latihtubi variablesmix

8/3/2019 Latihtubi VariablesMix

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VARIABLES(K10): Able to state what is changed (manipulated)(K11): Able to state what is measured(responding)(K12): Able to state what is kept the same(constant)

1. Diagram 1 shows a study carried out by a pupil to investigate the abbilities of three objects, X, Y and Zto allow light to pass through.

Diagram 1a) State

(i) What is changed (manipulated variable) in this investigation.

.

(ii) what is measured (responding variable) in this investigation.

2. Diagram 2 shows an investigation. The apparatus is left aside for one week.

Diagram 2a) State

(i) What is changed (manipulated variable) in this investigation.

.


(iii) what is kept the same.

..

Material X Material ZMaterial Y

oil

boiledwater

nail

thread

nail

dry air

dried calcium

chloride

pipewater

nail

thread

nail

oil


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3. Two ice cubes of different sizes are put into two beakers Pand Q as shown inDiagram 3

Diagram 3

The temperature of water in beakerPand Q is recorded in Table 1 below.

Beaker Initial Temperature (C) Temperature after the

melting of ice (C)

P 30 15

Q 30 25

a) State

(i) what is changed (manipulated variable) in this investigation.

.


(iii) what is kept the same (constant variable) in this investigation.

.

4. A Year 5 students study the properties of substances P, Q, and Rby using litmuspaper. The results are as shown in Table 2 above.

Material Change in the colour ofred litmus paper

Change in the colour ofblue litmus paper

PNo change No change

QTurns blue No change

RNo change Turns red

Table 2a) State


.



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5. Diagram 4 shows the shadows of a vertical pole in the middle of a field from8.00am to 6.00pm.

Diagram 4

a) State


.



.

6. The table below shows a result of Kamals observation on two types of spoon, plasticspoon and steelspoon.

a) State


.



.

Type ofspoon

Ability of spoon to bebreak

Plastic spoon Easy

Steel spoon Hard

Table 1

9.00 am

10.00am11.00am

12.00pm1.00pm

2.00pm

3.00 pm


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7. An investigation to study the shape of the sun at certain time during the eclipse of theSun is carried out and recorded in the table below.

Time 11.00 a.m 11.05 a.m 11.10 a.m 11.15 a.m 11.30 a.m

Shapeof theSuncan beseen

a) State


.


8 Two methods of havesting are used to in two paddy fields of the same size. The timetaken to harvest each paddy field is recorded

Paddy field Q Paddy field R

Period of harvesting: 3 weeks Period of harvesting 3 days

a) State two information gathered in this investigation

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

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


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9. The table below shows the distance of the planet from the sun and the time taken tomove around the Sun

Planet Distance of theplanet from the

Sun (km)

Time taken tomove around the

Sun (years)

P 2870 84 tahun

Q 4500 165 tahun

R 58 3 bulan

S 780 12 tahun

T 108 7 bulan

a) State two information gathered in this investigation

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

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

Diagram below shows an investigation that was carried out by Hasnan

Diagram 5

Distance of the object fromthe light source (cm) 70 140 210 280

Height of the shadow (cm)40 30 20 10

a) State

(i) what is changed (manipulated variable) in this investigation..



.

height


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11. Diagram 7 below shows three pendulums with different length. Each pendulums bobs have the samemass. All of the pendulums are swing at the same time. The number of pendulum swings in10 secondsis recorded.

W

X

Y

Diagram 7

Pendulum Length of pendulum (cm) Number of Swings

W 10 20

X 20 10

Y 30 5

a) State


.



.

Year 4 pupil investigate the time taken to dissolved the same amount of sugar inthe 200ml of water at different temperature.

30OC 50OC 70OC 90OCTime: 90 sec Time: 60 sec Time: 40 sec Time: 30 sec

Diagram 7

a) State


.


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.

13. An investigation is carried out to study the stretching of a spring when differentamount of force is applied. Some marbles are hung at one end of the spring. Thelength of the spring is measured each time the marbles are added.

Number of marbles Length of spring (cm)

10 20

20 3030 40

40 50

a) State


.


(iii) what is kept the same (constant variable) in this investigation..

ruler

Plastic bag

marble

Retort stand


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14. Table below shows the population of pangolins found in the jungle from the year2000 to 2003

Year2000 2001 2002 2003

The population of pangolins3000 2600 2200 1800

a) State two information gathered in this investigation.

