PP Paper 3 midyear F5 SBP 2011 - banksoalanspm.com€¦1 4551/3 © 2011 Hak Cipta Sekolah Berasrama Penuh SULIT QUESTION 1 1 (a) [KB0603 - Measuring Using Number] Score Criteria 3

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4551/3 © 2011 Hak Cipta Sekolah Berasrama Penuh SULIT

QUESTION 1

1 (a) [KB0603 - Measuring Using Number]

Score Criteria 3

Able to record all the time taken for methylene blue to decolourise in the boxes provided accurately. Sample answers:

Source of water sample P Q R Time taken for methylene blue to decolourise, minute

53 10 23

2

Able to record any 2 readings accurately.

1 Able to record any 1 readings accurately.

0 No response Or Wrong response

1 (b) (i) [KB0601 - Observation]

Score Criteria

3

Able to state any two observations correctly according to the criteria: Water sample / Station Time taken for the methylene blue solution turns colourless Sample answers: ( Horizontal observations ) 1. Time taken for the methylene blue solution to decolourise / turn colourless for water sample from station P/Q/R is 53 / 10 / 23 / minutes. ( Vertical observations ) 2. Time taken for the methylene blue solution to decolourise / turn colourless for water sample from station P is longer than in station Q/R.

2

Able to state one correct observation and one inaccurate observation. or Able to state any two inaccurate observations. Sample answers: (Inaccurate observations – horizontal ) 1. Time taken for the methylene blue solution to decolourise /turns colourless for water

sample from station P/Q/R is long/ the shortest / the longest / short. (Inaccurate vertical observations ) 2. Time taken for the methylene blue solution to decolourise / turns colourless for water

sample from station P/Q/R is longer / shorter .

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2


1

Able to state two observations at idea level ( based on any 1 criterion.) Or One correct observation and one observation at idea level Or One correct observation and one wrong observation Or One inaccurate observation and one observation at idea level Sample answers: ( Idea level ) 1. Time taken for the methylene blue solution to decolourise / turns colourless changes / is

different. 2. Water samples are from different station / sources. 3. Methylene blue solution decolourises / turns colourless.

0

No response or wrong response

Summary of scoring for observation:

Score Correct Inaccurate Idea Wrong 3 2 - - - 2

1 1 - - - 2 - -

1

1 - 1 - - 2 - 1 - - 1 - 1 1 -

0 - 1 - 1 0 - - 1 1

1 (b) (ii) [KB0604 - Making inferences]

Score Criteria

3

Able to make one accurate inference for each observation based on two criteria: Level of pollution // BOD value Amount of dissolved oxygen // ( activity ) of microorganisms // distance from the

chemical factory Sample answers: ( For horizontal observations )

1. Level of pollution ( in water samples from station Q / R ) is high / highest because of less / least amount of oxygen dissolved // distance from the chemical factory is near

2. Level of pollution ( in water samples from station P) is lowest / low because of

high / highest amount of oxygen dissolved // distance from the chemical factory is far


3


( For vertical observations )

3. Level of pollution in water sample P is lower than in water sample Q/R or inversely because amount of oxygen dissolved in water sample P is higher than in water sample Q/R or inversely.

2

Able to make one accurate inference and one inaccurate inference corresponds to the observation. or Able to make two inaccurate inferences corresponds to the observation Sample answers: ( Inaccurate inference for horizontal observation )

1. Level of pollution / BOD value ( in water samples from station Q / R ) is high / Amount of oxygen dissolved is less / the least // distance from the chemical factory is near

( Inaccurate inference for vertical observation )

2. Level of pollution / BOD value ( in water samples from station P/Q/R ) is higher / lower // Amount of oxygen dissolved ( in water samples from station P/Q/R ) is higher / lower // distance from the chemical factory is farther

1

Able to make an idea of inference based on one criterion. Sample answers:

1. Level of pollution / BOD value / amount of dissolved oxygen changes / is different

0 No response or wrong response

Summary of scoring for inference:

