Impuls New 1

7/29/2019 Impuls New 1

1/35

15. A group of pupils carried out an investigation. They left a plate of rice on the table and another in therefrigerator. . .The table below shows the result after five days. , .

a) State :

:(i) what is changed (manipulated variable) in this investigation,

() , (K11)

(ii) what is obeserved (responding variable) in this investigation, () , (K12)

(iii) what is kept the same (constant variable) in this investigation, ( ) , (K13)

b) State two information gathered in this investigation? .(K10)

1.

2.

c) What is the purpose (aim) of this investigation? ? (K6)

.

.

d) Give one reason (inference) for the condition of rice placed on the table?

Rice

Observation

On the table

Becomes slimy and mouldy

.

In the refrigerator

Has not become slimy and mouldy .


2/35

() . (K7)

.

.

e) Write one otherobservation to support the answer in 15 (d).

15 (d) .

.

.

f)

State one relationship between the two information gathered in the above statement. , .(K8)

.

.

g) What conclusion can be made from this investigation? ? (K9)

.

.

h)

Give one reason (inference) based on the statement above. () .

.

.

16. The Diagram 16 below shows an investigation. 16 .

The growth of microorganisms depends on the temperature of rice. .

A cup of milk is left on the table. After three days the milk turns sour and becomescurds. . .


3/35

Observation after three days: .

1. Fish P gives out an unpleasant smell. P .

2. Fish Q does not smell bad. Q .

a) State :.

(i) what is changed (manipulated variable) in this investigation, ? (K11)

.

(ii) what is obeserved (responding variable) in this investigation, . (K12)

.

(iii) what is kept the same (constant variable) in thisinvestigation,

( ) . (K13)

.

b) State one information gathered in this investigation? . (K10)

.


.

.

d) State one reason (inference) for the condition of fish P and Q after three days. P Q ( ) .(K1)

A fish has not been rubbed with salt is

placed on a plate. .

A fish has been rubbed with salt is

placed on a plate. .

QP


4/35

.

.

e) Write one otherobservation to support the answer in 16 (d).16 (d) . (K3)

.

.

f) What is relationship between the presence of salt and the condition of fish Q after three days. Q ? (K8)

.

.


.

.

h)

State one relationship between the two information gathered in the above statement. .(K8)

.

.

17. Diagram 17 shows some fish which are stored in different ways in two containers X and Y. 17 X Y .

How long the fish can stay fresh depends on the temperature. .


5/35

Diagram 17 17

Table 17.1 shows the results of their investigation. 17 ..

Container

Condition of fish

Day 1

Day 2

Day 3

XFresh

Less fresh

Have a bad smell

YFresh

Fresh

Fresh

Table 17.117.1

a) State : :

(i) what is changed (manipulated variable) in this investigation, , (K11)

..

(ii) what is obeserved (responding variable) in this investigation, ., (K12)

..

(iii) what is kept the same (constant variable) in this investigation, ( ) . (K13)

.

b) State two information gathered in this investigation? (K10)

1. .

2. .

c) What is the purpose (aim) of this investigation?

Container X(without ice)( X ( )

Container Y(with ice) Y (

)


6/35

? (K6)

.

.

d) State one reason (inference) for the condition of fish in container X and Y on day 3. X Y

( ) .. (K1)

.

.

e) Write one otherobservation to support the answer in 17 (d).17 (d) . (K3)

.

.

f) What conclusion can be made from this investigation? ?( (K9)

.

.

g) State one relationship between the two information gathered in the above statement. . (K8)

.

.

18. The picture below shows the condition of river Q in the year 2010 and the year 2012. -

..

The condition of fish can stay fresh depends on the amount of ice. .


7/35

a) State ::

(i) what is changed (manipulated variable) in this investigation,(K11)

..

(ii) what is obeserved (responding variable) in this investigation, (K12)

..

(iii) what is kept the same (constant variable) in this investigation,, (K13)

..


1. ..

2. .c) What is the purpose (aim) of this investigation?

