SULIT 2 028 Section B

B 组

[20 marks] [20 分]

Answer all questions. Write your answers in the space provided. 回答全部问题。答案须写在试题中指定的地方。. 1 Ahmad gathered the information about the number of species of fish in the river at Palong. The information was recorded in Table 1. 阿末在巴弄的一条河流进行收集有关鱼的品种的研究。有关研究结果被记录在表 1 中。

Table 1 表 1

(a) State one reason (Inference) about the changes of the number of fish species based on the information in Table 1. 根据表 1 的资料，试提出一个鱼的品种的数量变化的原因（推断）。 ______________________________________________________________________

(1mark) (1 分)

(b) Write one observation to support your reason (inference) in 1(a). 写出一项观察以支持你在 1（a）项的原因（推断）。 ______________________________________________________________________

(1mark) (1 分)

(c) State 写出 (i) What is changed (manipulated variable) in this investigation? 这项实验中必须改变的事项（操纵性变数） _______________________________________________________________

(1mark) (1 分)

Year 年份 2000 2005 2010

Number of the fish species 鱼的品种数量 5 8 12

SULIT 2 028 (ii) What is kept the same (constant variable) in this investigation? 这项实验中必须固定的事项(固定性变数)。 _______________________________________________________________

(1mark) (1 分)

(d) What conclusion can be made from this investigation? 根据这项研究，可作出的结论是什么?

_________________________________________________________________

(1mark) (1 分)

SULIT 2 028

70

90

Time/minutes 时间 /分钟

Temperature of liquid T ºC 液体 T 的温度 ºC

5 10 15 30

10

20

35

30

40

50

60

80

40 45

100

2 Diagram 1 shows the result of an investigation about the heating of liquid T. 图 1 显示液体 T 被加热的实验结果。 Diagram 1 图 1

SULIT 3 028 (a) What is the purpose (aim) of this investigation? 这项实验的目的是什么? ______________________________________________________________________

(1mark) (1 分)

（b）State one information gathered in this investigation.

写出这项实验中必须收集的一项资料。

(1mark) (1 分)

（c）What is the trend of changes in the temperature of liquid T?

液体 T 温度的变化形式是怎样的?

(1mark) (1 分) （d） State the relationship between the time of heating with temperature of liquid T until

40 minutes. 写出加热至 40 分钟与液体 T 的温度之间的一个关系。

(1mark) (1 分) (e) Based on the investigation, predict what is liquid T.

根据研究，预测液体 T 是什么。 (1mark) (1 分)

SULIT 4 028 3. Diagram 2 shows a group of pupils carried out an investigation about the time for the fish last

longer. Both of fish smeared with different quantity of salt and placed under the Sun within 3 days at the same time and place.

图 2 显示一群学生研究有关鱼保鲜的实验。两条鱼各抹上不同分量的盐并同时置放在相同

的地点曝嗮长达 3 天。

Diagram 2

图 2

Result

实验结果

Fish

鱼

Time for the fish to last longer / days

鱼保鲜的时间 / 天

A 15

B 30

a) State the purpose (aim) of the investigation.

写出实验的目的

_________________________________________________________________

Fish A 鱼 A

Fish B 鱼 B

100g salt 100g 盐

200g salt 200g 盐

SULIT 6 028 __________________________________________________________________ (1 mark)

(1 分) b) What is kept the same (constant variable) in this investigation? 这项实验中必须固定的事项（固定性变数）是什么? _________________________________________________________________ (1mark)

(1 分) (c) State one information gathered in this investigation. 写出这项实验所收集的一项资料。 (1mark) (1 分) (d) What is the trend of change in the time for the fish to last longer when the quantity of salt increase?

当盐的分量增加时，鱼保鲜的时间的变化形式是怎样的？

(1mark) (1 分) Time for fish to last longer affected by the temperature

鱼保鲜的时间受到温度所影响

(e) Based on the statement above, give one suitable conclusion.

根据上述的说明, 写出一个合理的结论。

_________________________________________________________________ __________________________________________________________________

(1 mark) (1 分)

SULIT 6 028 4. Diagram 3 shows three cylinder R, S and T were placed on a piece of board. When the edge M and

N are slowly lifted up, R topples first followed by S and T. 图 3 显示圆柱体 R, S 和 T 被置放在一块木板上。当 M 和 N 的末端被慢慢提起时， 圆柱体

R 先倒下，接着是 S 和 T。 Diagram 3 图 3

(a) State one reason (inference) based on the observation on cylinder R. 根据圆柱体 R 的观察结果写出一个原因（推断）。

(1mark) (1 分)

(b) Write another observation to support your reason (inference) in 4(a). 写出另一个观察以支持你在 4（a）项的原因（推断）。 ______________________________________________________________________

(1mark) (1 分)

c) What is kept the same (constant variable) in this investigation? 在这项研究中，什么是必须固定的事项（固定性变数）? _________________________________________________________________

(1mark) (1 分)

M N

R S T

SULIT 7 028 d) What is changed (manipulated variable) in this investigation? 在这项研究中，什么是必须改变的事项（操纵性变数）? _______________________________________________________________

(1mark) (1 分)

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

在这项实验中可作的结论是什么？ _________________________________________________________________

(1mark) (1 分)

END OF QUESTION PAPER KERTAS SOALAN TAMAT