Score Correct Inaccurate Idea Wrong 3 2 - - - 2

1 1 - - - 2 - -

1

1 - 1 - - 2 - 1 - - 1 - 1 1 -

0 - 1 - 1 0 - - 1 1


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1 (c) [KB061001 - Controling Variables]

Score Criteria 3

Able to state all the variables and the method to handle the variables correctly. Sample answers:

Variables Method to handle the variables Manipulated variable: Station / water sample

Prepare / Use three different sample of water // Change the sample of water from P,Q and R

Responding variable: Time taken for methylene blue (solution) to decolourise / turns colourless // Level of pollution // BOD value

Record the time taken for methylene blue (solution) to decolourise / turns colourless by using stopwatch.

Controlled variable: Volume of water samples / methylene blue solution // concentration / percentage of methylene blue solution

Use the same volume of water sample / methylene blue solution // Fix the concentration / percentage ( of methylene blue solution ) at 0.1%

6 ticks

2 Able to state 4 - 5 of the variables and the method to handle the variables correctly. 4-5 ticks

1 Able to state 1 - 3 of the variables and the method to handle the variables correctly. 2-3 ticks

0 No response or wrong response 0 tick

1 (d) [KB0611 - Making Hypothesis]

Score Criteria 3 Able to state a hypothesis based on 3 criteria:

P1: Manipulated variable ( Water sample ) / distance from the chemical factory P2: Responding variable (Time taken for methylene blue (solution) to decolourise // Level of pollution // BOD value ) P3: Relationship between Manipulated variable and Responding variable

Sample answers:

1. Water sample from Station Q has the shortest time taken for methylene blue (solution) to decolourise / highest level of pollution / BOD value

2. Water sample from Station C has the longest time taken for methylene blue (solution) turns colourless // lowest level of pollution / BOD value )

3. The nearer the distance of water sample to the chemical factory, the higher the level

of pollution / the shorter the time taken for methylene blue (solution) to decolourise / the higher the BOD value / amount of oxygen dissolved


5


2

Able to state less accurate hypothesis to show a relationship between manipulated variable and responding variable based on any two criteria. Sample answers: 1. Different water samples has different level of pollution / time taken for methylene blue

solution to decolourise / BOD value

1 Able to state hypothesis at idea level to show a relationship between manipulated variable and responding variable based on one criterion. Sample answers:

1. Level of pollution / BOD value / amount of oxygen dissolved is different

1 (e)(i) [KB0606 - Communicating]

Score Criteria 3

(e) (i) Construct a table and record the results of the experiment. Your table should contain the following title.

Source of water sample Sumber sampel air Time taken for methylene blue solution to decolourise Masa diambil oleh larutan metilena biru meluntur

Able to construct a table and fill in the data accurately based on two Criteria: Title, T Correct title with correct unit Data, D All correct stations with correct time taken for methylene blue solution to decolourise Sample answers:

Title, T

Source of water sample

Time taken for methylene blue solution to decolourise, minute

Station P 53 Station Q 10 Station R 23

Data, D

2 Able to tabulate a table based on any one criteria.



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1 (e)(ii) [KB0608 - Space and Time Relationship]

Score Criteria 3 Able to plot a bar chart of the time taken for the methylene blue solution to decolourise and

water samples based on three criteria: Both axes with correct units, P

Y axis – time taken for the methylene blue solution to decolourise, minutes X axis – source of water sample

All points plotted correctly,T 3 separate bars, B Sample answer: Time taken for methylene blue solution to decolourise, minute

P Q R Source of water sample

2 Able to plot a bar chart based on any two criteria.

1 Able to plot a bar chart based on any one criterion.


1 (f) [KB0607 - Interpreting Data]

Score Criteria

3 Able to interpret data correctly and explain the relationship based on the following aspects: P1 : water samples and the level of pollution P2 : amount of waste / pollutants from the chemical factory P3 : amount of dissolved oxygen // activity of microorganisms Note : P1 - Compare at least two water samples

