soalan ramalan 2012 science

SOALAN ULANGKAJI SPM 2012 55 SOALAN ULANGKAJI SPM 2012JA

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ScienceAnalysis

[1511/1][1511/2]

CHAPTER

2007 2008 2009 2010 2011

P1P2

P1P2

P1P2

P1P2

P1P2

Sec A

Sec B

Sec C

Sec A

Sec B

Sec C

Sec A

Sec B

Sec C

Sec A

Sec B

Sec C

Sec A

Sec B

Sec C

1 Scientific Investigation - - - - - - - - - 1 - - - - - - - - - -2 Body Coordination 3 - 1 - 3 - 1 - 3 - 1 - 4 1 1 - 4 - 1 -3 Heredity and Variation 5 - - - 4 1 - - 3 - - 1 4 - - - 4 1 - -4 Matter and Substances 5 1 - - 4 1 - - 4 - - - 4 - 1 - 4 - - -5 Energy and Chemical Changes 3 - 1 - 3 - - 1 4 1 - - 3 - 1 - 3 1 - -

6 Nuclear energy 2 - 1 - 2 - 1 - 2 - 1 - 4 - - - 3 - 1 -7 Light, Sight and Colour 3 1 - - 5 - - 1 3 1 - - 3 - - 1 3 - - 18 Chemicals In Industry 2 - - 1 2 - 1 - 3 - 1 - 2 - - 1 3 - - -9 Microorganisms and Their Effects on Living Thing

5 1 - - 4 1 - - 5 - - 1 5 - - - 3 1 - -

10 Nutrition 2 - 1 - 5 - - - 4 - - - 4 - 1 - 3 - - 111 Perservation and Conservation of the Environment

2 - - - 4 - - - 4 - - - 2 - - 1 3 - 1 -

12 Carbon Compound 4 1 - - 3 - 1 - 3 1 - - 3 2 - - 5 - - 113 Motion 5 - 1 - 4 1 - - 5 - - 1 5 1 - - 4 1 - -14 Food Technology and Production 4 - - 1 2 - - 1 2 - 1 - 2 - - - 3 - 1 -

15 Synthetic Materials in Industry 3 - - - 3 - - - 2 - 1 - 2 - - - 3 - 1 -

16 Electronics and Information and Communication Technology (ICT)

2 - - 1 2 - 1 - 3 - - - 3 - 1 - 2 - - -

TOTAL 50 4 5 3 50 4 5 3 50 4 5 3 50 4 5 3 50 4 5 3

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Science Paper 1 [1511/1]

1 Which of the following is an example of voluntary action ?

A Peristalsis B Knee-jerking C Coughing D Writing

2 Diagram 1 shows four endocrine glands in the human body.

Diagram 1

Which of the glands, P, Q, R or S, functions when drinking a lot of water ?

A P B Q C R D S

3 What type of disease will a person suffer from if he has deficiency of insulin ?

A Goitre B Diabetes C Anorexia D High blood pressure

4 Which of the following shows the characteristic of Siamese twins ?

A They are non-identical twins. B They grow in separate placentas. C They may share certain organs like heart and brain. D They have different appearances.

This question paper consists of 50 questions. Each question is followed by four options A, B, C and D. Choose one correct answer for each question. Answer all the questions.

5 The following shows the characteristics of a person.

Which of the following diseases does the person suffer from?

A Haemophilia B Down’s syndrome C Turner’s syndrome D Parkinson disease

6 Which of the following is an example of hereditary diseases caused by sex-linked genes ?

A Down’s syndrome B Albinism C Sickle cell anaemia D Haemophilia

7 A man with curly hair (Kk) marries a woman with curly hair (Kk). If the curly hair gene is dominant (K) while the straight hair gene is recessive (k), what would be the pair of genes for their child who has curly hair ?

A KK B Kk C KK or Kk D Kk or kk

8 Diagram 2 shows the changes in the state of matter.

Diagram 2

What is process X ?

A Condensation B Sublimation C Melting D Boiling

PROCESS X

57 SOALAN ULANGKAJI SPM 2012JA

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9 Which of the following is true about isotopes ?

A Isotopes have the different chemical properties. B Isotopes have the same melting point and boiling point. C Isotopes have the same proton number but different

nucleon numbers. D Isotopes have the same number of protons but different

number of neutrons.

