Answer all questions.
1. The following are steps in a scientific investigation. Arrange the steps according to
correct order.
Perform a systematic investigation
Formulate a hypothesis to explain the problem
Write down what had been observed
Decide whether the hypothesis is true
Interpret the observations obtained
Identify the problem
1
Write a report on the investigation
7
[5 marks]
2.
(a)
Label the following laboratory apparatus.
X:
Y:
Z:
[3 marks]
(b)
(c)
Match the following measuring instrument with their functions.
X
To measure the mass of an object
To measure the weight of an object
To measure the volume of an object
[3 marks]
State one difference between mass and weight.
.
[1 mark]
(d)
3. (a)
An astronaut weighs 120 N on the moon. What would his weight be on the
Earth?
..
[1 mark]
State the right instrument to make each measurement listed in the table.
Name of instrument
Quantity to measured
1
50 ml of water
Fixed volume of liquids accurately
Small amount of liquids accurately
[3 marks]
(b)
State the following reading. The area of the each square is 1 cm2.
Area:
(c)
Area:
[2 marks]
Complete the following table.
Physical quantity
Mass
Unit
Symbol
m
Temperature
Ampere
S
[4 marks]
4. Diagram 1 shows an experiment is carried out to determine the volume of a stone and
a cork.
2
(a)
Name the apparatus X.
.
[ 1 mark]
(b)
Name the method used in the experiment.
[ 1 mark]
(c)
Find the volume of the stone in cm3.
.
[ 1 mark]
3
Find the volume of the cork, in cm .
[ 1 mark]
(d)
5. Diagram 2 shows an experiment is carried out to study how to measure the thickness
of the measuring tube by using two measuring tools.
Table 1 shows the results of the experiment.
Measurement
1
Measuring tool X
2.1
Measuring tool Y
2.3
Table 1
(a)
(b)
2
2.2
2.3
Average
2.15
2.30
Name the instrument tools X and Y.
X:
Y:
[2 marks]
What is the thickness of the measuring tube shown in the diagram? (Show the
calculation)
[2 marks]
(c)
State one other thing that can be measured by using the measuring tools as
shown in the diagram.
..
[1 mark]
6. A bottle has the symbol as shown in Diagram 3.
(a)
What does the symbol means?
..
[1 mark]
(b)
Name two chemicals which are of that nature.
..
[2 marks]
(c)
What should be done when the chemical with the symbol in Diagram 3 spilled
on your hand?
..
[1 mark]
(d)
Why it is important to check the label on a chemical bottle before using it?
..
[1 mark]
7. The diagram below shows a microscope.
(a)
Label the parts of the microscope marked with P, Q and R using the following
words.
Diaphragm
(b)
8. (a)
cell.
Mirror
Objective lens
[3 marks]
Based on the diagram, match P, Q and R with the correct functions.
Functions
Parts
To control the amount of light entering the lens
To magnify the specimens
To reflect light into the objective lens
[3 marks]
The following diagram shows a plant cell. Label the structures of the plant
[6 marks]
(b)
Tick () the correct function of the following structure.
Structure
Function
K
Support plant cell
Contains sap cell
N
Control all cell activities
A place for chemical process occur
[2 marks]
(c)
Draw and label an animal cell in the space provided below.
[2 marks]
(d)
State two differences of a plant cell and an animal cell.
.
.
[2 marks]
9. (a)
Microorganisms are living organism that can only be seen under a microscope.
Diagram below shows two microorganisms found in the pond.
P
(a)
Identify the microorganisms above.
P:
Q: .
[2 marks]
(b)
State the characteristic of each microorganism above.
P: ..
Q: .
[2 marks]
(c)
Give another example of microorganism that has the same characteristic with:
P:
10. Diagram below shows several types of human cells.
Q: .
[2 marks]
(a)
Name the cells represented by N and P.
N: .....................
P: ..
[2 marks]
(b)
What are the functions of cell M and cell O?
M:
O: .
[2 marks]
(c)
Diagram below shows the levels of cell organisation.
Give two examples of X.
..
[2 marks]
