skema sains pmr 2012 paper 2 selangor

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55/2 JABATAN PELAJARAN NEGERI SELANGOR MAJLIS PENGETUA SEKOLAH MENENGAH PROGRAM PENINGKATAN PRESTASI AKADEMIK PERCUBAAN PENILAIAN MENENGAH RENDAH 2012 PERATURAN PEMARKAHAN SCIENCE PMR 55/2 PPPA JPS 2012 : PERCUBAAN PMR 2012 55/2 ©2011 Hak Cipta Jabatan Pelajaran Negeri Selangor MPSM

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SKEMA TRIAL PMR 2012 SAINSNEGERI SELANGOR

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Page 1: Skema Sains Pmr 2012 Paper 2 SELANGOR

55/2

JABATAN PELAJARAN NEGERI SELANGORMAJLIS PENGETUA SEKOLAH MENENGAH

PROGRAM PENINGKATAN PRESTASI AKADEMIKPERCUBAAN PENILAIAN MENENGAH RENDAH 2012

PERATURAN PEMARKAHAN

SCIENCE PMR55/2

PPPA JPS 2012 : PERCUBAAN PMR 2012

55/2 ©2011 Hak Cipta Jabatan Pelajaran Negeri Selangor

MPSM

Page 2: Skema Sains Pmr 2012 Paper 2 SELANGOR

2

No. Mark scheme Mark Total1 (a)

(b)

Able to label the three types of cells.Answer :P : nerve cellsQ : white blood cellR : sperm cell

Able to match the organ with its function.Answer :

111

1

1

1

3

3

Total 6 marks2(a)

(b) (i)

Able to label P and Q correctly.Answer :P : acid Q : alkali

Able to state the products of neutralization process correctly.

11

2

55/2 ©2011 Hak Cipta Jabatan Pelajaran Negeri Selangor

PERATURAN PEMARKAHAN SCIENCE PMR 55/2 PPPA JPS 2012 – PERCUBAAN PMR 2011

To pump bloodUntuk mengepam

darah

To digest foodUntuk menghadam

makanan

To excrete waste products

Untuk membuang bahan terbuang

Page 3: Skema Sains Pmr 2012 Paper 2 SELANGOR

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(ii)

(iii)

Answer :a) Waterb) Salt

Able to state the method of neutralisation process.Answer : titration

Able to predict the pH value of the neutralisation product correctlyAnswer : 7

11

1

1

2

1

1

Total 6marks3(a)

(b)(i)

(ii)

(iii)

(c)(i)

(ii)

Able to name condition P correctlyAnswer:Fuel

Able to answer what happen to anhydrous cobalt chloride paper correctly.Answer:Turns to pink

Able to give one reason correctly.Answer :The presence of water.

Able to state another product of the combustion correctly.Answer :Carbon dioxide / energy

Able to predict what will happen to the combustion of the candle.Answer:The candle will extinguish faster / burn out faster / time taken for the candle to extinguish will be shorter.

Able to state one reason correctly.Answer :Exhaled air contain less oxygen.

1

1

1

1

1

1

1

1

1

1

1

1

Total 6marks4(a)

Able to name the machine.Answer:Dialysis machine.

1 1

55/2 ©2011 Hak Cipta Jabatan Pelajaran Negeri Selangor

Page 4: Skema Sains Pmr 2012 Paper 2 SELANGOR

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(b) (i)

(ii)

(c)

(d)

(e)

Able to state what is present in the urine correctly.Answer :GlucoseAble to state the reason correctly.Sample Answer:Kidney failed to filter the blood.

Able to state one disease that may lead to kidney failure correctlyAnswer: diabetes // high blood pressure

Able to mark in the box correctly.Answer:

Able to mark the food that should be avoided by a kidney failure in the box correctly.Answer :

Salted fish Orange Rice√

1

1

1

1

1

1

1

1

1

1

Total 6marks5(a)(i)

(b)

Able to label N correctly.Answer:Fuse

Able to compare the 3-pin plug and 2-pin plug.Answer:

3-pin plug 2-pin plugHas an earth wire Has no earth wire

1

11

55/2 ©2011 Hak Cipta Jabatan Pelajaran Negeri Selangor

Page 5: Skema Sains Pmr 2012 Paper 2 SELANGOR

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(c)

(d)(i)

(ii)

(iii)

Able to answer what will happen if the excessive current flows through an electrical in a 3-pin plug correctly.Sample Answer :The fuse will melt // break the circuit

Able to calculate the current flowing through the electric current correctlyAnswer:

Current = 1000 240 = 8.33 A

Able to circle the suitable rating of a fuse.

