PT3 SBP TRIAL 2015 SKEMA.

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BAHAGIAN PENGURUSAN SEKOLAH BERASRAMA PENUH DAN SEKOLAH KECEMERLANGAN

PENTAKSIRAN DIAGNOSTIK AKADEMIK SBP 2015: PERCUBAAN

PENTAKSIRAN TINGKATAN 3

SAINS

PERATURAN

PEMARKAHAN

______________________________________________________________________ _____ Peraturan pemarkahan ini mengandungi ? halaman bercetak .

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Question Rubric Mark 1. (a) Able to choose the correct processes to separate the mixture.

Answer:

Remark: 1 mark for each answer

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properties of substances.

Answer:

(i) False (ii) True (iii) False 3

JUMLAH 5 2. (a)(i) Able to circle the correct way of energy transfer through the

water

Answer:

Remark: 1 circle only for correct answer

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(ii) Able to circle the correct way of energy transfer through the copper wall

Answer:

Remark: 1 circle only for correct answer

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Answer: Condensation 1

(ii) Able to explain how the mirror can stay clear.

Sample answer: P1: Water droplets absorb heat from the (electrical) heater P2: Water droplets change into water vapour *** Accept any reasonable answer

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JUMLAH 5 3. (a) Able to label the parts of the organ according to their

functions.

Answer: R S

Note: 2 correct answers – 2 marks 1 correct answer – 1 mark 0 correct answer – 0 mark

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(b) Able to complete the flow chart below to show the path of light rays from the object entering in the organ.

Answer:

Note: 4 correct answer – 2 marks 3 correct answer – 1 mark 2 correct answer or less – 0 mark

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correct long-sightedness.

Suggested answer: 1. Using contact lens 2. Laser treatment 3. Using (spectacles) with convex lens

Reject: Use spectacles

2

JUMLAH 5 4. (a) Able to state the class of animal with their correct group

Answer :

mammal/ mamalia amfibian / amfibia

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(b) Able to match Y and Z with the correct example of flowering plants

Answer :

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Sample answer : P1: Corals serve as breeding and nursery grounds for marine life P2: Coral is a habitat for marine life that can protect marine life

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TOTAL 6 5. (a)(i) Able to state which mixture is solution.

Answer: Blackcurrant juice 1

(ii) Able to state which mixture is suspension.

Answer: Iced chocolate 1

(iii) Able to write true or false for the following statements.

Answer: True False 2

(b) Able to explain how to prepare the saturated sugar solution faster.

Sample answer: P1 – mix maximum amount of sugar with water P2 – heat the sugar solution until all sugar dissolved. *** Accept any reasonable answer

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TOTAL 6

Y Z

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SULIT 55 Sains Ogos 2015

6. (a)(i) Able to name the type of support system of the plant shown in the diagram

R: Buttress root S: Tendrils .

P1: To support the weight of plant S P2: To enable plant S to obtain light (for photosynthesis)

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(b) Able to describe how the special structure are developed and its function to maintain the sustainability of mangrove forest.

P1: The root are branching from the main stem P2: To support its stability in muddy water *** Accept any reasonable answer

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TOTAL 6 7. (a) Able to calculate the force needed to lift the wheelbarrow.

Answer:

Note : Correct substitution value in the formula – 1 mark Correct force value with correct unit – 1 mark

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(b) Able to suggest one best way to use the wheelbarrow with justification

Suggested answer: i. P1: Encik Rahmat has to put his hand at the end of the handle ii. P2: It will increase the distance between effort and fulcrum

Note: 1 best way – 1 mark 1 explanation – 1 mark

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(c) Able to explain which workers will fell exhausted first

Answer: i. P1: Worker A 2

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ii. P2: Distance between force and fulcrum in worker A is less than iii. worker B.

Note : Correct worker – 1 mark 1 explanation – 1 mark

TOTAL 6 8 (a) Able to fill in the blanks to show the correct movement of air

Answers:

i) Alveoli / Alveolus ii) Bronchioles/ Bronkiol iii) Bronchus/Bronkus iv) Trachea / Trakea

Remark: 4 corrects – 2 marks 3 corrects – 1 mark 2 @ 1 correct – 0 mark

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heart rate and give an explanation

Answer: P1: Heart rate increases because heart pump more blood to the whole body

P2: Respiration rate increases to supply more oxygen and eliminate carbon dioxide

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(ii) Able to give the relationship between respiratory rate and oxygen concentration and give explanation

Answer: P1: Respiration rate increases while oxygen concentration decreases.

P2: Respiration rate increases to supply more oxygen while

oxygen concentration decreases because oxygen is used for respiration cell to produce energy

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(c) Able to predict the changes of substance in the red blood cell

during exercise. Answer: Carbon dioxide : Increases/ Bertambah Glucose : Decreases/ Berkurang

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9. (a) Able to explain the steps that must be taken by the hospital’s staff before the blood can be given to Amin.

Sample answer: 1. Interview the donors for their medical history 2. Screening the donated blood for compatibility with Amin 3. Screening the donated blood to make sure the blood free from

blood transmitted diseases *** Accept any reasonable answer .

the blood donated by Amin’s family member

Suggested answer: 1. P1: Yes if we use plasma component from the donated blood. 2. P2: To increase his ability of the blood to clot. 3.

Note: 1 fact – 1 mark 1 correct explanation – 1 mark

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(c)(i) Able to state about Amin’s blood

Sample answer : - Red blood cell count / white blood cell count Amin’s still in normal range// - Haemoglobin / platelet count lower than the normal range. 2

(ii) Able to predict and explain what may happen to Amin when the reading of his white blood cell count increases.

Sample answer : P1: Amin may got bacterial infection / fever/ body traumatize P2: Increase the immunization in Amin’s body//

The white blood cells are fighting against infections

Note: 1 fact – 1 mark 1 correct explanation – 1 mark

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10. (a)(i) Able to indicate the position of the kidney stone in the diagram

Answer:

Remark: Mark either one part only

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Answer: From mineral salt 1

(b) Able to describe the step to be taken in order to avoid the risk of kidney stone diseases.

Sample answer: P1 – Drink a lot of water P2 – to decrease the concentration of urine *** Accept any reasonable answer.

Remarks: Must have 1 point for the step & 1 point description.

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(c) Able to describe how does water intake can help prevent recurrence of kidney stones formation.

Answer: P1 – concentration of urine decrease P2 – no mineral salt will accumulate (in the urinary system) *** Accept any reasonable answer

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(d) Able to give a correct opinion and explain the answer.

Sample answer: P1 – Can get kidney stone again. P2 – Fast food contain high amount of sodium/ salt *** Accept any reasonable answer.

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Remark: Must have 1 point for correct opinion & 1 point explanation.

TOTAL 8 11 (a)(i) Able to identify the correct part for tubal ligation

Answer : 1

(ii) Able to state how ligation method helped Mrs. Lim to prevent pregnancy

Answer : Ligation prevent the sperm to meet the ovum // To prevent the fertilised ovum to move from ovary to uterus

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the graph

Sample answer: P1 : IUCD P2 : IUCD prevent fertilized ovum to implant against the wall of uterus

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