1. Ali received three parcels, D, H and L, that contained styrofoam balls, dish sponges and feathers respectively. He was also given a lever balance to compare the mass of parcels.

Which of the following diagrams best shows how the lever balance would look like?

2. Roy prepared four set-ups, A, B, C and D, using identical measuring cylinders each containing 20 cm³ of water. He placed identical corks and metal cubes in the four set-ups as shown below.
Based on the observation above, what is the volume of the cork and the metal cube respectively?

3. A beaker of boiling substance X was taken off the heat source at K and left to cool in the freezer. The changes in temperature of the substance X over time were recorded and shown in the graph below.

Based on the graph, which of the statement(s) about substance X below is/are true? It is ______.
A     gain heat at JK
B     in liquid state at KL
C     gaining heat at LM
D     in solid state at MN

4. Sue set up an electrical circuit to find out the electrical conductivity of materials Q, R and S. All the components used in the circuit shown below were in working condition.

Sue observed that when the switch was closed, only bulbs B2 and B4 lit up.
Which of the following materials is/are insulator(s) of electricity?

5. Siti conducted an experiment with one of the four circuits, prepared using identical components, as shown below. She then recorded her results in a table as shown below.

Which of the above circuits did Siti use?

6. The diagrams, A and B, below show how a high speed train can move forward faster than a normal train.
Diagram A shows the electromagnet under the train and on the train track. Diagram B shows the rows of magnets lined alongside of the train and inner side of the beam. The arrows show the directions of interactive magnetic force amongst the magnets as the train travels.

Which of the following explanations about the interaction amongst the magnets shown in diagrams A or B is correct?

7. Raj dropped two identical pieces of paper, A and B, from the same height.
He crushed paper A before he dropped them.
Which of the following is likely to be the correct observation and the corresponding reason?

8. The diagram below shows a hammock holding a baby that moves up and down from position A to B, and then from B to A repeatedly.

Which of the following statement(s) about the above hammock is/are true? A    More gravitational force is acting on the baby at B than A.
B    Frictional force is acting on the baby as she moves from A to B.
C    Elastic spring force is pulling the baby in the opposite direction of her weight.
D    Elastic spring force acting on the hammock is increasing as it moves from A to B.

9. Anne made a paper butterfly. She attached the paper butterfly and an inflated balloon on the top and bottom of a straw respectively, as shown below. She then put a string through the straw before attaching it onto two poles.

Which one of the following explains how the paper butterfly moved when the air was released from the united inflated balloon?
The force exerted by the moving air was ______.

10. An experiment was set up to find out the degree of transparency of four sheets of material A, B, C and D. Sheets A and B had cut-outs of different shapes, as shown below.
Which one of the above correctly describes the properties of sheets A, B, C and D?

11. Peter made an object by attaching a wooden disc on a frosted rectangular block. He wanted to find out how the different positions, A and B, of the torch would affect the shadow of the object cast on the screen. The experimental set-up is shown below.

Which of the following shows the changes in the shadow of the object cast on the screen?

12. The diagram below shows an ice cube placed on a metal sheet.

After a while, Martha touched the ends of the metal sheet and her fingers felt cold.
Which one of the following is a possible reason for Martha's observation?

13. An experiment was conducted by placing two identical beakers each containing 100 mℓ of the same liquid in a room with a constant temperature of 25°. The temperature of the liquid in each beaker was different.
After four hours, the temperature of the liquids in both beakers became the same and the volume of liquid left in each beaker was recorded in the table below. Then a fan was placed above one of the beakers for six hours. The volume of liquid left in each beaker was recorded in the table above.
Which of the following correctly identifies the beaker exposed to a fan and the initial temperature, T, of the liquid in beaker A?

14. The diagram below shows two toys, C and D, which are used to shoot a ping pong ball.
The ping pong ball in Toy C will shoot forward when the elastic band is released.
The ping pong ball in Toy D will shoot forward when the handle is released.
Based on the information provided, which of the following graphs shows the relationship between the length of the pull and the elastic potential energy in both toys?

15. The diagram below shows a man walking on a pavement lined with special tiles. During the day, when a person steps on the tiles, electricity is generated. The battery stores energy which is used to light up the street lamps at night.

Based on the information above, which of the following statement(s) is/are correct? A    The amount of electricity stored in the battery increases, as the number of people walking on the pavement increases. B    The amount of electrical energy generated increases, as the number of people walking on the pavement increases. C    As the number of people walking on the pavement increases, the amount of chemical potential e