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

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

The following graph shows the number of tigers found in the Jungle.


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

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

2004 2005 2006 2007

7

6

5

4

3

2

1

Year

Tahun

Number of tiger

Bilangan Harimau


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16. A group of pupils investigate the rate of absorption using three different size ofsponges X , Y and Z . Each beaker is filled with 500 ml of water. The amount ofwater absorb is measured using a measuring cylinder.

Table below shows the result.

ZYXSponge

305070Volume of water collected (ml)

a) State


.


The table below shows the results of a fair test about the growth of a plant.

Day 3 5 7 9 11 13

Height (cm) 15 18 21 ? 27 30

a) State


.


Sponge X

Span X

Sponge Z

Span Z

Sponge Y

Span Y


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Mohamad plants a balsam plant outside his house. He waters the balsam planteveryday. He records the height of the balsam plant in the table below.

Day Height of the balsam plant

10 5 cm

15 7 cm

20 9 cm

25 X


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

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

19.The table shows the amount of petroleum produced from Year 2004 to Year 2008.

Year Amount of petroleum produced

2004 630 000 barrels

2005 540 000 barrels

2006 470 000 barrels

2007 420 000 barrels

2008 339 000 barrels


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

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


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20. The following diagram shows the result of an experiment.

Observation: The bulbs in circuit S are brighter than the bulbs in circuit R.


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

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

Diagram 20 shows water being boiled in a kettle using firewood.

The information about the process is stated in the table below.

Number of firewood used to beburned(pieces) 10 12 14 16 18 20

Time to heat the water(minutes) 15 13 11 9 7 5


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

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

.

Diagram below shows an experiment carried out by Hamdan. A number of


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weights are hung to each object until it is bent

Table below shows the result of the experiment above.

Object Satay sticks Straw Iron rod

Number of weights hang4 1 10


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

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

23. Izzul puts four objects into the water in a beaker which is left for 1 week.

The table below shows the result of the fair test

a) State


.


Objects Rusting

Yes No

Paper clip /Marble /

Thumbtack /Cork /

waterbeaker


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24. The diagram shows a fair test carried out by Azizon. She puts a blue litmus paperand a red litmus paper in substance Z.

a) State


.


25. A fair test is carried out to investigate the strength of material for making a cylinder. The same type ofwood are placed on the structure shown in the diagram.

Paper Plastic Polystyrene

The result is shown in the table below

a) State



Type of Cylinder Paper Plastic Polystyrene

Number of wood each structure cansupport

1 3 2


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26 A group of pupils carried out a fair test to find out factors that cause iron to rust

The table below shows the result of the fair test.

Test tube Condition of iron nailP Rust

Q RustR Does not rust

S Does not rust

a) State


.


27 A group of pupils carried out an activity using a toy cars. The bar chart below showsthe information they have obtained.

Anhydrous calcium

chloride

P

R

oil

S

boiled

water

Moist cotton

wool

Q


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a) State


.


28 An investigation is carried to find out the size of the shadow form on the screen whenthe object is placed at different distances from the light source.

The results of the fair test are recorded in this table below.

Distance an object with torch (cm) Size of the shadow formed onthe screen (cm)

100 4

80 660 8

40 1020 12

a) State

10

20

30

40

50

60

2 4 6 8 10 12

Number of dry cell

Speed (m/s)

torch

object

shadow

screen


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.


29 The graph below shows the number of turtles found in Rantau Abang from year2002 to year 2006.

a) State


.


Ani carried a fair test to investigate factor effecting evaporation. She puts 20mlof water in the same type and size of containers. The containers are put at 3different places. The time taken for the water in each in each containerevaporate completely is shown below

a) State

Number ofturles found

Year

At room temperature45 minutes

Under the fan30 minutes

Under the sun10 minutes


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31 A group of students carried out an activity to study the numbers of chest movement and the runningdistance. The bar chart below shows the results of the activity.

80

70

60

50

40

30

20

10

20 40 60 80 100

a) State



Running distance / metre

The numbers of chest movement in

one minute.


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32 Johnny plants a balsam plant .He waters the balsam plan every day. He records theheight of the balsam plant in the table below.

