Solar panels are placed on the rooftops of some houses to produce electricity during daytime.

Which energy received by the solar panels is used to produce electricity?

• light energy

• sound energy

• kinetic energy

• potential energy

Ah Teck placed three solids made of materials X, Y and Z into a container of water. His observation is shown below.

He made two statements:

A - "X and Y are the same material."

B - "Y and Z are different materials."

Which statement(s) can be concluded from his observation?

• A only

• B only

• A and B

• Neither A nor B

Carrie placed a packet of coffee into a mug without overflowing as shown.

Which of the following about the packet of coffee is correct?

• Both the shape and the volume of the coffee did not change.

• The shape of the coffee changed but the volume did not.

• The volume of the coffee changed but the shape did not.

• Both the shape and the volume of the coffee changed.

Substance R is a liquid at 160° C and a gas at 480° C.

Which of the following is possible?

• 1

• 2

• 3

• 4

Jason set up four different circuits using identical bulbs and batteries as shown.

In which circuit would bulb P be the brightest?

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• 
• 
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Firemen wear the clothing as shown when they put out fires.

Based on the properties shown below, which material is most suitable for making the firemen's clothing?

• 1

• 2

• 3

• 4

Jennifer made a game using the objects shown below.

The lower end of the bar was used for catching toy fish.

Rod P could catch fish A and Conly.

Rod Q could catch fish A and B only.

Which of the following shows the bars for rods P and Q?

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• 
• 
• 

Guowei stood under a lamp as shown.

He walked from position W to position X, and then to position Y in a straight line.

Which graph shows how the length of his shadow changed during this time?

• 
• 
• 
• 

Ahmad conducted an experiment by placing two glass beakers each containing 50 ml of liquid L in the same room. The liquids were kept at different temperatures. He measured the volume of liquid L remaining in each beaker after some time. Part of his results are shown in the first table.

Ahmad repeated the experiment using another two beakers with 50 ml of liquid L. This time, the liquids had different exposed surface areas. Part of his results are shown in the second table.

What are the possible values of T and A?

• 1

• 2

• 3

• 4

When three identical blocks were attached to a table top using three identical springs, the springs were compressed.

Which of the following would be observed?

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• 
• 
•