?(K6)

.

.

d) State one reason (inference) about the condition of river Q in the year 2012.-

. (K1)

.

. e) Write one otherobservation to support the answer in 18 (d).18

(K3)

.

2010 2012


8/35

.

f) State one relationship between the two information gathered in the above statement.

. (K8)

.

.

g) What conclusion can be made from this investigation?? (K9)

.

.

h)

Give one reason (inference) based on the statement above.

. (K1)

.

.

19. A group of pupils had investigated a few ways of the food preservation.

.

The rate of water pollution in the river affects the number of aquatic animals and plantsdies.

River Q became polluted in year 2012 than 2010.2010 - .


9/35

a) State ::

(i) what is changed (manipulated variable) in this investigation,(K11)

...

(ii) what is obeserved (responding variable) in this investigation, (K12)

..

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

(K13)

..


1. .

2. .

c) What is the purpose (aim) of this investigation? ?(K6)

.

.

0

1

2

3

4

5

Freezing

Penyejukbekuan

Pasteurising

Pempasteuran

Pickling

Penjerukan

Canning

Pengetinan

The ways of preservation

Time taken food to spoil (month)


10/35

d) What is trend of change time taken food to spoil during this investigation?

?

.

.

e) State one reason (inference) based on the observation on canning method?

.(K1)

.

.

f) Write one otherobservation to support the answer in 19 (e).19-

(K3)

.

.

g) State one relationship between the two information gathered in the above statement.

. (K8)

.

.

h) What conclusion can be made from this investigation?? (K9)

.

.

Time taken food to spoil depends on the presence of air..


11/35

20. Azman carried out an investigation. He put a rotten fruit in container P and a piece of glass in container QHe observed container P and Q after a week. The Table 20 below shows his observation. - -

P -

.

Container

Waste

Decayed

PRotten fruit

QGlass

Table 20 20

a) State ::

(i) what is changed (manipulated variable) in this investigation, , ( ), (K11)

..

(ii) what is obeserved (responding variable) in this investigation, , ( ), (K12)

..

(iii) what is kept the same (constant variable) in this investigation, , ( ), (K13)

..

b) State two information gathered in this investigation? . (K10

1. ..

2. ...



12/35

.

. d) State one reason (inference) about the condition of rotten fruit and glass after a week?

() . (K1)

.

.

e) Write one otherobservation to support the answer in 20 (d).20(d) . (K3)

.

.

f) State one relationship between the two information gathered in the above statement. () . (K8)

.

.


.

.

h)

Give one reason (inference) based on the statement above. () . (K1)

.

.

The presence of bacteria and fungi affects the time taken organic waste to decay.

The glass not decays after a week.


13/35

21. Azman and his group carried out an investigation. They put some remains of food into box P. Then theyput some remains food in a plastic bag, tied the bag and placed it into box Q. Diagram 21 shows theirobservation after three hours. P- . , Q- .

Diagram 21 21

a) State : :


..


..


..

b) State two information gathered in this investigation? . (K10)

1.

2.


0

5

10

15

20

25

30

P Q

The number of flies

Box


14/35

.

.

d) State one reason (inference) to explain why many flies are flying around box P? P- () . (K1)

.

.


.

.

f) State one relationship between the two information gathered in theabove statement. () . (K8)

.

.


.

.

h)


.

. 22. Diagram 22 shows an investigation carried out by a pupil. He filled jar P with water from a drain and

jar Q with water from a river. He put five fish into each jar.

Way the remains of food are disposed affects the number of flies.

The remains of food decay faster than plastic.


15/35

22, . P- Q- . , .

Diagram 21 21

Table 21.1 shows the result of this investigation after three days. 21.1

Jar

Number of dead fish

PQ

50

Table 21.1 21.1

a) State :

:


..


..


..


1.

Water fromthe drain

River water

Jar P P

Jar Q Q


16/35

2.


.

.

d) State one reason (inference) based on this information? () . (K1)

.

