P3 Science SA2 2023 — Nan Hua

Siti wants to keep a pet mouse. Based on the diagram above, what else must Siti provide so that the mouse can stay alive? Siti needs to provide the mouse with ____.

The diagrams below show how a caterpillar changes over time. Which characteristic of living things is shown above?

Raju saw the following things at the park. He classified them into two groups as shown in the table below. Which one of the following shows the correct classification of A, B, C and D?

Some animals have been placed into groups E, F, G and H as shown in the classification chart below. Peter was given a card with a description on animal X. Animal X: It has wings and can fly. It has hair as its outer covering. It can be found in cool, dark places like caves, trees or even buildings. Based on the description above, in which group, E, F, G or H, should Peter classify animal X?

Study the two living things in the pictures below. Which of the following statements about the two living things above are correct? A Both are always harmful. B Both reproduce by spores. C Both can make their own food. D Both break down things into simpler substances.

The following are some descriptions of living things Q, R and S. Q can grow on dead plants and animals. R can only be seen with the help of a microscope. S is used in baking bread to make the dough rise. Which of the following could Q, R and S be?

The table below lists the characteristics of three animals. Which of the following best represents animals A, B and C?

The diagram below shows the life cycle of animal M. Based on the diagram above, which of the following statements about animal M is/are correct? A Animal M has 3 stages in its life cycle. B Animal M gives birth to its young alive. C At the nymph stage, animal M does not feed. D Egg is the first stage of the life cycle of animal M.

Study the pictures below. Frogs and salamanders are able to live both on land and in water. On land, they breathe through their lungs. In water, they breathe through their ____.

The diagram below shows the life cycle of a butterfly. B represents the adult stage of the butterfly. Four students each made a statement about the butterfly at the various stages. Lily: At stage A, it does not eat and does not move from place to place. Suzy: At stage B, it cannot move around. Yusof: At stage C, it moults several times as it grows. Jason: At stage D, it spends most of its time eating. Which of the students made the correct statement?

The diagram below shows the growth of a young plant with two missing stages P and Q. Which one of the following shows the correct stages for P and Q?

Study the flowchart below. Which of the following correctly represents S, T and U?

The diagram below shows Kumar sitting on a wooden chair and the chair did not break. Wood is used to build the chair because wood ____.

Which of the following materials come from plants?

Peter puts on a pair of toy glasses. What is the property of the material used to make part X so that Peter can still see the words?

Jeremiah conducted an experiment to find out which material, P, Q, R or S, is most suitable for making a raincoat as shown in the diagram below. He soaked each of the four materials, P, Q, R and S, of the same size into four identical beakers containing 150 ml of water each. After two minutes, he removed the materials and recorded the amount of water left in each beaker as shown in the table. Based on the results in the table, which material is most suitable for making a raincoat?

Klinsmann placed three solids into a container of water. These solids are of the same size but are made of three different materials, A, B and C. His observation is shown below. Three of his friends explained his observation. Ali: Only material C is able to sink in water. Beth: All of the materials do not float in water. Charles: Both material A and material B sink in water. Which of the student(s) is/are correct?

Study the flowchart below. Based on the flowchart above, which material, A, B, C or D, is suitable for making part T of the outdoor tent as shown above.

Two bar magnets AB and CD can be arranged as shown below. He placed a compass near D and the direction of the needle reacts as shown below. Which of the following arrangements of the magnets is not possible?

Mary carried out an investigation using three rectangular objects, PQ, RS and TU. She hung each object with a string and brought their ends close to each other. The diagrams below showed her observations. Which of the following about the objects are correct?

Study the diagrams below. Which of the following shows an example of repelling magnets?

Alicia placed a magnet at equal distance from two rods, J and K, as shown below. She observed the movement of both rod J and K and recorded them in the table below. Based on Alicia's observation, which of the following statement(s) is/are correct? A Rod J can be a magnet or a magnetic material. B Rod J is made of a non-magnetic material. C Rod K is a magnet.

A steel bar AB was magnetised using the stroke method for 30 times as shown in diagram 1 below. Diagram 2 shows the magnetic poles of A and B after being magnetised. Another steel bar, CD, was magnetised with 50 strokes as shown in diagram 3. Which of the following is correct?

