Home Past papers Science P4 Science SA1 2023 — Henry Park
P4 Science SA1 2023 — Henry Park
P4
Science
2023
SA1
18 questions
15 marks
Source: Henry Park, 2023
This P4 Science SA1 paper from Henry Park (2023) contains 18 questions worth 15 marks. Use it as a study reference for Science topics typically tested at P4 level in Singapore schools.
Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q7 Q8 Q8 Q9 Q9 Q9 Q10 Q10 Q11 Q11 Q11
Q1
MCQ
🖼 Visual
Visual context
A diagram showing two adult rabbits on the left, and an arrow pointing to the right where there are two adult rabbits with three smaller young rabbits.
Min Yee bought two adult rabbits. After one year, the two adult rabbits had three more young rabbits. Which characteristic of living things does this show?
(1) Living things die.
(2) Living things move.
(3) Living things reproduce.
(4) Living things respond to changes.
Explanation
The scenario describes two adult rabbits having three young rabbits, which is the process of reproduction. Therefore, this illustrates the characteristic of living things to reproduce.
Q2
MCQ
🖼 Visual
Visual context
A flowchart titled 'Living things'. It starts with 'Does it move on its own?'. 'No' leads to 'A', 'Yes' leads to 'Does it make its own food?'. 'No' from there leads to 'B', 'Yes' leads to 'Does it produce flowers?'. 'No' from there leads to 'C', 'Yes' leads to 'D'. Below the flowchart is a diagram of a plant with a prominent flower, a stem, and leaves, labeled 'flower', 'stem', 'leaf'.
Study the flowchart below carefully. Which letter in the above flowchart best represents the plant above?
(1) A
(2) B
(3) C
(4) D
Explanation
The diagram shows a plant with a flower. Following the flowchart: 'Does it move on its own?' (No for plants) -> 'Does it make its own food?' (Yes for plants) -> 'Does it produce flowers?' (Yes, as shown in the diagram). This path leads to D.
Q3
MCQ
🖼 Visual
Visual context
A diagram showing a spring suspended from a top support, with a magnet attached to its bottom. A table is placed below the magnet. The distance between the spring and the table is labeled 'distance between spring and table'. A position 'X' is marked on the table. A table of results is provided with columns 'Object placed at X' and 'Distance between spring and table (cm)'. Rows are 'No object' (10 cm), 'A' (15 cm), 'B' (10 cm), 'C' (5 cm).
Hannah conducted an experiment using the following set-up. The magnet was hung from the spring. After the spring had stopped moving, Hannah measured the distance between the spring and the table. She repeated the experiment by placing different objects A, B and C at X. Her results are shown in the table below. Based on the results above, what could objects A, B and C be?
(1) copper coin, iron nail, magnet
(2) copper coin, magnet, iron nail
(3) iron nail, magnet, copper coin
(4) magnet, copper coin, magnet
Explanation
Without any object, the distance is 10 cm.
- Object A increases the distance to 15 cm, meaning the hanging magnet was repelled. This occurs if object A is also a magnet with a like pole facing the hanging magnet.
- Object B maintains the distance at 10 cm, meaning it has no magnetic effect. Copper is a non-magnetic material.
- Object C decreases the distance to 5 cm, meaning the hanging magnet was attracted. This occurs if object C is a magnetic material (like iron) or a magnet with an opposite pole facing the hanging magnet.
Based on the options, option (4) 'magnet, copper coin, magnet' fits the observations: A (magnet) repels (increases distance), B (copper coin) has no effect (same distance), C (magnet) attracts (decreases distance).
Q4
MCQ
🖼 Visual
Visual context
A table showing properties of four materials (D, E, F, G). Properties are: 'waterproof' (D:No, E:Yes, F:Yes, G:No), 'allows light to pass through' (D:No, E:Yes, F:No, G:Yes), 'breaks easily' (D:Yes, E:No, F:No, G:Yes). Below the table is a diagram of a pair of spectacles, with the lens labeled as 'part X'.
The properties of four materials, D, E, F and G, are given in the table below. Which material is suitable to make part X of the spectacles shown below?
(1) Material D
(2) Material E
(3) Material F
(4) Material G
Explanation
Part X of the spectacles is the lens. Lenses must be waterproof, allow light to pass through, and not break easily.
- Material D: Not suitable (not waterproof, doesn't allow light, breaks easily).
- Material E: Suitable (waterproof, allows light to pass through, does not break easily).
- Material F: Not suitable (does not allow light to pass through).
- Material G: Not suitable (not waterproof, breaks easily).
Thus, Material E is the most suitable.
Q5
MCQ
🖼 Visual
Visual context
A diagram of the human digestive system. Part S is labeled as the stomach. Part T is labeled as the large intestine.
The diagram below shows the human digestive system. Which of the following statement(s) about parts S and T is/are true? A. Digestion starts at part S and ends at part T. B. Part S has more digested food than part T. C. Both parts S and T contain digestive juices. D. Water is removed from the undigested food in Part T.
(1) A only.
(2) D only.
(3) A and C only.
(4) B and D only.
Explanation
Part S is the stomach, and Part T is the large intestine.
- A. Digestion starts in the mouth, not the stomach (S). So A is false.
- B. Part S (stomach) is where protein digestion begins, and food is being broken down. Part T (large intestine) mainly contains undigested waste and water. Therefore, food in S would be more 'digested' (undergoing breakdown) than the waste in T. So B is true.