60 50 40 30 20 10 0


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Sample answer: 1. Water sample from Station Q has the highest level of pollution compare to water

sample from the Station P/R because of high amount of waste / pollutant from chemical factory that leads to high activity of microorganisms / less amount of dissolved oxygen or inversely

2 Able to interpret data correctly and explain the relationship based on any two criteria:

1 Able to interpret data correctly and explain of the relationship based on any one criterion at idea level.

0


1 (g) [KB0605 - Predicting]

Score Criteria

3 Able to predict the result accurately based on the criteria: P1: Prediction of time taken to decolourise methylene blue solution P2: Presence of (untreated) sewage/ cow faeces / microorganisms P3: High activity of microorganisms // less dissolved oxygen Sample answers: (Time taken) is shorter than 53 minutes / ( any value less than 53 minutes ) due to the presence of (untreated) sewage / cow faeces that will increase the activity of microorganisms // decrease the dissolved oxygen.

2 Able to predict the result less accurately based on any 2 criteria.

1 Able to predict the result based on any one criterion.

0


1 (h) [KB0609 - Define Operationally]

Score Criteria 3 Able to define what BOD is based on the experiment correctly based on 4 criteria:

D1 - Level of water pollution D2 - Time taken to decolourise methylene blue (solution) D3 - By water samples from station P/Q/R. D4 - Affected by human activity / distance from the chemical factory

Sample answer: 1. Level of water pollution determined by the time taken to decolourise the methylene

blue (solution) by the water samples from station P/Q/R which is affected by human activity/ distance from the chemical factory.


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2 Able to state what BOD based on any 2 to 3 criteria.

1 Able to state what BOD based on any 1 criterion // Theoritical definition of BOD. Theoritical definition : Amount of oxygen utilized by microorganisms to oxidize organic matter in water.

1 (i) [KB0602 - Classifying]

Score Criteria 3

Able to classify the water pollutants and their respective source accurately. Sample answer:

Source Punca

Water pollutant Bahan pencemar air

Housing area

Kawasan perumahan

Detergent Detergen

Rubbish Sampah

Agricultural area

Kawasan pertanian

Nitrates Nitrate Phosphates Fosfat

Pesticides Racun serangga

Industrial area

Kawasan perindustrian

Heavy metals Logam berat

5 ticks

2 3-4 ticks

1 2 ticks

0

0 – 1 tick Or Wrong response // No response


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QUESTION 2

2(i) Problem statement

Score Criteria 3

Able to state a problem statement relating the manipulated variable with the responding variable correctly based on the criteria:

C 1: Manipulated variable ( Light intensity ) C 2: Responding variable – ( Growth rate // Number (of lemna minor) ) C 3: Relationship in question form

(C1+C2+C3) Sample answers : 1. What is the effect of light intensity on the growth rate / the number of Lemna

minor? 2 Does the light intensity affects the growth rate / the number of Lemna minor?

2 Able to state the problem based on two criteria; ( C1 + C2 ) // C1 /C2 + C3 ) Sample answers : 1. What is the effect of light intensity on plants? (C1+C3) 2. The number / growth rate of plant is affected by the light intensity(C1 + C2)

1

Able to state the of problem statement at idea level based on one criterion. Sample answer : 1. Light intensity affects the growth of plants ( C1 only )

0 No response or wrong response.

2(ii) Hypothesis

Score Criteria 3

Able to state hypothesis correctly based on the criteria: C 1: Manipulated variable - Light intensity C 2: Responding variable - The growth rate / the number (of Lemna Minor) at the end of experiment ) C 3: Relationship of the variables

Sample answer :

1. The higher the light intensity the higher / faster the growth rate / the number of Lemna minor at the end of experiment.