.

e) Write one otherobservation on the condition of the fish in jar P to support the answer in 22 (d).22(d) P-

. (K3)

.

.

f) State one relationship between the two information gathered in the above statement.

() . (K8)

.

.


.

.

23. Table 23 shows the information gathered by a group of pupils during an Eclipse of the Moon. 23, .

Time 8.40 p.m. 9.30 p.m. 10.30 11.30 12.10

The number fish dies depends on the rate of water river pollution. .


17/35

Table 23 23

a) State ::


..


..



1.

2.


.

.

d) What is the trend of change in the brightness of the Moon that can be observed during theeclipse of the Moon? , . (K7)

.

8.40 9.30 p.m.10.30

p.m.11.30

a.m.12.10

Stage ofEclipseof theMoon


18/35

.

e) State the relationship between the time and the brightness of the Moon during eclipse ofthe Moon occurs. () . (K8)

.

.

f) What conclusion can be made from this investigation? ? (K9)

.

.

g)


.

.

24. Diagram 24 shows an observation recorded by a group of pupils in their investigation. 24

.

At 2.00 a.m. on the same day, the Moon cannot be seen. , 2.00


19/35

Diagram 24 24

a) State : :


..


..


..


1.

2.


.

.

d) Based on the Diagram 24, write one observation on the surface of the ping-pong ball C. 24 , -

. (K3)


20/35

.

.

e) State two reason (inference) about the property of light based on the observation in this investigation. () .(K1)

.

.


.

.

25. Table 25 shows the information gathered by a group of pupils who observed the eclipse ofthe Moon from a observation centre.


21/35

.

Stages of an Eclipse of theMoon

Colour of the Moon

Before the eclipse

Yellow

The partial eclipse

Dark grey

The total eclipse

Reddish

Table 25 25

a) State :

:

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

, ( ), (K11)

..

(ii) what is obeserved (responding variable) in this investigation,

, ( ),(K12)

..


..


1.

2.


.

.


22/35

26. Diagram 26 below shows an observation by a group of pupils at a place during eclipse of the Sun. 26

Diagram 26 26

a) State ::


..


..


..


1.

2.


.

.

d) State one reason (inference) for the situation 1.15 p.m.? 1.15 () . (K1)

11.30 a.m. (before the eclipseof the Sun)

1.15 p.m. (during a total the eclipseof the Sun)


23/35

.

.

e) Write one otherobservation to support the answer in 26 (d).26( d) . (K3)

.

.


.

.

h)


.

.

27. Table 27 shows the information gathered by a group of pupils who observed the eclipse ofthe Sun in town P. 27, P - .

At 2.00 p.m. on the same day, the Sun cannot be seen. 2.00 ,


24/35

Time

Situation in town P P-

12.45 p.m. 12.45

Bright

1.00 p.m. 1.00

Begins to get dark

1.15 p.m. 1.15

Becomes as dark as night

1.30 p.m. 1.30

Becomes gradually brighter

Table 27 27

a) State ::


..

(ii) what is obeserved (responding variable) in this investigation, , (K12)

..

(iii) what is kept the same (constant variable) in this investigation, , (K13)

..

b) State two information gathered in this investigation? ? (K10)

1.

2.


.

.

d) Give one reason (inference) for the situation in town P at 1.15 p.m.


25/35

1.15- P- .(K1)

.

.


.

.

f) What is the trend of change of darkness town P from 12.45 p.m. to 1.30 p.m.? P- 12.45 - 1.30 ?

.

.

g) What conclusion can be made from this investigation? ,? (K9)

.

.

h)

Give one reason (inference) based on the statement above. . (K1)

.

.

28. Table 28 shows the information gathered by a group of pupils in an investigation. 28, .

Way to open the lid of atin

Observation

The lid of the tin is

At 2.00 p.m. on the same day, the Sun cannot be seen. 2.00 .


26/35

Using the bare hands

difficult to open

Using a steel spoon

The lid of the tin can beopened easily

Table 2828

a)State ::


..


..


..


1.

2.


.