10 Diagram 3 shows the cooling of a substance.

Diagram 3

What happens during the time period from X to Y ?

A The particles move freely. B The temperature increases drastically. C The substance is in a liquid-solid state. D Heat is absorbed from the surroundings.

11 Diagram 4 shows the symbol of atom Y.

Diagram 4

How many protons, electrons and neutrons are found in atom Y ?

12 Diagram 5 shows an electrolytic cell.

Diagram 5

Which of the following is true about the electrolytic cell ?

A Electrode X functions as the cathode of the cell. B Anions move towards electrode Y during electrolysis. C Solution Z acts as an electrolyte to allow electric

current to flow through it. D The chemical energy is produced through electrolysis

when molten naphthalene is used as solution Z.

13 The following equation shows a process occurs under sunlight in plants.

What is process X?

A Translocation B Transpiration C Photosynthesis D Germination

14 Diagram 6 shows an experiment carried out to study the heat changes in a chemical reaction.

Diagram 6

Based on the observation, which of the following is true about the reaction occurred ?

A Heat energy is absorbed from the surroundings. B The products formed contain higher energy content

than the reactants. C The reaction occurs is exothermic. D The contents in the test tube become cool.

19

9

Y


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15 Diagram 7 shows the arrangement of apparatus for purification of copper which is set up by a student.

Diagram 7

He made a mistake in his arrangement. What should he do in order to obtain pure copper metal ?

A Interchange the position of the impure copper plate and pure copper plate

B Change the electrolyte hydrochloric acid to copper(II) sulphate solution

C Replace impure copper plate with zinc plate D Heat the electrolyte

16 Diagram 8 shows the nuclear fission of substance X

Diagram 8

What is substance K?

A Carbon-14 B Phophorus-32 C Iodine-31 D Uranium-235

17 Which of the following shows the correct path of energy transformation when generating electricity in a nuclear reactor ?

A Heat energy → nuclear energy → kinetic energy → electrical energy

B Heat energy → kinetic energy → nuclear energy → electrical energy

C Nuclear energy → heat energy → kinetic energy → electrical energy

D Nuclear energy → kinetic energy → heat energy → electrical energy

18 How does nuclear fusion differ from nuclear fission ?

A It produces radioactive radiations. B It requires very high temperature to provide sufficient

kinetic energy to the nuclei. C It occurs when an electron bombards an unstable

nucleus atom. D It can only produce nuclear energy.

19 Diagram 9 shows the overlapping of red, blue and green lights on a white screen.

Diagram 9 What colours can be seen in areas X, Y and Z ?

20 Diagram 10 shows a ray diagram of a lens. Which of the following, A, B, C or D, is the focal point of the lens?

Diagram 1021 Diagram 11 shows an experiment carried out to study the

image formed in a pinhole camera.

Diagram 11

What will happen to the image if the bulb is moved away from the pinhole camera ?

A The image becomes smaller. B The image becomes blurred. C The image becomes smaller and blurred. D There is no image formed.

X Y ZA Cyan Magenta YellowB Yellow Cyan MagentaC Magenta Yellow CyanD Magenta Cyan Yellow

GREENBLUE

RED


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22 Diagram 12 shows the image formed in a pinhole camera.

Diagram 12

Which of the following could be the object ?

A C

B D

23 The following word equation represents a reaction to produce an ammonium salt fertiliser in industry.

What is X ?

A Ammonium phosphate B Ammonium nitrate C Ammonium sulphate D Ammonium chloride

24 Diagram 13 shows the arrangement of particles in an alloy.

Diagram 13

Why is atom H added to the metal ?

A To increase the hardness of the metal B To lower the boiling point of the metal C To increase the rate of reaction D To enable the metal to conduct electricity

H

25 Diagram 14 shows four microorganisms, W, X, Y and Z.

Diagram 14

Which of the following classifications are correct?

A B C D

26 An individual is diagnosed with Hepatitis A. Which part of his body could be infected?

A Lung B Intestine C Liver D Brain

27 The following information shows some diseases caused by microorganisms.

Which of the following diseases cannot be prevented by vaccination ?

A P and S B P and R C Q and R D Q and S

28 A person suffered from chickenpox when he was young. After 20 years, he

A has to receive a chickenpox vaccine B has the immunity against the infection C needs to receive an injection of antiserums D has to keep distance from those infected with

chickenpox

Viruses FungiW and Y X and ZW and Z X and YX and Z W and YX and Y W and Z


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29 Which of the following can be used to control the population of adult mosquitoes ?

