skema science k2 tov t2 2011

55/2

JABATAN PELAJARAN NEGERI SELANGORMAJLIS PENGETUA SEKOLAH MENENGAH

PROGRAM PENINGKATAN PRESTASI AKADEMIKPEPERIKSAAN AKHIR TAHUN TINGKATAN DUA TAHUN 2011

PERATURAN PEMARKAHAN

SCIENCE PMR55/2

PPPA JPS 2011 : PEPERIKSAAN AKHIR TAHUN

TINGKATAN 2 TAHUN 2011

55/2 ©2011 Hak Cipta Jabatan Pelajaran Negeri Selangor

MPSM

2

QuestionSoalan

Mark SchemeSkema Pemarkahan

MarksMarkah

1 (a) Able to identify the areas of human tongue that respond to different taste.

Answer:

P : bitterQ: sourR: sweet

111

3

(b) Able to match the taste of food and with its example.

Answer:

1

1

1

3


PERATURAN PEMARKAHAN SCIENCE PMR 55/2 PPPA JPS 2011 – TOV TINGKATAN 2 2011

3

QuestionSoalan


MarksMarkah

TOTAL 6

2 (a) Able to state gases found in the air according the the percentages of the gases.

Answer:

1

1

1

3

(b) Able to state two processes that need oxygen.

Sample Answers:i.Combustionii Respirationiii Germination of seed ( Any two )

2 2

(c) Able to state the gas from the diagram given.

Answer:

Oxygen

1 1

TOTAL 6

3 (a) Able to state how many food chains are there in the food web. Answer:

Three

1 1

(b) Able to state the producer. Answer:

Paddy plant

1 1


4

QuestionSoalan


MarksMarkah

(c) Able to state the producer. Answer:Able to construct two food chains.

Sample Answers:

(i) Paddy plant Rat Snake /(ii) Paddy plant Grasshopper Frog Snake /(iii) Paddy plant Grasshopper Chicken Snake

(Any two)

11 2

(d) Able to predict what happen to the population of rats if population of snakes decreased

Answer:

Population of rats will increase 1 1

(e) Able to state the biological control.

Answer:

Snake 1 1

TOTAL 6

4 (a) (i) Able to state the situation correctly.

Answer:

P

1 1

(ii) Able to state the reason for situation.

Answer:

Because the sea water level in P is more than Q.

1 1

(b) (i) Able to state the correct position of glass.

Answer:

Between water and mercury

1 1


5

QuestionSoalan


MarksMarkah

(ii) Able to state reason for kerosene float on water.

Answer:

Because kerosene is less dense than water

1 1

(c) (i) Able to suggest a way for plasticine float on water.

Sample Answers:

i. Shape it into a bowl ii.Make it flatiii.Flatten the plasticine(Any one answer)

1 1

(ii) Able to state the reason for situation in 4(c)(i).

Answer:

To displace a large volume of water which is equal to its own weight// it has large surface area for water to act on it.

1 1

TOTAL 6

5 (a) (i) Able to state the name for method P and Q.

Answer:

P: DistillationQ: Filtration

11

2

(ii) Able to state substance that is removed from water in method Q.

Answer:

Suspended coarse particles.

1 1

(iii)

Able to compare the end product of water purification between method P and method Q.

Answer:

(End product) set Q still has dissolved substance// mineral salts// microorganism ( but for set P only contain pure water)

1 1


6

QuestionSoalan


MarksMarkah

(b) (i) Able to state which of the liquid is pure water

Answer:

S

1 1

(ii) Able to state the reason for answer in 4(b)(i).

Answer:

Because its boiling point is 1000C /freezing point is 0oC.

1 1

(iii)

Able to state the purpose of adding table salts to the ice cubes in set A.

Answer:

To lower the freezing point of the ice cubes.1 1

(iv) Able to state what happens to the water molecules when water is cooled from room temperature until it freezes.

Answer:

It will lose energy/ slow down in their motion/ come close into one another.1 1

TOTAL 8

6 (a) (i) Able to explain how the frictional force is acting on the box. Answer:

The frictional force act opposite// against the direction of the movement of the box.

1 1

(ii) Able to calculate power. Answer:

Power = ( 800N ) x 3m 60 = 2400 60 = 40 Watt

1

1

2


7

QuestionSoalan


MarksMarkah

(iii)

Able to suggest a way to help the boy to reduce the effort to push the box up. Sample Answers:

use ball bearings / wheels / curling rod

1 1

(b) (i) Able to state which tyre is more suitable to drive in a muddy area.

