Skema Sc-n9

SULIT

JABATAN PELAJARAN NEGERI SEMBILAN DARUL KHUSUS

PENILAIAN TINGKATAN TIGA NEGERI SEMBILAN 2008 55/1 & 55/2 SCIENCE Paper 1 and 2

55© 2008 Hak Cipta Pejabat Pelajaran Daerah Tampin

1

SULIT

MARKING SCHEME PAPER 1 (SKIMA PEMARKAHAN) No. Answer

No. Answer

No. Answer

No. Answer

1.

D

11.

D

21.

A

31.

D

2.

A

12.

C

22.

C

32.

C

3.

C

13.

D

23.

C

33.

D

4.

D

14.

B

24.

A

34.

B

5.

B

15.

D

25.

D

35.

B

6.

C

16.

B

26.

A

36.

A

7.

A

17.

D

27.

D

37.

A

8.

C

18.

B

28.

C

38.

B

9.

D

19.

C

29.

C

39.

B

10.

A

20.

B

30.

B

40.

B

2

No 1

Description a. Student should be able to identify and label the part of human ear with the given words. P : Auditory canal Q : Cochlea R : Semicircular canal

3

b. Able to match the function and the parts of the human ear. Transmits sound waves to the eardrum P Detects and changes sound vibrations into impulses Q Collects and directs sound waves into auditory canal R Help to balance the body

2

a. i.

3

6

Able to state process X 1

Fertilisation ii. Able to state the product of fertilisation

1

Zygote b. Able to give one advantage of sexual reproduction

1

Produce a variety of offspring c. Able to give 2 types of vegetative reproduction and state their example Accept any 2 type of vegetative reproductions with relative example

2

d. Able to write a difference between asexual and sexual reproduction Asexual reproduction does not involve fertilisation but sexual reproduction involved fertilisation of gametes Accept any other differences

3

1

6

3

a. i.

Able to name the gas involved in the process 1

Oxygen ii. Able to identify the process involve in the activity.

1

Combustion

b. i.

Able to complete the equation of combustion.

Fuel Bahan api

+

oxygen

Carbon dioxide

Water

+

Air

2

c. Able to calculate the volume of oxygen used during combustion. 1

50 ml d. Able to identify which activity involve combustion

√

1

4

6

4

a. Able to state the gas collected at anode and cathode during electrolysis of water. 1 1

M : Oxygen N : Hydrogen b. i. Able to state substance X is an acid Sulphuric Acid Hydrochloric Acid Nitric Acid Any other acid

1 any one

ii. Able to state the function of substance X in the electrolysis of water. 1 To speed up the reaction / (electrolysis) process of water c. Able to write the equation for the electrolysis of water. 2

Water

+

Hydrogen

Air

Oxygen

d. Able to write the observation for the test of oxygen and hydrogen Gas

Test with

M

Glowing splinter

N

Lighted splinter

Observation

Lighted the glowing splinter

Produce a ‘pop’ sound

5

2

8

5

a. Able to state what happened to the rubber rod when it is rub with cotton cloth. 1 The rubber rod will be electro statically charged. ( accept any charge ) b. Able to identify and write the type of charge for the phenomena

2

+ + ++ + +

+ + + + +

+

+ + +

e. Able to write one function of fuse in the house circuit. 1

To break the circuit when there is - a short circuit - an increase of current in the circuit. Any other relevant answer. f. Able to calculate the current used by the refrigerator is marked 2800 W, 240V and make a decision on the type of fuse use. power Current I = voltage

1

2800 Current I =

240 1

=

5A

10A

11.67

13A

15A

6

7 1

6

a. i. Able to state one of the tropism shown by the plant in the figure. Phototropism Hydrotropism Geotropism

any one

1

ii. Able to write the important of the tropism mention in a.i. Phototropism :- to get sunlight for photosynthesis. Hydrotropism :- to get water from the ground. Geotropism :- enable the roots to grow deep into the ground. The important must follow the answer in a.i. b

1

Able to state the effect of the substance used in the experiment i. Anhydrous calcium chloride Absorb water from the atmosphere. ii. Water. To stimulate the roots towards water.

c i.

1 1

Able to state the other stimulus that stimulate the roots 1

Gravity ii. Able to name the tropism for the above stimulus

1

Geotropism d

Able to state the function of water to plant. To carry dissolved mineral salt into the plant

7

1

7

7

a.

Able to write the characteristic of the organism from the observation made in the figure i ii iii iv

Spirogyra: Made up of many cells / more than one cells Amoeba : Made up of a / single cell Hydra : Made up of many cells / more than one cells Euglena : Made up of a / single cell

4

b. Able to class the organism in a according to their common charateristic mention above Common characetistic Made up of many cells / more than one cells Spirogyra ; Hydra Made up of a / single cell Amoeba ; Euglena

4 Reject : Unicellular and multicellular for common characteristic.

8

8

8

i.

Able to state the difference by observing the figure. 1

The aluminium pot is hotter that glass pot (after 15 minute) ii. Able to make an inference from observing the situation in the figure. Aluminium pot gets heated faster than glass pot/ Type of pots influece the hotness of the pot

1

iii. Able to make a hypothesis from the observation above. 1 Aluminium conduct heat faster than glass // different material have different heat conductivity. iv. Able to read the reading of the stop watch and record the reading in the table provided Type of rod

Copper

Glass

Iron

Aluminium

Jenis rod

Kuprum

Kaca

Besi

Aluminium

Time / s Masa / s

3 15

60

45

35

v. Able to state the variable involved in the experiment.

(i) Manipulated variable Pembolehubah dimanipulasikan

1

Type of rod (ii) Responding variable Pembolehubah bergerak balas 1

Time for the thumbtack to drop (iii) Constant variable Pembolehubah dimalarkan Length of the rod. Initial temperature of water Distance of the thumbtack to the water tank

9

1

d. Able to plot the bar chart using the data in the table. Time/s Masa/s 70 60 50 40 30 20 10 0

Copper Kuprum

Glass Kaca

Iron Besi

Aluminium Aluminium

Type of rod Jenis rod

All point correct Graph correct

1 1

e. Able to define operationally the good conductor of heat. A good heat conductor is the material that conduct heat faster

10

1

12