SKEMA JAWAPAN MODUL 3 KERTAS 2 2013 (55/2)

QUESTIONS MARK SCHEME SUB

MARK TOTAL MARK

1 a Able to name the structures in human urinary system. Answer P = Ureter Q = Urinary bladder R = Urethra

1 1 1

3

b Able to match the structures with its function correctly Answer P = remove waste product from blood Q = Store urine before removal R = remove urine out of the body

1 1 1

3

TOTAL 6

2 a Able to classify the sources of energy Answer

Renewable Non-renewable

Wind Biomass

Petroleum Natural gas

* Renewable - 2 correct award 1 mark * Non-renewable - 2 correct award 1 mark

1 1

2

b Able to state two advantages of using renewable energy. Answer

1. Save cost 2. Unlimited supply 3. Does not pollute the environment 4. Always available 5. Clean

* Choose any two advantages

1 1

2

c Able to suggest two ways to save energy at home correctly. Answer 1. Turn off gas stoves/ lights/ fans/ electrical appliances

when not in used/ 2. Develops more efficient engines/machines/motor/ 3. Choose energy efficient appliances/ green technology

products/ 4. Use washing machine full load/ iron lots of cloths at one

time/ avoid opening refrigerators door regularly

* Choose any two answers

1 1

2

TOTAL 6

3 a

Able to name the type of current. Answer Alternating current

1

1

b Able to state the value of voltage. Answer 240 V

1

1

c Able to state the function of main fuse. Answer Break the circuit if the current exceed safe value

1

1

d Able to name cable K correctly. Answer Neutral wire

1

1

e i ii

Able to name the type of electric circuit at home. Answer Parallel circuit Able to give one advantage. Answer 1. each appliance has its own switch 2. if one appliance is break down the others are not involved * accept any relevent answers

1 1

2

TOTAL 6

4

a Able to state the observation based on Diagram 4 after the beaker is filled with water. Answer The aquatic plant stay upright by the presence of water

1

1

b Able to state how aquatic plant being supported in water. Answer By water buoyancy

1

1

c Able to draw and label the cross section of the stem of an aquatic plant. Answer

1 1

2

d Able to give two examples of plant that has supported by water buoyancy. Answer

Lotus / Water lily / Duckweed / Water hyacinth / Hydrilla / Water lectuce / Water spinach (kangkung air)

* accept any suitable answer

1 1

2

TOTAL 6

* correct drawing award 1 mark * correct labeling award 1 mark

5 a Able to name the parts in diagram 5 correctly Answer N : pancreas

1

1

b i ii

Able to name the substance stored in organ K. Answer Bile Able to describe the effect if bile is absence. Answer Fats can not be digested// jaundice

1 1

2

c i ii

iii

Able to match the parts correctly Answer

Visking tube Small intestine

Water blood

Able to describe the food test correctly Answer

Starch Add a few drops of iodine solution

Glucose add a few cm of Benedict solution and heat it

Able to explain what happen to glucose in visking tube Q. Answer Glucose molecule diffuse through small pores of Visking tube into the water

1 1

1 1 1

5

TOTAL 8

6

a

Able to name one element found in limestone. Answer Calcium // Carbon // Oxygen

1

1

b

i.

ii.

Able to state the observation in Situation U. Answer Sizzling sound is heard // Heat energy is released Able to name the product formed in U. Answer Calcium hydroxide // Slaked lime

1 1

2

c

Able to state the changes of lime water. Answer Lime water turns cloudy // milky // chalky

1

1

d

Able to write word equation for the reaction in T. Answer

* 3 correct - award 2 marks * 2 correct - award 1 marks * 1 correct - no mark 2

e Able to state one natural form of calcium carbonate Answer Eggshell // Marble // Bones // Teeth // Shells // Coral

* accept any suitable answer

1

1

f Able to explain how that action can helps the farmer to treat the soil. Answer Reduce the acidity of the soil

1

1

TOTAL 8

7 a Able to record the volume of mercury in the measuring cylinder. Answer 50 ml / 50 cm3

1 1

b i ii

Able to calculate the density of mercury and turpentine. Answer

Type of Liquids

Volume (cm3)

Mass (g)

Density (g/cm3)

Mercury 50 680 13.6

Turpentine 760 680 0.9

Glycerine 520 680 1.3

Able to state the variables involved in the experiment. Answer

Manipulated variable

Volume of substances// Types of liquid

Responding variable

Density of substances

Constant variable

Mass of substances

1 1

1

1

1

5

c Able to state the hypothesis correctly. Answer The bigger the volume the lower the density if the mass is constant [Vise versa]

1

1

Limestone // Calcium carbonate

Quicklime // Calcium oxide

Carbon dioxide Heat

+

d Able to predict the density of mercury if the volume is doubled. Answer Remain the same// 13.6g/cm3

1

1

e Able to classify mercury, turpentine and glycerine into two groups based on their position when put into container containing water Answer

Float in water Turpentine

Sink in water Mercury, glycerine

1 1

2

TOTAL 10

8 a i Able to state one different based on the observation Answer Sugar in Cup A dissolves faster than sugar in Cup B (vice-versa)// Sugar in Cup A dissolved completely in 6 second while sugar in Cup B dissolved completely in 12 second (vice-versa)

1

1

ii Able to write one inference about sugar in Cup A Answer Sugar in Cup A takes shorter time to dissolve because the size of sugar is small /has a larger surface area// Sugar in Cup A dissolves faster because the size of sugar is small / has a larger surface area

1

1

b i Able to record the time taken for sugar to dissolve completely in Beaker R Answer 20 s

1

1

ii Able to predict the time taken for sugar to dissolve completely in Beaker S Answer Less than 20 s ( reject 0 s)

1

1

iii Able to draw a line graph to show relationship between temperature and time taken for sugar to dissolved completely in all beakers Answer Note 1. Able to plot at least 2 point, award 1 mark 2. Able to joint all the points smoothly, award 1 mark

1 1

2

c Able to state a relationship between the temperature and time taken for sugar to dissolve completely Answer The higher the temperature, the shorter the time taken for sugar to dissolve completely// As the temperature increases, the time taken for sugar to dissolve completely decreases// The temperature is indirectly proportional to the time taken

1

1

d Able to state the responding variable involved in this experiment Answer Time taken (for sugar to dissolve completely )

1

1

e Able to predict time taken for sugar to dissolved completely in beaker P if cold water is used. Answer More than 32 sec // longer time taken // > 32 sec

1

1

Time taken (s)

Temp (oC)

70

60

0 10 20 30 40 50 60

50

40

30

10

20

f Able to state the operational definition of the rate of dissolving Answer The rate of dissolving is the time taken for the sugar to dissolve completely// The rate of dissolving is the reading of a stopwatch

1

1

TOTAL 10