Answer:

Tyre A

1 1

(ii) Able to give reason for answer 6 (b) (i) Answer:

Pt 1 : The surface area has more threads / is rougher Pt 2 : to increase the frictional force / grip the surface better

11

2

(d) (i) Able to state how the airplane able to move smoothly through the moving air. Answer:

Because has a stream-lined body // has an aerodynamic shape

1 1

TOTAL 8

7 (a) Able to classify the food into two groups based on their importance to health.

Sample Answers:i.

Classification based on importance to health

Pengelasan berdasarkan kepentingannya kepada kesihatan.

Samples of the foodContoh makanan

For Healthy skinUntuk kullit yang sihat

Tomato, cheese, carrot, orange,mustard

Not for Healthy skinBukan untuk kulit yang sihat

chicken

1

4


8

QuestionSoalan


MarksMarkah

ii.Classification based on importance

to healthPengelasan berdasarkan

kepentingannya kepada kesihatan.


For Healthy bone Untuk tulang yang sihat

Chicken, cheese

Not for Healthy boneBukan untuk tulang yang sihat

Tomato, carrot, orange, mustard

iiiClassification based on importance




For blood flowUntuk pengaliran darah

Cheese, tomato

Not for blood flowBukan untuk pengaliran darah

Carrot,orange,mustard,chicken

iv.Classification based on importance




For resistance against diseasesUntuk daya tahan penyakit

Orange, mustard

Not for resistance against diseasesBukan untuk daya tahan penyakit

Tomato, carrot, cheese, chicken

vClassification based on importance




For good visionUntuk penglihatan yang baik

Carrot

Not for good visionBukan untuk penglihatan yang baik

Tomato,mustard, cheese, chicken,orange

1

1

1

1


9

QuestionSoalan


MarksMarkah

(b) Able to write one hypothesis.

Answer:

The more the consumption of tomato and carrot the healthier the skin (due to the presence of necessary vitamins.)

1 1

(c) Able to record the data correctly

Answer:

2 oranges squeezed,

Volume of juice collected = 9 ml

3 oranges squeezed,

Volume of juice collected = .......15.... ml

6 oranges squeezed,

Volume of juice collected = ......23... ml

1

1

2


10

QuestionSoalan


MarksMarkah

(d) Able to Predict the amount of the orange juice obtained if 5 oranges are squeezed.Answer:Any amount between 15ml to 23ml

1 1

(e) Able to state what happen if she squeeze an orange for 5 minutes

Answer:More

1 1

(f) Able to Write one inference for the situation

Sample Answers:

i. Container P has less amount of juice because it is squeezed by handii. Container Q has more amount of juice because it is squeezed by fruit blender

1 1

TOTAL 10

8 (a) (i) Able to compare the difference in amount of sweat

Sample Answers:

i. The amount of sweat in situation B is more than in situation Aii. The amount of sweat in situation A is lesser than in situation B

1 1

(ii) Able to write one inference about amount of sweat in situation A.

Answer:

The amount of sweat in situation A is lesser because the girl wear white dress

1 1

(b) (i) Able to record the reading of the stopwatch for the thumbtack to fallAnswer:

1

1

2


Type of surfaceJenis permukaan

Reading of stopwatch for the thumbtack to fall (s)

Bacaan jam randik untuk paku tekan jatuh (s)

Dark and dullGelap dan pudar

16

Bright and shinyCerah dan bersinar

26

11

QuestionSoalan


MarksMarkah

(ii) Able to draw a bar graph of type of surface against the reading of stopwatch for the thumbtacks to fall.

Answer:

Transfer points correct - 1mDraw bar graph correct - 1m

2


Reading of stopwatch (s)Bacaan jam randik (s)

0

5

10

15

20

25

30

35

Type of surfaceJenis permukaan

Dark and dullGelap dan pudar

Bright and shinyCerah dan bersinar

12

QuestionSoalan


MarksMarkah

(iii)

Able to state state one relationship between the type of surface and the reading of stopwatch for the thumbtack to fall.

Sample Answers:

i. White and shiny surface increase the reading of stopwatch for the thumbtack to fall

ii. Dark and dull surface decrease the reading of stopwatch for the thumbtack to fall

1 1

(iv) Able to state the variables

Answer:

1

1

2

(c) Able to state the operational definition of the absorption of heat.

Sample Answers:

i.Absorption of heat is the reading of stopwatch for the thumbtack to falliiAbsorption of heat is the time taken for the thumbtack to fall

11

TOTAL 10


Responding variablePembolehubah bergerak balas

The Reading of stopwatch for the thumbtack to fall/the time taken for the thumbtack to fall

Manipulated variablePembolehubah dimanipulasi

Type of surface

skema science k2 tov t2 2011

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