A Rear fish in ponds B Spray insecticide C Spray oil on the surface of water in drains D Pour out water from the vase

30 Which of the following shows the benefit of having healthy eating habits?

A To prevent us from getting any infection B To maintain the body’s health C To keep the body figure D To increase the beauty of a person

31 Diagram 15 shows a food pyramid.

Diagram 15

Which of the following is true about how the food pyramid can guide us to have healthy diets ?

A Consume a lot of food rich in fats and sweets which is arranged on top of the pyramid

B Consume more meat and fish than milk C Consume vegetables and fruits occasionally D Consume the sufficient amounts of breads and cereals

everyday

32 A young woman refrains herself from eating food to maintain her slimy body. Her body weight decreases drastically. What disease could she suffer from ?

A Heart disease B Thrombosis C Anorexia D High blood pressure

33 The following information shows some materials containing a chemical which has a negative effect on the environment.

What is the chemical and its negative effect ?

A B C D

34 Which of the following processes decreases the carbon dioxide content in the atmosphere ?

A Combustion B Respiration C Photosynthesis D Decomposition

35 The following information shows the list of organisms found in a garden habitat.

Which of the following shows the correct food chain of the habitat ?

A Caterpillar → plants → bird → snake B Plants → caterpillar → bird → snake C Plants → caterpillar → snake → bird D Snake → bird → caterpillar → plants

Chemical Negative effectCarbon dioxide Global warming

Chlorofluorocarbon Thinning of the ozone layerSulphur dioxide Acid rain

Mercury Food poisoning


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36 Table 1 shows the decrease population in fish in a fishing area from the year 2002 to 2006.

Table 1 Which of the following methods is suitable to solve this

problem ? A Restricts the use of drag nets B Stops fishermen from fishing in that area C Encourages fishing during breeding season D Captures the young fish to breed in fish ponds

37 What elements can be found in an alcohol ?

A Carbon and oxygen B Carbon and hydrogen C Carbon, oxygen and nitrogen D Carbon, oxygen and hydrogen

38 Which of the following atoms can be added to rubber to make it stronger ?

A Oxygen atom B Nitrogen atom C Hydrogen atom D Sulphur atom

39 Which of the following objects has the greatest momentum ?

A A 10 kg object moving at a velocity of 20 m s-1

B A 15 kg object moving at a velocity of 35 m s-1

C A 20 kg object moving at a velocity of 25 m s-1

D A 25 kg object moving at a velocity of 15 m s-1

40 Diagram 16 shows the flow of air over an object.

Diagram 16 Which of the following statements is true ?

A The flow of air at area S is slower than at area Q. B The flow of air at area P is faster than at area R. C The air pressure at area P is higher than at areas Q and R. D The difference in pressure at area P and area R to cause

the object move downwards.

P

R

SQ

Year Population of fish 2002 600 2003 550 2004 460 2005 430 2006 290

41 Diagram 17 shows a Bernoulli’s tube.

Diagram 17

Arrange the water pressure at points X, Y and Z from the lowest to the highest.

A X → Y → Z B X → Z → Y C Y → X → Z D Z → Y → X

42 A man drives his car for a distance of 2 km for 40 seconds. What is the speed of the car ?

A 0.05 m s-1

B 20 m s-1

C 50 m s-1

D 80 m s-1

43 What type of food which can be processed through irradiation to kill microorganisms ?

A Potatoes B Coffee powder C Fish D Meat

44 The following information shows three methods used to process food.

What is the disadvantage of these methods ?

A They spoil the taste of food. B They destroy food nutrients. C They cannot preserve food for a long time. D They do not sterilise food.

45 Why can the milk only be kept for a few days even it has been pasteurized ?

A Because the enzymatic reaction occurs in the milk B Because the bacterial spores are still in the milk C Because the hot weather outside will cause it to spoil D Because microorganisms from the air change the milk

into acid when they enter the milk

l Coolingl Freezingl Freeze-drying


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46 Which of the following is the reason to produce quality breeds through cross-breeding ?

