Section A

(40 marks)

Answer all questions.

1. Figure 1 shows two kinds of measuring instruments.

X: ___________________ Y: __________________

FIGURE 1

a) Name instruments X and Y in the spaces provided in Figure 1 using provided words.

Spring balance Lever balance

(2 marks)

b) State the usage of each instrument.

X: _________________________________________________________

Y: _________________________________________________________

(2 marks)

c) Which instrument will show the same reading on the Earth and on the Moon?

___________________________________________________________

(1 mark)

d) Explain your answer in (c)

___________________________________________________________

(1 mark)

2. Figure 2 shows a plant cell.

FIGURE 2

a) On Figure 2, label structures P, Q, R and S using the following words:

Nucleus Cell membrane Cell wall Chloroplast

(4 marks)

b) Draw lines to show the correct match between the structures and their functions. Draw the lines as shown below.

Structure	Function
P	o Protects and maintains the shape of the cell
Q	o Regulates movement of substances in and out of the cell
R	o Controls all activities of the cell
S	o Carries out photosynthesis

(4 marks)

3. Figure 3 shows pictures of three states of matter.

Picture 1	Picture 2	Picture 3
X:______________	Y:_____________	Z:_______________

FIGURE 3

a) On Figure 3, label the states of matter for each picture using the following words.

Gas Solid Liquid

(3 marks)

b) Based on pictures 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) State two properties to differentiate between the states of matter.

(i) _____________________________________________________

(ii) _____________________________________________________

(2 marks)

Density = Mass / Volume

4.

a) Complete the following table

Substance	Mass (g)	Volume (cm^3)	Density (g/cm^3)
Olive oil	2.76	3.0
Water	3.0	3.0	1.0
Milk	6.5		1.3
Mercury		10.0	8.0

(3 marks)

b) Based on the result in the above table, draw a labeled diagram to show the positions of the four substances in the beaker.

(4 marks)

5. Figure 5 shows the classification of matter.

Element

Compound

Mixture

FIGURE 5

a) Classify the following substances as elements, compounds or mixtures.

Hydrogen Blood Ammonia Methane Sea water Mercury

(3 marks)

b) The components of a mixture can be separated by using physical method. For each of the mixtures below, state the appropriate method used.

Mixture	Method
Water and salt
Iron filing and sulphur powder
Oil and water

(3 marks)

6. a) Our Earth is rich in varieties of natural resources. Name three natural resources which are needed to sustain life.

i) _________________________________________________________

ii) __________________________________________________________

iii) __________________________________________________________

(3 marks)

b) Give two importance of water to plants.

i) __________________________________________________________

ii) ___________________________________________________________

(2 marks)

Section B

(20 marks)

Answer all questions

7. Figure 6 shows pictures of organisms P, Q, R and S

FIGURE 6

a) Observe the organisms in Figure 6.

Based on your observations, state one characteristic of each organism P, Q, R and S.

P: _________________________________________

Q: __________________________________________

R: __________________________________________

S: __________________________________________

(4 marks)

b) Classify organisms P, Q, R and S in Figure 6 into two groups based on their common characteristics. Write the name of the organisms belonging to each group.

Names of the organisms

Common characteristics

(4 marks)

8. Figure 7 shows an arrangement of apparatuses to study the relationship between the extension of spring and weight of an object. The result of the experiment is recorded in the Table 1. The initial position of the pointer is marked. A weight is hung on the spring. The new position of the pointer is recorded. The experiment is repeated by using different weights.

FIGURE 7

(a) Complete Table 1 by filling in the extension of spring below.

Weight/N	Reading of pointer/cm	Extension of spring/cm
0	10.0	0.0
1.0	12.0	2.0
2.0	14.0
3.0	18.0
4.0	20.0
5.0	22.0

TABLE 1 (3 marks)

(b) State the variables involved in this experiment.

Manipulated variable

Responding variable

Controlled variable

(3 marks)

(c) Based on the data in Table 1, plot a graph of extension of spring against the weight of object.

(3 marks)

(d) State a relationship between the manipulated variable and responding variable.

________________________________________________________

(1 mark)

(e) If weights are added continuously, what will happen to the spring?

________________________________________________________

(1 mark)

(f) If weight of 3.4 N is hung on the spring, what is the extension of the spring (based on the graph)?

_________________________________________________________

(1 mark)

TRY YOUR BEST AND GOOD LUCK!!!!