2. The growth rate / the number of Lemna minor is high / fast when light intensity is high.


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2 Able to state the hypothesis inaccurately based on any two criteria . Sample answer :

1. Light intensity affect the growth rate of plants / Lemna minor. (no C3) 2. The growth rate of plants / Lemna minor is higher. ( no C1) 3. Lemna minor grow best at suitable light intensity. ( C1 only )

1 Able to state the idea of hypothesis. Sample answer :

1. Light intensity affect the plants / Lemna minor. ( no. C2 + C3)

0 No response or wrong response.

2(iii) Variables

Score Criteria

3

(1 mark

for each

correct

variable)

Able to state all the three variables correctly.

Sample answer : Manipulated variable: Light intensity // distance from the light source

Responding variable: The growth rate / the number of Lemna minor at the end of

experiment

Controlled variable : Time to grow the lemna // Initial number of Lemna minor /

Volume of pond water

// distance of Lemna minor from the light bulb ( with different

watts ) // temperature

2 Able to state two variables correctly

1 Able to state one variable correctly

0 Wrong response or no response

2(iv) Materials and apparatus

Score Criteria 3

Able to state all the functional materials and apparatus accurately based on the criteria: 2 Materials and 4 Apparatus Materials : *Lemna minor, *(pond) water // water and nutrients // Knop

solution Apparatus : *Light bulb (5 watts, 40 watts, 80 watts) , beaker/ basin/ container,

ruler, measuring cylinder, Waterproof paint/ marker pen. *Compulsory


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2 Able to state 2 material and 2 apparatus for the experiment including * 1 Able to state 1 material and 1 apparatus for the experiment. 0 No response or wrong response

2(v) Procedure (Refer to procedure in example)

Score Criteria

3

Able to describe the steps of the experiment procedure or method correctly based on five criteria:

P1 : How to set up the apparatus ( at least 3 steps) P2 : How to operate the the control variable ( Any one) P3 : How to operate the responding variable ( Any one ) P4: How to operate the manipulated variable ( Any one ) P5 : Precaution // steps to increase accuracy ( Any one )

All 5P

2 Any 3 – 4 P

1 Any 2 P


Sample answer: 1. Three beakers / containers are prepared and filled with 500ml of ( pond ) water in

each beaker. (P1), (P2)

2. The beakers are labeled as A, B and C with waterproof pain / marker pen. (P1)

3. 5 Lemna minor are put into each beaker. (P1) (P2)

4. Each beaker is placed at 30cm from the lamps with different light intensities, that is, 5 watts, 40 watts and 80 watts respectively.

(P1) (P2) (P4)

5. All the beakers are placed in an area of the same temperature. (P5) (P2)

6. Change the water in each beaker every 3 days. (P5)

7. After 7 days, the number of Lemna minor in each beaker is counted and recorded.

Note: Correct technique is accepted as P3

(P2)

(P3)

8. The growth rate of Lemna minor is calculated by using formula : (P3)


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Growth rate of lemna minor = the number of Lemna minor

Time taken / day

9. The result are recorded in a table. (P1)

2(vi) Data

Score Criteria

2

Able to construct a table to record data with based on the following aspects : Titles of manipulated variable and responding variable with correct units- (1m) Data for manipulated variable ( at least three different light intensity ) – (1m) Sample answer:

(RV)

(MV) Light

intensity (watts)

Number of Lemna minor The growth rate of Lemna minor

( Number of lemna minor / day )

Beginning of experiment

End of experiment

5 40 80

Ringkasan pemarkahan :

No Criteria Score

2 (i) Problem statement 3 2 (ii) Hypothesis 3 2 (iii) Variables 3 2 (iv) Materials and apparatus 3 2 (v) Procedure 3 2 (vi) Presentation of data 2

Total

17 marks

PERATURAN PERMARKAHAN TAMAT

(Data)


Documents

PP Paper 3 midyear F5 SBP 2011 - banksoalanspm.com€¦1 4551/3 © 2011 Hak Cipta Sekolah Berasrama Penuh SULIT QUESTION 1 1 (a) [KB0603 - Measuring Using Number] Score Criteria 3