This P3 Science SA1 paper from Nan Hua (2025) contains 8 questions worth 20 marks. Use it as a study reference for Science topics typically tested at P3 level in Singapore schools.
Q1MCQ2 marks
Felicia observed the characteristics of animal A and recorded them below.
• lay eggs
• has three body parts
Which group of animals could animal A belong to?
Q2MCQ2 marks🖼 Visual
Study the flow chart.
Which of the following shows the characteristics represented by A, B and C?
Q3MCQ2 marks🖼 Visual
Jimmy studied the groups of animals below.
How are the animals grouped?
Q4MCQ2 marks🖼 Visual
Sabrina conducted an experiment using the set-up below.
She increased the weight of the object until the material broke.
The aim of the experiment was to find out ____.
Q5MCQ2 marks🖼 Visual
Andy wanted to buy a bag to carry his heavy books.
He recorded the properties of four materials, P, Q, R and S, in the chart below.
Based on the chart, which material should be used to make the strap?
Q6Structured4 marks🖼 Visual
The diagrams below show two living things (Fern and Mushroom).
(a) State one similarity between the fern and the mushroom. [1]
(b) Circle the correct answer. James wanted to find out if (water / food / air) is needed for bread mould to grow based on the experiment conducted. [1]
(c) James suspected that there were holes in the sealed plastic bag used in set-up B. Do you agree? Explain your answer. [2]
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Siti had a metal ruler and a plastic ruler in her pencil case. One day, she accidentally sat on her pencil case and heard a cracking sound. She checked her pencil case and noticed the following changes to her rulers.
Ruler P is broken. Ruler Q is not broken.
(a) Match the materials used for making ruler P and ruler Q.
ruler P • • metal
ruler Q • • plastic
(b) Using the physical property of materials, explain your choice for ruler P in (a). [1]
(c) Other than metal and plastic, name a suitable material for making a ruler. [1]
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Peter wanted to make a bench for his family to sit on.
He tested three materials, W, X and Y, used as part A of the bench.
He placed a 200 kg weight on each material and recorded his observations in the table below.
(a) Which of the materials, W, X, or Y, is most suitable for Peter to use for part A of the bench? Explain your answer. [2]
(b) How would the distance d be affected if a lighter weight is used? [1]
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