3A 5A 10A

Able to state what will happen when a higher value of fuse if used.Answer : The fuse will not function/electrical appliance will breakdown.

1

1

1

1

1

4

2

1

Total 8marks6(a)(i)

(b) (i)

(ii)

© (i)

Able to state the method of heat transferred.Answer:conduction

Able to write R, S and T in Table 6.2 correctly.Answer :

Iron Copper AluminiumT S R

Able to choose the most suitable material for the base P of the cooking utensil.Answer:Copper because it is a very good conductor of heat

Able to explain the method of heat transferred applied in

1

1

1 1

1

1

1

2

1

55/2 ©2011 Hak Cipta Jabatan Pelajaran Negeri Selangor

Page 6: Skema Sains Pmr 2012 Paper 2 SELANGOR

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(ii)

kettle.Answer :Convection.Heat energy is transferred through the water by the movement of water particles.

Able to give one example that apply the same method of heat transfer.Answer :household ventilation system / refrigerator

1

1

2

1

Total 8marks7(a)(i)

(ii)

(iii)

(iv)

(b)

Able to state one difference between the rats in ecosystem J and K after one month correctly.Answer :The number of rats in ecosyetem J increases while the number of rats in ecosyatem K decreases.

Able to state one inference of ecosystem J or KSample answer :

1. The number of rats in ecosystem J increases because there are plants/food.

2. The number of rats in ecosystem K decreases because there is not enough food//they have to compete for food.

Able to predict what happen to the rats if all the paddy plants died.Answer :The number of rats decreases.

Able to state the relationship between the number of paddy plant and the number of rats.Answer :The more the number of paddy plant, the number of rats.

Able to classify all the animals into two groups

1

1

1

1

4

1

1

1

1

4

55/2 ©2011 Hak Cipta Jabatan Pelajaran Negeri Selangor

Page 7: Skema Sains Pmr 2012 Paper 2 SELANGOR

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Answer :Secondary consumer Tertiaryconsumer

MonkeyMouse deer

LeopardSnake

Total 8marks8(a)(i) Able to state the difference in brightness of the bulb in set P

and Q.Answer:Bulb in set Q is brighter than P(vice versa)

1 1

(ii)

Able to write one inference about the brightness of the bulb in set PSample answers:Bulb P is dimmer than Q because has one dry cells/less dry

cell

1

1

(iii) Able to state the relationship between the number of dry cell and the brightness of the bulb. Answer:The more the number of dry cell the more brightness of the bulb (vice versa)

1 1

8(b)(i)

(ii)

Able to record the reading of the ammeterAnswer :0.22A

Able to draw graph

1 1

2

55/2 ©2011 Hak Cipta Jabatan Pelajaran Negeri Selangor

Page 8: Skema Sains Pmr 2012 Paper 2 SELANGOR

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(ii)

(iv)

(v)

(vi)

Transfer all points = 1 markJoin all points correctly = 1 mark

Able to state the relationship between the number of dry cells and the reading of ammeter.Answer :The higher the number of dry cell the higher the reading of ammeter.

Able to predict the reading of ammeter when five dry cells is used.Answer :Higher/more than 0.4A

Able to state the variables:Answer :

Able to write one hypothesis :Answer :The higher the number of dry cell the higher the reading of ammeter/value of current

11

1

1

1

1

1

2

1

1

2

1

8(c) Able to define operationally for current.Answer :Current is the ammeter reading.

1 1

Total 12marks

55/2 ©2011 Hak Cipta Jabatan Pelajaran Negeri Selangor

Manipulated variable Number of dry cell

Responding variable Ammeter reading/value of current