This P3 Science SA1 paper from Anglo Chinese (2025) contains 9 questions worth 25 marks. Use it as a study reference for Science topics typically tested at P3 level in Singapore schools.
Q1Structured3 marks🖼 Visual
The table shows the characteristics of animals, A, B, C and D.
| Animal | Where it lives | Outer covering | Constant body temperature |
|---|---|---|---|
| A | in water | hair | Yes |
| B | on land | dry skin covered with scales | No |
| C | on land | hard outer covering | No |
| D | on land | feathers | Yes |
(a) Match each picture to the correct animal, A, B, C or D, based on the characteristics listed in the table.
(b) State how animal D reproduces.
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Answer the following questions based on the flow chart.
Flow chart: Animals → Does it breathe through lungs? If No → Does it have hard outer covering? If Yes → Z; if No → Y. If Yes (breathes through lungs) → Does it have wings? If No → X; if Yes → W.
(a) The pictures show a salamander and a mudskipper. Which letter, W, X, Y or Z, best represents the salamander and mudskipper?
Salamander: _____
Mudskipper: _____
(b) State the characteristics of animal W.
(c) (i) Which animal group does animal Z most likely belong to?
The picture shows a spider.
(ii) Based on the picture, explain why the spider does not belong to the same animal group as animal Z.
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Jessica classified some living things into two groups, J and K.
Group J: mushroom (on rotting log), mould (on bread)
Group K: bird's nest fern, lemon plant
(a) Suggest suitable headings for Groups J and K.
Group J: _____
Group K: _____
(b) State where the mushroom and mould in the pictures above get their food from.
Mushroom: _____
Mould: _____
(c) Jessica reclassified the living things into two other groups as shown.
Group L: lemon plant
Group M: mushroom (on rotting log), mould (on bread), bird's nest fern
State the characteristic which Jessica used to regroup the living things.
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(a) The following statements are about bacteria. Write the letter 'T' if the statement is true and 'F' if the statement is false in the box provided.
| Statement | T or F |
|---|---|
| Bacteria can grow. | |
| Bacteria can make their own food. | |
| Bacteria can be seen without a microscope. | |
| Bacteria is used in antibiotics to cure bacterial infections. | |
(b) State one way yeast is useful to us.
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The diagram shows some objects grouped according to the materials they are made from and their properties. Complete the diagram by using the words in the table.
Words available: wood, plastic, flexible, window, rubber, metal, transparent, chair
Objects → branches into 'opaque' and (i) _____.
Under 'opaque': ceramic, (ii) _____, glass [is under (i) branch], (iii) _____.
Under ceramic: vase. Under (ii): tyres. Under glass: (iv) _____. Under (iii): fish tank.
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James blows air into the party pipe which extends out as shown.
(a) What is an important property that we must consider when we make parts X and Y of the party pipe? Place a tick (✓) in the correct box for each of the parts.
| Property | Part X | Part Y |
|---|---|---|
| Ability to sink or float | | |
| Flexibility | | |
| Transparency | | |
| Waterproof | | |
(b) Explain why you chose the property in (a) for part Y.
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Jianfu set up the following experiment to find out which material allows the greatest number of books to be placed on it before it breaks.
He used different materials, P, Q, R and S for the ramp and recorded the number of books placed on the material before it breaks in the table as shown.
| Material | Number of books placed before it breaks |
|---|---|
| P | 19 |
| Q | 5 |
| R | 15 |
| S | 8 |
(a) Name the property of materials that Jianfu is testing in his experiment.
(b) The picture shows a slide at an outdoor playground. Which material, P, Q, R or S, is the most suitable to make part X of the slide? Explain your answer based on the results in the table.
(c) State one other property of the material used to make part X based on the use of the slide.
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Jamal conducted an experiment by placing a 1 kg weight on four strips made of different materials, J, K, L and M.
He measured the distance bent by each material, d, and recorded his results in a graph as shown.
(a) State the property of materials that is tested in this experiment.
(b) Jamal decided to use material K to make part Y of his belt.
(i) Give a reason why material K is the most suitable.
(ii) State a property of the material used to make part Z based on the use of the belt.
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You are given a candlelight and three objects made of different materials, X, Y and Z.
• You may switch on the candlelight by pushing the black switch at its base.
• Please switch off the candlelight after use.
Use the objects and the candlelight to answer the following questions.
(a) Describe how you will use the candlelight to conclude which object, X, Y or Z, is transparent.
(b) Your teacher has placed objects, X, Y and Z, in a container of water as shown on the screen. What can you conclude about the materials' ability to sink or float in water?
Circle your conclusion for each of the object.
X: ( Floats on water / Sinks in water )
Y: ( Floats on water / Sinks in water )
Z: ( Floats on water / Sinks in water )
(c) The picture shows animal X in a tank. You need to design a shelter as shown above for animal X that prefers a dark environment, which material, X, Y or Z, would be the most suitable? Explain your answer.
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