This P4 Science CA2 paper from Henry Park (2023) contains 12 questions worth 15 marks. Use it as a study reference for Science topics typically tested at P4 level in Singapore schools.
Q1Structured2 marks🖼 Visual
1. Yong Sheng placed a plastic rod and a metal rod into a container of boiling water as shown below. Equal amounts of wax were placed on both rods.
Fill in the blanks in the paragraph below to explain which wax melts first.
Which wax will melt first?
Wax on the ____ rod will melt first.
Metal is a ____ conductor of heat than plastic. Heat from the ____ passes through the metal rod to reach the wax at a ____ rate.
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(c) Now, take an iron nail and stroke it with the bar magnet 30 times in one direction to magnetize it.
Place the iron nail near the staples and record down the number of staples the nail attracted.
Number of staples attracted:
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2. You are given two identical syringes. One syringe is filled with 10 ml of blue water while the other syringe is filled with 10 ml of air.
Follow what you see in the picture below.
One at a time, cover the nozzle of each syringe with a finger and push the plunger of the syringe.
(a) Record your observation in the table below.
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2. Siti conducted an experiment by filling up a measuring cylinder with 30 ml of water. She then lowered a piece of plasticine into the measuring cylinder and observed that the water level rose to 50 ml.
(a) What is the volume of the plasticine?
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4. Siti took out the piece of plasticine and divided it into three smaller pieces. She placed the three smaller pieces of plasticine back into the same measuring cylinder without spilling any water. What would be the reading of the water level? Explain your answer using the properties of matter.
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3. Shafiq set up a flask with a deflated balloon near a feather as shown below.
The flask was supported by a retort stand. He heated the flask using a candle.
(a) Predict what will happen to the feather after a while.
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