A To produce breeds with miniature fruits B To produce breeds with different gene contents C To produce breeds with more nutritional values D To produce breeds with high resistance to diseases

47 The windscreen of a car is made of ………………… A Polystyrene B Perpex C Epoxy resin D Polyvinyl chloride

48 Which of the following shows the similarity between thermoplastic and thermoset ?

A Both dissolve in organic solvents. B Both are resistant to heat. C Both are good electrical insulators. D Both can be recycled.

49 Diagram 18 shows a schematic diagram of a radio receiver system.

Diagram 18

What are X and Y ?

X Y A Aerial Tuner circuit B Tuner circuit Aerial C Amplifier circuit Tuner circuit D Tuner circuit Amplifier circuit

50 Diagram 19 shows the transmission of information between the Earth satellite station and communication satellite in space.

Diagram 19

What is the function of P ?

A Acts as carrier waves B Increases the frequency of wave C Strengthens the signals received D Changes the signals into sound waves

END OF QUESTION PAPER

Earth satellite station Communication satelliteTransmitted

through P

Receiver aerial

Detectorcircuit LoudspeakerX Y


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Science Paper 2 [1511/2]

Section A[20 marks]

Answer all the questions in this section.

1.

Diagram 1 Diagram 2

In experiment A and B above, the initial temperature of 100 cm3 of water is measured and recorded as 30oC. Then 10 gram of substance X is added to the first beaker. The mixture is stirred and the temperature of the mixture is recorded as shown in diagram I above. The experiment is repeated by adding 10 g of substance Y into 100 cm3 of water. The temperature of the mixture is recorded as shown in diagram 2.

(a) Record the temperature of both experiments and then calculate the change in temperature of both experiments. Record

your answers in the Table 1.

Table 1[2 marks]

(b) In the experiment, state the (i) manipulated variable. _______________________________________________________ (ii) responding variable. _______________________________________________________

[2 marks]

(c) What inference can you make from the result of the experiment? ________________________________________________________________________

[1 mark]

2 Diagram 3 shows an experiment which is carried out to study the reactivity of sodium, calcium and copper with water.

Diagram 3

(a) State the hypothesis that can be made from this experiment. _________________________________________________________________________ [1 mark]

Gas

Metal

Test tube

Water + Phenolphalein indicator

Experiment Initial Temperature (oC)

Temperature of mixture (oC)

Change in temperature (oC)

A 30

B 30


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(b) State the variables in this experiment. (i) Manipulated variable: _________________________________________________________________________ [1 mark] (ii) Responding variable: _________________________________________________________________________ [1 mark]

(c) What is the reason for adding phenolphthalein indicator into the water? _________________________________________________________________________ [1 mark] (d) State the equation for the reaction between sodium and water. _________________________________________________________________________ [1 mark]

3 In an experiment, a bacterium, Basillus subtilis, is cultured in two Petri dishes containing nutrient agar for five days at 28 °C and 37 °C respectively. The result of the experiment is shown in Table 2.

Table 2

(a) Using data in Table 2, draw two curves to show the number of bacterial colonies against time, for the Petri dish kept at (i) 28 °C (ii) 37 °C

[2 marks]


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(b) What is the relationship between the number of bacterial colonies and time? ________________________________________________________________________ [1 mark] (c) What can you conclude from the graph drawn in (a)? ________________________________________________________________________ [1 mark] (d) Predict the number of bacterial colonies formed when the Petri dish is kept in an oven at a temperature of 70 °C? ________________________________________________________________________ [1 mark]

4 Diagram 4 shows an experiment to study the relationship between momentum and mass. Trolley X is gently pushed down with 150 g weight and this experiment is repeated by using trolley Y with 500 g weight.

(a) State the variables in this experiment.

(i) Constant variable: _________________________________________________________________________ [1 mark]

(ii) Manipulated variable: _________________________________________________________________________ [1 mark]

(b) Predict the velocity of trolley X and trolley Y from the plane. _________________________________________________________________________ _________________________________________________________________________ [1 mark]

(c) What is the relationship between mass and the momentum of the object? _________________________________________________________________________ _________________________________________________________________________ [1 mark]

(d) Why does trolley Y need a larger distance to stop compared to trolley X? _________________________________________________________________________ _________________________________________________________________________ [1 mark]

Diagram 4


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X

Y

Z

Section B[30 marks]

Answer all the questions in this section.

5 Diagram 5 shows a type of cell.

Diagram 5

(a) What type of cell shown in diagram 5? ________________________________________________________________________ [1 mark] (b) Name the structures labelled.

