ubah dimanipulasikan dengan pemboleh ubah bergerak balas

( Able to state the relationship between manipulated variable and responding variable correctly )

KERTAS 1

BENGKEL MENJAWAB SOALAN SAINS PMR

Diagram above shows a hazard warning symbol.

A substance labeled with this symbol

A burns easilyB gives out harmful raysC causes damage to the skin and eyes upon contactD causes the skin to itch or become sore upon contact

STIMULUS - DIAGRAM

Pengetahuan

1

2. Which of the following energy changes are involved 2. Which of the following energy changes are involved when a car moves at night?when a car moves at night?

I I Light energyLight energy IIII Kinetic energyKinetic energy IIIChemical energyIIIChemical energy IVElectrostatic energyIVElectrostatic energy

AA I, II and IIII, II and IIIBB I, II and IV I, II and IV CC I, III and IVI, III and IVDD II, III and IVII, III and IV

ANEKAANEKA PILIHAN PILIHAN KOMPLEKS KOMPLEKS

Pengetahuan

ANEKAANEKA PILIHAN PILIHAN

3. Organ X has sensory cells that are sensitive to 3. Organ X has sensory cells that are sensitive to

chemicals in the gaseous form. chemicals in the gaseous form.

Which sense is related to organ X?Which sense is related to organ X?

AA The sense of sightThe sense of sight

BB The sense of tasteThe sense of taste

CC The sense of smellThe sense of smell

D D The sense of hearingThe sense of hearing

Kefahaman

Why will the ringing of the bell stop after some time? A The bell cannot function in the absence of airB All the sound waves are absorbed by the vacuum pumpC Sound waves cannot be transmitted in the absence of airD Sound transmission is prevented by the high air pressure outside

the jar

Electric bell

To vacuum pumpair

jar

To switch

4. The diagram shows an experiment to study sound transmission

AplikasiANEKAANEKA PILIHAN PILIHAN

5. The table below shows three different substances and their pH values

Which of the following statements are true?

I P changes a red litmus paper into blueII Q is a very corrosive substanceIII R can be pure waterIV R can be vinegar

Substance pH

P 5

Q 13

R 7

Kefahaman

ANEKAANEKA PILIHAN PILIHAN KOMPLEKS KOMPLEKS

A I, II, IIIB I,II, IVC II, III, IVD I, III, IV

6 . Which of the following plants have the characteristics 6 . Which of the following plants have the characteristics described above?described above?

I I sugar cane plantssugar cane plants II hibiscus plantsII hibiscus plants III III balsam plantsbalsam plants

IVIV durian plantsdurian plants

A I and II A I and II B III and IV B III and IV C I, II and III C I, II and III D II, III and IVD II, III and IV

Tap roots Has flowers Leaves with network veins

PengetahuanANEKAANEKA PILIHAN PILIHAN KOMPLEKS KOMPLEKS

Vitamin Function

X D Helps absorb calcium and phosphorus

Y E Maintains a healthy reproductive system

Z A Helps to ensure good night vision

8. The table above shows the functions of vitamins X, Y and Z. Which of the following food contains all three vitamins X, Y and Z?

A. egg B. carrot C. lemon D. yeast

STIMULUS - TABLES

Kefahaman

Carbon dioxide Water vapour Energy

9. The information above shows the materials that are produced in a process.

Name the process.

A RespirationB PhotosynthesisC CombustionD Eating

STIMULUS - LISTED

Kefahaman

10. Eskimos stay in igloos made of ice.

They can live in igloos because

A They wear thick clothesB Ice radiates heat C They have thick layer of fat to the air outside.D Ice does not lose heat by conduction

STIMULUS – BERIMAGINASI/APLIKASI

Aplikasi

KERTAS 2KERTAS 2

BENGKEL MENJAWAB SOALAN SAINS PMR

TIPS MENJAWAB PAPER 2TIPS MENJAWAB PAPER 2 Baca soalan bagus-bagus. Faham apa kehendak Baca soalan bagus-bagus. Faham apa kehendak

soalansoalan Gariskan kata kunci soalanGariskan kata kunci soalan Tengok markah yang diperuntukkan. Jawapan Tengok markah yang diperuntukkan. Jawapan

mesti relevan/sesuai dengan markah. Contoh : mesti relevan/sesuai dengan markah. Contoh : soalan 1 markah, jwpn semestinya ringkassoalan 1 markah, jwpn semestinya ringkas

Jangan ulang soalan dlm jawapan, jawab dengan Jangan ulang soalan dlm jawapan, jawab dengan ringkas dan padatringkas dan padat

GUNA PEN. LAKARAN DAN GRAF GUNA GUNA PEN. LAKARAN DAN GRAF GUNA PENSILPENSIL

BACA SOALAN, SEBAB DALAM SOALAN ADA BACA SOALAN, SEBAB DALAM SOALAN ADA JAWAPAN.JAWAPAN.

QUESTION NO 7 & 8

SCIENCE PROCESS SKILL

8. Diagram 8.1 Shows the apparatus set-up and the initial temperature reading of distilled water in an experiment. The distilled water is heated.

Record the initial temperature of the

distilled water

Diagram 8.1

Student should know how to read the reading of any measurement

28.5

(b) Table 8.1 shows the result of this experiment.

Time 2 4 6 8 10

Temperature / °C

50 70 90 100 100

State the variables involved in this experiment Table 8.1

(i) Manipulated variable - Time(ii) Responding variable – Temperature(iii) Constant variable – Type of water, volume of water,

rate of heating

Students must know WHAT YOU WANT TO CHANGE, (Manipulated)WHAT HAPPEN if you change it: (Response)What you DONT WANT TO CHANGE. (Control, Constant, Fixed)The meaning of each of these variables must be properly understood

Responding variable

Manipulated variable

(c) State a hypothesis based on the result in Table 8.1

Temperature depends on time

Hypothesis should be “derived” from the above stimulus. Acceptable answers are:-As time increases, temperature also increases orTime influence temperature

Hypothesis – Sesuatu pendapat yang dianggap benar tetapi belum dibuktikan –” I think – temperature will depend on time

Time 2 4 6 8 10

Temperature / °C 50 70 90 100 100

(d) For this part of the question, use the graph paper provided on page 21.

Time 2 4 6 8 10

Temperature / °C 50 70 90 100 100

It must be a line graph. The points should be marked properly with an X and not with a dot. The line should be curved nicely. However if the points are connected with straight line it is still accepted.

In this case the line should start at 32ºC, because the temperature of water is around 32 ºC.

Based on Table 8.1 draw a graph of temperature against time.

2 4 6 8 100

10

20

30

40

50

60

70

80

90

100

110

Tem

pera

ture

Time

x

x x

x

x

x

Y

Based on the table, draw a graph of the extension of the spring against the weight of the load..

0.2 0.4 0.6 0.8 1.0

0

1

2

3

4

5

6

7

Y

X

X

X

X

X

X

SEKIAN,TERIMA KASIH

SEMOGA ANDA BERJAYA……

GOOD LUCK

USAHA BERSUNGGUH-SUNGGUH DAHULU BARULAH BOLEH BERTAWAKKAL

THE ENDTHE END