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1.

Section B

B[20 marks]

[20]

Answer all questions.

Write your answers in the spaces provided.

Nurul carried out an investigation. She recorded the observation.

Diagram 11

Table 1 shows the results of the investigation.

1

Day

1 2 3 4 5 6 7

Number of spoilt fruits

0 0 1 2 4 7 10

Table 1

1

(a) State one observation based on the investigation.

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(b) State one reason (inference) based on your answer in (a).

(a)

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(c) State

what is change (manipulated variable) in this investigation.

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(d) State one way that can prevent the fruits from getting spoilt.

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2. Diagram 2 shows the investigation that has be done by the pupils in Year 5.

2

Diagram 2

2

(a) What can you observe from the experiment?

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(b) State one reason (inference) based on your answer in (a).

(a)

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(c) What can you conclude from the investigation above?

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(d) State what is measured (responding variable) in this investigation.

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3 Table 2 shows the result of an investigation carried out in a particular place

inKuching.

2

Time Direction of shadow9.00 a.m. West /

11.00 a.m. West /

1.00 p.m. -

3.00 p.m. East /

5.00 p.m. East /

Table 2

2

(a) What is purpose (aim) of the investigation?

_________________________________________________________________

(b) What is kept the same (constant variable) in this investigation?

__________________________________________________________________

(c) What conclusion can be made from this investigation?

_________________________________________________________________

_________________________________________________________________

The Sun appears from the east to the west.

(d) State the relationship between the position of the Sun and the direction of the

shadow.

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______________________

_________________________________________________________________

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4 Four different sizes of wet handkerchiefts, P, Q, R and S are hung under a rotating

fan.

Diagram 3 shows the time taken for the handkerchiefts to dry.

PQR S

3

Diagram 3

3

(a) What is the trend of change in the time taken for P, Q, R and S to dry?

PQR S

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(b) What is changed (manipulated variable) in this investigation?

_____________________________________________________________________

(c) State one reason (inference) about the difference between the time taken for P and S to dry.

PS

____________________________________________________________________

_____________________________________________________________________

(d) State one relationship between the size of the handkerchief and the time taken for the

handkerchief to dry.

_____________________________________________________________________

_____________________________________________________________________

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5. An apparatus is set up as shown in Diagram 4.

4

Diagram 4

4

The test is first carried out using a plank covered with a piece of plastic sheet. The time taken by

the toy car to reach the floor is recorded. The piece of plastic sheet is then replaced with a piece of

sandpaper and the test is repeated.

(a) What is purpose (aim) of the investigation?

_____________________________________________________________________

_____________________________________________________________________

(b) Predict the time taken by the toy car to run down the plank covered with plastic sheet

compared to the plank covered with sandpaper.

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(c) State one information gathered in this investigation.

__________________________________________________________________________

(d) What is the conclusion for this investigation?

___________________________________________________________________________

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__________________________________________________________________________

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