Module 4 Pmr Science Worksheet- Soalan 8

7/27/2019 Module 4 Pmr Science Worksheet- Soalan 8

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SCIENCE PROCESS SKILLS

Tips :

Responding Variable (RV) = WTO (What To Observe)Pembolehubah bergerak balas

Manipulated Variable (MV) = WTC ( What To Change )Pembolehubah dimanipulasi

Constant Variable (CV) = KTS (Keep The Same )Pembolehubah dimalarkan

Term How to write

Inference 1. Observation because ofreason

2. RV /WTO increase / decrease because MV / WTCincrease/ decrease

Hypothesis

If (MV/WTC) .., then (RV / WTO) ..

Jika (MV/WTC)., maka (RV/WTO)

Aim

To investigate the effect of manipulated variable on respondingvariable

Untuk mengkaji kesan / hubungan antara MV /WTC denganRV/WTO

Relationship

When MV/ WTC, then RV/ WTO .

Apabila MV/WTC., maka RV/ WTO .

Operationaldefination

. is the RV/ WTO from the graph/ table.

..adalah RV/WTO.

_______________ is the reading of (measurement apparatus that isused in the exp)

adalah bacaan bagi ( alat pengukur yg digunakandalam eksp.)

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How To Identify Variables :

Manipulated variable Responding variable

Manipulated variable

Responding variable

Exercise

1. Answer the following questions based on the table given.

Time / s 0 30 60 90 120 150 180 210 240 270Temperature/ 0 C

25 40 50 60 70 80 80 80 80 80

Manipulated variable : ...................................................................................

Responding variable : ...................................................................................

Relationship : ...................................................................................

Inference :

Hypothesis :

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Type of Surface Reading of spring balance / N

P 8.5

Q 5.5

R 3.5

S 2.5

Manipulated variable : ....................................................................................

Responding variable : ....................................................................................


Mass of object / g 100 200 300 400 500

Reading of measuringcylinder / cm3

10 20 30 40 50



Relationship : ...................................................................................

Inference :

Hypothesis :


Time / s 0 30 60 90 120 150 180 210 240 270

Temperature/ 0 C

90 80 80 80 70 60 50 40 30 25



Relationship : ...................................................................................

Inference :

Hypothesis :

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Length of thread /cm

10 15 20 25 30

Time taken / s 15 25 35 45 55



Relationship : ...................................................................................

Inference :

Hypothesis :

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EXERCISES

1. A student found that sugar can dissolve faster in hot water.(Seorang pelajar mendapati gula lebih cepat larut dalam air panas)

Diagram 1 Diagram 2

a. Based on the observation in Diagrams 1 and 2, state the difference in thesolubility of sugar.(Berdasarkan pemerhatian anda dalam Rajah 1 dan 2, nyatakan perbezaandalam keterlarutan gula).

....

b. What inference can be made based on Diagrams 1 and 2 ?(Apakah inferens yang boleh dibuat berdasarkan Rajah 1 dan 2 ?)

...............

c. State your hypothesis based on your observation in Diagrams 1 and 2.(Nyatakan hipotesis anda berdasarkan pemerhatian anda dalam Rajah 1 dan2.)

...............

d. What is the aim of this experiment ?(Apakah tujuan eksperimen ini ?)

............

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Cold water Hot water

Sugar


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2. A student found that a wooden model with its legs open is more stable.(Seorang pelajar mendapati sebuah model kayu dengan kaki terbuka lebihstabil kedudukannya.)

DIAGRAM 1 DIAGRAM 2(legs closer) (legs open wide)

(kaki rapat) (kaki terbuka lebar)

a. Based on the observation in Diagrams 1 and 2, state the difference in thestability of the wooden model.(Berdasarkan pemerhatian anda dalam Rajah 1 dan 2, nyatakan perbezaandalam kestabilan model kayu tersebut.)

.........................................................................................................b. What inference can be made based on Diagrams 1 and 2 ?

(Apakah inferens yang boleh dibuat berdasarkan Rajah 1 dan 2 ?)

...............

c. State your hypothesis based on your observation in Diagrams 1 and 2.(Nyatakan hipotesis anda berdasarkan pemerhatian anda dalam Rajah 1 dan2.)

...............

d. What is the aim of this experiment ?(Apakah tujuan eksperimen ini ?)

............

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3. A student found that a black coloured towel can dry faster when dried underthe Sun.(Seorang pelajar mendapati tuala yang berwarna hitam lebih cepat kering biladijemur di bawah Matahari).