.

d) State one reason (inference) based on these information? . (K1)

.

.

e) Write one observation to support the answer in 28 (d).28(d)- . (K3)


27/35

.

.

f) State one relationship between the two information gathered in the above statement. . (K8)

.

.

g) What conclusion can be made from this investigation? ?(K9)

.

.

29. Azman is carrying out an investigation. Diagram 29.1 and Diagram 29.2 shows Azmantrying to lift a load using a lever. He finds that larger amount of force is used to lift theload with the lever shown Diagram 29.1 compared Diagram 29.2. 9 9 . 29.1- 29.2-

.

The ability to open the lid a tin is depends on whether a simple machine is used or not. .

Load

LoadForce

Force


28/35

a) State ::


..


..


..


1.

2.


.

. d) State one reason (inference) based on these information? . (K1)

.

.

e) Write one observation to support the answer in 29 (d).29(d)- . . (K3)

.

.

Diagram 29.1 29.1

Diagram 29.2 29.2

Fulcrum


29/35


.

.

g) What conclusion can be made from this investigation? ?(K9)

.

.

30. Diagram 30 shows an investigation carried out by a group of pupil. They used differentnumber of pulleys to lift up the same load. 30 . .

The distance between the load and fulcrum affects the amount of force to lift up the load. .


30/35

Diagram 30 30

Table 30 shows the result of this investigation. 30 .

Number of pulleys

Reading on the spring balance when the load started to move (g)

(g)

1 102 8

Table 30 30

a) State ::

(i) what is changed (manipulated variable) in this investigation ? ? ( ) (K11)

..

(ii) what is obeserved (responding variable) in this investigation, ? ( )(K12)

..

(iii) what is kept the same (constant variable) in this investigation, ?( )(K13)

..

b) State two information gathered in this investigation?

. (K10)

1.

2.


.

.

d) State one reason (inference) based on these information. () .(K1)

.

.

e) Write one observation to support the answer in 30 (d).30(d)- .. (K3)


31/35

.

.


.

.


.

.

h) When three pulleys are used to pull the load, reading on the spring balance is 6. What willbe the reading on the spring balance if four pulleys are used? , 6-. ? (K4)

.

.

31. Azman and Halim are carrying out an investigation. Diagram 31.1 shows Azman pulling aload. He finds it difficult to pulling the load. . 31, . .

Diagram 31.1 31.1

Halim design a trolley to help him to pull the load. Diagram 31.2 shows that Halim findsit easier to pull the load using the trolley.

The effort to pull the load depends on the number of pulleys. .


32/35

. 31.2 .

.

Diagram 31.2 31.2

a) State ::

(i) what is changed (manipulated variable) in this investigation, ? ( ) (K11)

..

(ii) what is obeserved (responding variable) in this investigation, ? ( ), (K12)

..


..


1.

2.

c) What is the purpose (aim) of this investigation?

? (K6)

.

.

d) State one reason (inference) based on these information? ().(K1)

.


33/35

.


.

.


.

.


.

.

32. Diagram 32 shows the area of lawn mowed in 10 minutes by using a sickle and lawnmower. 32, 10 .

The area of lawn mowedin 10 minutes (m)10 (m)

The number of wheels of trolley affects the ability to pull the load


34/35

Diagram 32 32

a) State ::

(i) what is changed (manipulated variable) in this investigation, ? ( ) (K11)

..

(ii) what is obeserved (responding variable) in this investigation, ? ( )(K12)

..


..


1.

2.


.

.

d) State one reason (inference) based on these information? () .( (K1)

.

0

5

10

15

Using a sickle Using a lawnmower

The way to mow the lawn


35/35

.


.

.

f) What is the trend of change the area of lawn mowed in 10 minutes?10 ? (K7)

.

.

g) State one relationship between the two information gathered in the above statement. .. (K8)

.

.

h) What conclusion can be made from this investigation? ? (K9)

.

.

The area of lawn mowed in 10 minutes depends on whether a complex machine is used or not.10

.

Documents

Impuls New 1