(i) X:___________________________________________________________________ (ii) Y:___________________________________________________________________ (iii) Z:___________________________________________________________________ [2 marks]

(c) Why is structure labelled Y important in the nervous system? ________________________________________________________________________ [2 marks]

6 Diagram 6 shows a simple voltaic cell. (a) State the energy transformation occurs in a simple voltaic cell. ________________________________________________________ [1 mark]

(b) State the function of galvanometer used in this experiment.

________________________________________________________ [1 mark]

(c) (i) What will happen to the cell if the zinc plate is replaced with carbon plate?

________________________________________________________ [1 mark] (ii) Give a reason for your answer in (c)(i). ________________________________________________________ [2 marks]

(d) Give an example of chemical cell which applies the principle of voltaic cell. _______________________________________________________________________________ [1 mark]

Diagram 6


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7 Diagram 7 shows an experiment carried out to study the dispersion of white light.

Diagram 7

(a) State the colours formed on the screen from P to Q. _________________________________________________________________________ [1 mark] (b) Based on the observation in the above diagram, which light is (i) the most refracted? _________________________________________________________________________ [1 mark] (ii) the least refracted? _________________________________________________________________________ [1 mark]

(c) (i) If a red filter is placed in front of the screen, what can be observed on the screen? _________________________________________________________________________ [1 mark] (ii) Give a reason for your answer in (c)(i). _________________________________________________________________________ [1 mark]

(d) State one natural phenomenon that is related to the dispersion of light. _________________________________________________________________________ [1 mark]

8 Diagram 8 shows three types of processed food.

Diagram 8

(a) State the method used to process food

(i) X: _____________________________________________________________ (ii) Y: _____________________________________________________________ (iii) Z: _____________________________________________________________ [2 marks]

White screen P

QGlass prism

ZX Y


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(b) Among the methods stated in (a), which method can kill microorganisms in food? ________________________________________________________________________ [1 mark] (c) State one food additive used to preserve food Z . ________________________________________________________________________ [1 mark]

(d) State one advantage of method in (a)(i) when compared with the method in (a)(iii). ________________________________________________________________________ [1 mark]

9 Diagram 9 shows the structures of two types of plastic.

Diagram 9

(a) State the type of plastic for plastic X and plastic Y. (i) Plastic X: _____________________________________________________________ [1 mark] (ii) Plastic Y: _____________________________________________________________ [1 mark] (b) Suggest one example for plastic X and plastic Y. (i) Plastic X: _____________________________________________________________ [1 mark] (ii) Plastic Y: _____________________________________________________________ [1 mark] (c) State one similarity in the property of plastic X and plastic Y. ________________________________________________________________________ [1 mark] (d) Give one difference between plastic X and plastic Y. ________________________________________________________________________ [1 mark]


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Section C[20 marks]

Answer Question 10 and either Question 11 or Question 12.

10 Study the following statement.

You are given an aluminium block and a duralumin block. (a) Suggest a hypothesis to investigate the above statement. [ 1 mark ] (b) Describe an experiment to test your hypothesis in (a) based on the following aspects.

(i) Aim of the experiment [ 1 mark ] (ii) Identification of variables [2 marks] (iii) List of apparatus and materials [ 1 mark ] (iv) Procedure or method [4 marks] (v) Tabulation of data [ 1 mark ]

11 (a) State two differences between the following methods of sterilisation. (i) Boiling and autoclaving (ii) Antiseptics and disinfectants [4 marks] (b) Diagram 10 shows three diseases that can be prevented by injecting suitable vaccines.

Study the above diseases. You are required to develop a concept of a vaccine.

You answer should be based on the following aspects:• Identifytwo common characteristics of a vaccine• Developaninitialconceptofavaccine• Giveone example of a disease which can be prevented through vaccination and one which cannot prevented through vaccination• Give one example of a vaccine

[6 marks]

12 (a) State one function each for four types of chemical substances that are used in food by giving a suitable example. [4 marks] (b) Diagram 11 shows three types of food.

Study the above food carefully. Explain how you develop a concept based on the above diagram.

Your answer should be based on the following

aspects: • Identifytwo common characteristics • Developaninitialconcept • Giveanotherexampleandonenon-example • Explaintheactualconcept [6marks]

Diagram 10

Diagram 11

END OF QUESTIONS PAPER

soalan ramalan 2012 science

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