Section A(40 marks)

Answer all questions

1 Figure 1 shows the apparatus found in a science laboratory.

Figure 1(a) Based the words given, name the apparatus in Figure 1:

A ____________________________________________________

B ____________________________________________________

C _____________________________________________________(3 marks)

(b) Which of the above apparatus is used to measure the following:

i. volume of an irregular object

____________________________________________________(1 mark)

ii. 20.1cm3 of an acid

____________________________________________________(1 mark)

iii. time to make 1 complete swing ___________________________________________________ (1 mark)

1

A CB

Measuring cylinder

Burette

Stop watch

2

Q : _______________ Cell K : _________________ Cell L : ________________

Figure 2

(a) Name cells K and L in the spaces provided in Figure 2 . (2 marks)

(b) Q controls all cell activities. Name Q in Figure 2. (1 mark)

(c) Based on the structures R or S in cell L, complete table below

Structure Function of structure

R

S

(2 marks)

(d) Name one structure of the plant cell which is not found in an animal cell.

_____________________________________________________ (1 mark)

(e) State one difference between cell K and cell L.

______________________________________________________ (1 mark)

2

3 Figure 3 shows the various types of system found in the human body.

Figure 3

P : _______________ Q : ______________ R : ______________

(a) Label the systems in Figure 3 using the words below.

(3 marks)

(b) Draw lines to show the correct match between the systems and their functions. Draw the lines as shown below. System Function

(2 marks)

(c) Name one organ in the excretory system.

_______________________________________________________

(1 mark)

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Nervous system

Breaks down complex food into simpler substances

Transmits information all over the body

Excretory system

Digestive system

Nervous system Digestive system Excretory system

Brings nutrients and oxygen to the cells

Gets rid of toxic waste products

4 Figure 4 shows pictures of three states of matter.

Picture 1

______________

Picture 2

________________

Picture 3

________________Figure 4

(a) On Figure 4, label the state of matter for each picture using the following words.

(3 marks)

(b) Base on Picture 1, 2, and 3 draw diagrams to show the arrangement of the particles in each state of matter.

Picture 1 Picture 2 Picture 3

( 3 marks)

(c) Compare the movement of particles in gas and solid. ______________________________________________________

_______________________________________________________

( 1 mark)

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Gas Solid Liquid

gas

water

fruit

5

Figure 5

The apparatus in the figure 5 above is used to measure the volume of an aluminium lump and a piece of cork.

(a) Name the method used in this activity? ___________________________________________________________

( 1mark )(b) What is the volume of the aluminium lump?

_____________________________________ cm³? ( 1 mark )

(c) What is the volume of the cork? ________________________ cm³

( 1 mark )(d)(i) Can the volume of the cork be obtained directly without using the aluminium lump? __________________________________________________________________ ( 1 mark ) (ii) Explain your answer. _________________________________________________________________

__________________________________________________________________ ( 1 mark )

(e) State one precautionary steps that must be taken when using a measuring cylinder to measure the volume of water collected in this activity. ___________________________________________________________________ ( 1 mark )

5

5

6.

Table 6.1 shows the densities of five substances.

Substances Density (g/cm3)Water 1.0

Ethanol 0.79Ice 0.90

Mercury 13.6Copper 8.9

Table 6.1

Figure 6.2 shows the positions of the five substances when placed into a gas jar.

Figure 6.2

(a) Based on the information given in Table 6.1, identify K, M, and Q.

K : ________________________________________________

M : ________________________________________________

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Q : ________________________________________________ (3 marks)

(b) Based on the above information and that given in Table 6.1, explain why an iceberg floats in sea water.

______________________________________________________ (1 mark)

( c) (i) Find the density of substance Z.

Mass of substance Z = 5.0 g

Volume of substance Z = 10 cm3

(2 marks)

(ii) Mark the position of Z in Figure 6.3 if it is placed in the gas jar.

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Sea water has a density of 1.03 g/cm3

Figure 6.3 (1 mark)

(d) Give one example of density in everyday life.

_______________________________________________________ (1 mark)

Section B(20 marks)

Answer all questions

7. Figure 7 shows four types of cells., J, K, L and M which are found in living organisms.

J K

L M

Figure 7

(a) Observe the cells in Figure 7.

Based on your observations, state one characteristic of each cells J, K, L and M.

J : ____________________________________________________

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K : ____________________________________________________

L : ____________________________________________________

M : ____________________________________________________

(4 marks)

(b) Classify cells J, K, L and M in Diagram 7 into two groups based on their common characteristics.

Write the letters of the cells belonging to each group.

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J, K, L, M

Group 1 Group 2Commoncharacteristics

Letters of the cells

(4 marks)

8. A pupil carried out an experiment to determine the time taken for ten complete swings of a pendulum for various lengths of string, as shown in Diagram 8.1 below.

Diagram 8.1

(a)) Based on Diagram 8.1, state the operational definition of “one complete swing”.

…………………………………………………………………………………[1 mark]

(b) State the variables involved in this experiment.

(i) Manipulated variable: ………………………………………………………..

(ii) Responding variable …...……………………………………………………

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Pendulumbob

X Y

(iii) Constant variable: ……….......……………………………………………….

[3 marks]

(c) Diagram 8.2 shows the stop watch used to record the time taken for the pendulum to make ten complete swings with different lengths of string.

The length of pendulum = 15 cm The length of pendulum = 30 cm

The length of pendulum = 45 cm The length of pendulum = 60 cm

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The length of pendulum = 75 cm The length of pendulum = 90 cm

Diagram 8.2

Based on Diagram 8.2, record the readings of the stop watch in Table 8.3.

Length of pendulum (cm) 0 15 30 45 60 75 90

Time taken for ten complete swings (s)

0 10 60

Table 8.1[2 marks]

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(d) Based on Table 8.3, plot a graph the time taken for ten complete swings against the length of the pendulum.

[3 marks]

(e) State the relationship between the time taken for ten complete swings with its length.…………………………………………………………………………………..

[1 mark]

(f) Based on the graph in (c), predict the time taken for ten complete swings if the length of the pendulum is 50 cm.

………………………………………………………………………………..….[1 mark]

(g) If the length of the pendulum is 45 cm, calculate the time taken for one complete swing.

…………………………………………………………………………………...

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Tim

e ta

ken

for

ten

com

plet

e sw

ings

(s)

100

80

60

40

20

0

00

10 20 30 40 50 60 70 80 90 100 Length of pendulum (cm)

[1 mark]

END OF QUESTION PAPER

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