Day Height of the balsam plant./ cm

5 6

7 10

9 14

11 18

13 22


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

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

33 The following table shows the numbers of orang utans found in jungle.

Year 1998 2000 2002 2004 2006

Number of orang utans 100 90 80 70

a) State


.


34. Ali carried out an investigation using a pendulum. The mass of the pendulum bobsR, S and are the same. The pendulums are swing at the same time. The number


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of swings are shown in the table below.

Pendulum Length of string (cm) Number of swings in 30 seconds

R 10 cm 45

S 15 cm 39

T 20 cm 34


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

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

35. Diagram below shows an investigation carried out by Fiza. She puts three different

sizes of sponge in three containers. Each container contains 500 ml water.

Container Amount of water left (ml)

P 450Q 400

R 300

a) State


500 mlwater

500 mlwater

Container P Container Q Container R


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.



.

36 The graph below shows the observation of an experiment conducted by a group ofpupils.


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

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

37 Diagram below shows an investigation carried out by Arissa. Three circuits withdifferent number of batteries are used in this investigation.

Table below shows the brightness of the bulb in each circuit.

a) State


Number of batteries 1 2 3

Brightness of bulbs Dim Bright Very bright

The type of

surface

The distance of the ball

(cm)

Carpet Sandpaper Glass

16

30

65


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.



.

38 Farid tries to break two rulers of the same size but made up of different materials.His observations are recorded in the table below.

Plastic ruler Steel rul

Types of ruler Observation

Plastic ruler Can be broken

Steel ruler Cannot be broken

a) State


.



39 A group of pupils carries out an activity using a toy cars. The bar chart below shows the information theyhave obtained.


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a) State

(i) what is changed (manipulated variable) in this investigation..



.

39 Figure below shows the apparatus set up by a group of pupils. The fan wasadjusted to speed 1 for 10 seconds. The distance traveled by the trolleystarting from X, was recorded. This was repeated using 2 and 3 respectively.

Speed of the fan Distance traveled (cm)

1 100

2 150

3 200

a) State


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.



.

40 20 mlofwater is boiled in a test tube. The temperature of the water is measured.every 2 minutes. The heating is stopped after 6 minutes.

Observation

Time ( minute ) 0 2 4 6

Water temperature ( o C ) 26 38 50 62

a) State


.



.


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41 Maria carried out an investigation to test the ability of objects to light up a bulb inan electric circuit. Each object listed in the table below is connected to a battery.

The results are shown below.

Group X( The bulb light up )

Group Y( The bulb does not light up )

Thumbtack

Coin

Safety pin

Paper strip

Straw

Crayon

a) State


.



.

42 The diagram shows an investigation conducted by Zakri. A piece of wire istied to an iron ball. Then the wire is heated and the length of the wire is measured inevery 5 minutes.


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Time of heating (min) 0 5 10 15 20 25Length of wire (cm ) 5 7 10 14 15 26

a) State


.



.

43 The graph below shows the length of the shadows of a pole measurefrom10.00am to 4.00pm .

Morning Morning Morning Afternoon Evening Evening Evening

a) State


Length of shadows

( cm )


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.



.

44. Diagram 3 shows the positions of three planets from the Sun.

DIAGRAM 3

Table 1 shows the period for one complete movement of the planets around theSun.

Planet Period for one completemovement (years)

X 2

Y 12

Z 84

a) State


.



.


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45 Hasif investigate the relationship between the distance of an object from the screenand the size of the shadow formed.

Distance between screen and pencil(cm) 5 10 15 20 25 30

Length of the shadow (cm) 50 45 40 35 30

a) State


.



46 Syamsul carries out an investigation to study the ability of different objects obsorbing water.He puts theobjects in four beakers. Each beakers is the same size and contain the same volume of water. He recordthe time taken by the objects to absorb water.


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These are Syamsuls results:

Type of object Tissue paper Cotton Hand towel Sponge

Time taken toabsord (sec)

5 15 23 40

Table 2

a) State


.


47 When eight tissue papers are moistened, their total weight is 200g. The tissuepapers are put to dry and their weights are recorded every hour. The result of the

Tissue paper

Cotton

Hand towel

Sponge


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investigation is recorded in the table below.

a) State


.



.

Time Total weight of eight tissue paper/g

1 hour

2 hour

3 hour

4 hour

180

160

135

110

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