- C. Part S (stomach) contains gastric juices. Part T (large intestine) primarily absorbs water and does not produce digestive juices. So C is false.
- D. The main function of Part T (large intestine) is to absorb water from undigested food, forming faeces. So D is true.
Since B and D are true, the correct option is (4).
Q6
Structured
2 marks
🖼 Visual
Visual context
Four identical containers are shown, each initially filled with 90ml of water and containing a cube labeled E, F, G, or H. A table titled 'Material' and 'Amount of water left in the container (ml)' shows the results: E: 90 ml, F: 30 ml, G: 70 ml, H: 0 ml.
Nelly wanted to find out whether four cubes, E, F, G and H, made of different materials could absorb water. All the cubes have the same volume. She placed the cubes into four similar containers each filled with 90ml of water. An hour later, she removed the cubes and recorded the amount of water left in the containers. Arrange the materials from the most absorbent to the least absorbent.
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Q7
Structured
1 mark
🖼 Visual
Visual context
A diagram of a plant, showing the part above ground and the part below ground. Part A is labeled as the stem. Part B is labeled as the roots, shown in the soil below 'ground'.
(a) Name the parts of the plant. Part A is the ____ while part B is the ____.
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Q7
Open-ended
1 mark
🖼 Visual
Visual context
A diagram of a plant, showing the part above ground and the part below ground. Part A is labeled as the stem. Part B is labeled as the roots, shown in the soil below 'ground'.
(b) State the function of part B.
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Q8
Structured
1 mark
🖼 Visual
Visual context
A flowchart titled 'Organ Systems'. It starts with 'Does it help to support the body?'. 'Yes' leads to 'A', 'No' leads to 'Does it take in and remove air from the body?'. 'Yes' from there leads to 'B', 'No' leads to 'Does it carry waste materials away from the different parts of the body?'. 'Yes' from there leads to 'Circulatory system'.
(a) Which organ systems do A and B represent? A: ____ system B: ____ system
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Q8
Structured
1 mark
(b) Which two organ systems work together to provide digested food to all parts of the body? i) ____ system ii) ____ system
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Q9
Open-ended
1 mark
🖼 Visual
Visual context
A flowchart starting with 'Animal'. It branches from 'Does it give birth to its young alive?'. 'Yes' leads to 'D'. 'No' leads to 'Does it breathe through gills?'. 'Yes' leads to 'A'. 'No' leads to 'Does it have feathers?'. 'Yes' leads to 'B', 'No' leads to 'C'.
(a) Based on the flowchart above, state one similarity between animals A and B.
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Q9
Open-ended
1 mark
🖼 Visual
Visual context
A flowchart starting with 'Animal'. It branches from 'Does it give birth to its young alive?'. 'Yes' leads to 'D'. 'No' leads to 'Does it breathe through gills?'. 'Yes' leads to 'A'. 'No' leads to 'Does it have feathers?'. 'Yes' leads to 'B', 'No' leads to 'C'.
(b) Based on the flowchart above, state one difference between animals A and C.
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Q9
Open-ended
1 mark
🖼 Visual
Visual context
A flowchart starting with 'Animal'. It branches from 'Does it give birth to its young alive?'. 'Yes' leads to 'D'. 'No' leads to 'Does it breathe through gills?'. 'Yes' leads to 'A'. 'No' leads to 'Does it have feathers?'. 'Yes' leads to 'B', 'No' leads to 'C'.
(c) Based on the flowchart above, which animal group does animal D belong to?
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Q10
Open-ended
1 mark
🖼 Visual
Visual context
A diagram showing a material clamped to the edge of a table with a 50g weight hanging from its free end. The downward deflection of the material is labeled 'd'. A table shows the 'Material' (P, Q, R) and the 'Distance 'd'' (P: 5, Q: 13, R: 0).
(a) State the property of the materials that Simon is trying to test.
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Q10
Open-ended
1 mark
🖼 Visual
Visual context
A diagram showing a material clamped to the edge of a table with a 50g weight hanging from its free end. The downward deflection of the material is labeled 'd'. A table shows the 'Material' (P, Q, R) and the 'Distance 'd'' (P: 5, Q: 13, R: 0).
(b) Which material, P, Q or R is most suitable for making a bookshelf? Explain your answer.
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Q11
Structured
1 mark
🖼 Visual
Visual context
Three diagrams illustrating the stroking method to magnetize an iron nail. Each diagram shows a bar magnet and an iron nail, with an arrow indicating the stroking direction. Below each diagram is an empty box. The first diagram shows a bar magnet stroking an iron nail from left to right in one direction only. The second diagram shows a bar magnet stroking an iron nail back and forth. The third diagram shows a bar magnet stroking an iron nail from center outwards in two directions.
(a)(i) Tick (✔) the box that shows the correct way of using the stroking method to make the iron nail into a temporary magnet.
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Q11
Open-ended
1 mark
(a)(ii) Describe how Matthew can increase the strength of the temporary magnet.
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Q11
Open-ended
2 marks
🖼 Visual
Visual context
Two bar magnets are shown. The left magnet has its left pole labeled X and its right pole labeled Y. The right magnet has its left pole labeled N (North) and its right pole labeled S (South). An arrow between the two magnets indicates that they are moving away from each other (repelling).
(b) Matthew brought two magnets near to each other but the two magnets moved away from each other. Is Y the North or South Pole? Explain your answer.
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