Diagram 1

a. Based on the observation in Diagram 1, state the difference in the rate ofdrying of the towels.(Berdasarkan pemerhatian anda dalam Rajah 1, nyatakan perbezaan dalamkadar pengeringan tuala.)

.

b. What inference can be made based on Diagrams 1 ?(Apakah inferens yang boleh dibuat berdasarkan Rajah 1?)

..............

c. State your hypothesis based on your observation in Diagrams 1.(Nyatakan hipotesis anda berdasarkan pemerhatian anda dalam Rajah 1.)

...............

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black towel white towel


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3. An electrician found that a bulb is brighter when using a thick wire.( seorang juru elektrik mendapati mentol menyala dengan terang apabilamenggunakan wayar yang tebal)

thick wire thin wire(tebal) (nipis)

Diagram 1 Diagram 2

a. Based on the observation in Diagram 1 and 2, state the difference in thebrightness of the bulb.(Berdasarkan pemerhatian dr diagram 1 and 2,Nyatakan perbezaan dari segi kecerahan mentol )

..........................................................................................................

b. What inference can be made based on Diagrams 1 and 2 ?Apakah inferens yang boleh dibuat berdasarkan rajah 1 dan 2?

...........................................................................................................................

c. State your hypothesis based on your observation in Diagrams 1 and 2.( Nyatakan hipotesis)

...........................................................................................................................

d. What is the aim of this experiment ? (tujuan)

.

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5.A night market fruit seller found that a bulb at his stall is brighter when using ashorter wire.

a. Based on the observation in the diagrams, state the difference in thebrightness of the bulb.

..........................................................................................................

b. What inference can be made based on the diagrams ?

...........................................................................................................................

c. State your hypothesis based on your observation in the diagrams.

...........................................................................................................................

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6. The diagram shows two different containers, J and K. The grasshopper in bothcontainers are similar.

a. State one difference between the grasshoppers in containers J and K aftertwo days.

..........................................................................................................

b. What inference can be made based on the situations in containers J and K ?

...........................................................................................................................

c. State your hypothesis based on the situations in containers J and K..

...........................................................................................................................

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7.Answer the questions based on the diagrams.

A.

solution A, 400C solution B, 600C solution C, 800C


Responding variable

Operational definition

fortemperature

B.

substance D, 50 g substance E, 40 g substance F, 65 g


Responding variable


formass

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weighing scale weighing scale weighing scale


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C.

spring balance spring balance

object X, 5N object Y, 4N object Z, 6N


Responding variable


forweight

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8.An experiment was conducted to study the length of a pendulum and how itaffects the number of swings in a given time.

a. Record the stop watch reading in the space provided.

Time _____ when length is 20 cm Time _____ when length is 30 cm

Time _____ when length is 40 cm Time _____ when length is 50 cm

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b. Complete the table below by recording the stop watch reading on therespective length of the thread.

Length of the thread ( cm ) 20 30 40 50

Time taken to make 10swings ( s)

.. .. .. ..

c. Based on table 1.2, draw a graph of the time taken for 10 swings againstthe length of the thread.

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Length of thread /cm

4

8

12

16

20

36

24

28

32

40

Time taken for 10 swings / s


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d. State the variables in the experiment.


Responding variable

Constant variable

e. State the relationship between the time taken for ten swings and the lengthof the thread.

____________________________________________________________

7.A students carried out an experiment to study the effect of type ofsubstance and the volume of the water.

a. The reading of the measuring cylinder after all the substances wasplaced in the water are shown below.

Substance: cork Substance: coin Substance: woodMeasuring cylinder Measuring cylinder Measuring cylinderreading : 12 ml reading : _____ ml reading : ______ ml

Substance: stone Substance: ironMeasuring cylinder reading: _____ ml Measuring cylinder reading : ____ml

15

20

1030

40

50

60

50


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b. Complete the table

c. State the variables involved in this experiment.


Responding variable

Constant variable

d. State the relationship between the mass of substances and the measuringcylinders reading.

.

e. Plot a bar chart on the measuring cylinders reading against the mass ofsubstance.

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Substance cork coin wood stone iron

Measuringcylinders reading

/ ml

12. . . .


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17

Substance

10.0

20.0

30.0

40.0

50.0

Measuring cylinders reading / ml

Module 4 Pmr Science Worksheet- Soalan 8

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Transcript of Module 4 Pmr Science Worksheet- Soalan 8