Terra conducted an experiment to find out how many steel nails were attracted to different parts of a magnet. She labelled four parts of a bar magnet E, F, G and H. The graph below shows her findings. Which of the followings is most likely to be correct?

Animals A, B, C and D have been classified in the flowchart as shown below. (a) Which animal(s), A, B, C or D, has/have feathers as outer covering? [1] (b) Based on the flowchart above, describe all the characteristics of animal B. [1] (c) Based on the flowchart above, state a difference between animal A and animal C. [1] (d) Look at the picture of the animal below carefully. Which animal, A, B, C or D, most likely represents the animal in the picture above? [1]

Study the classification chart below. (a) Write down a suitable heading for Group X and Y. [2] Group X: ____ Group Y: ____ (b) Name the animal group that has a different method of reproduction from the animals in Group Y. [1]

David puts three identical slices of bread in three sealed plastic bags as shown below. Set-up A: Bread placed on the table. Set-up B: Toasted bread placed in the refrigerator. Set-up C: Bread sprinkled with 5 drops of water and placed on the table. (a) Which two set-ups should David use if he wants to find out if water is needed for bread mould to grow? [1] (b) In which set-up above would he first see bread mould growing? [1] (c) Explain your answer for (b). [1]

The diagram below shows the stages in the life cycle of a cockroach and a mealworm beetle. (a) State one difference between the life cycles of a cockroach and a mealworm beetle. [1] (b) State one difference between stage R and X. [1] (c) The diagram below shows stages in the life cycle of a chicken. Arrange the stages in order by filling in the boxes with the correct letters. [1]

Emily observed the growth of plant Q from a seed. Below are the descriptions, A to D, she noted down in her Science journal. Description A: The roots start to grow. Description B: The shoot appears. Description C: When the first leaf unfolds, the plant starts making its own food. Description D: Flowers appear and they slowly develop into fruits. (a) Which above description shows that plant Q has become an adult plant? [1] Emily observed plant Q over 4 weeks. She measured and recorded its height as shown below. (b) Based on the table above, what is the relationship between the number of weeks and the height of the plant? As the number of weeks increases, ____. [1] Emily also wanted to find out if the amount of soil used would affect the growth of a plant. She carried out an experiment based on the set-ups shown below. (c) What is the variable to be changed in this experiment? [1]

The table below shows the properties of three materials, X, Y and Z. (a) Based on the information given in the table above, state the properties of material Z. [1] (b) Yazid conducted an experiment using the set-up below. He wanted to find out which material, X, Y or Z, is most suitable to make a food tray. He recorded the results in the table below. Based on the information in the table, which material, X, Y or Z, is most suitable for making a food tray? Explain your answer. [2] (c) State one variable he should keep constant to ensure the experiment is a fair test. [1]

Halimah grouped some items as shown below. (a) In which group, B or C, should a towel be correctly placed in? [1] Group ____ (b) Choose the possible headings for group B and group C. [1] Group B: ____ Group C: ____

Josh used the set-up below to test a certain property of fabrics, P, Q and R. They are of the same size and thickness but made of different materials. He placed some weights, one at a time, onto the fabric P until it tore. He repeated his test with fabric Q and R and recorded the results in the table below. (a) What property of the fabric was Josh testing? [1] The diagram below shows a school bag used for carrying books. (b) Based on Josh's experiment, which material, P, Q or R, is the most suitable to make the school bag? Explain your answer. [2]

Serena set up an experiment as shown in the diagram below. (a) Beside steel, name another suitable material that can be used to make the nail. [1] (b) Suggest two ways to increase the number of paper clips attracted by the steel nail. [2] (i) ____ (ii) ____

Three magnets, A, B and C, are hanging from strings of the same length. A glass tray of steel paper clips is placed below the magnets. All the magnets are lowered and they attracted a number of steel paper clips as shown below. (a) Based on the diagram above, arrange the magnets, A, B and C, according to their magnetic strength in the boxes provided below. [1] strongest magnet ────────► weakest magnet (b) Melissa wanted to find out the distance travelled by the plastic toy cars fitted with magnets A, B or C as shown below. She observed toy car with magnet A moved away when she pushed the toy car with magnet C towards it. She measured the distance between the two cars and recorded the result in the table below. She repeated the experiment with magnets B and C. (i) Explain why the toy cars with magnets A and C moved away from each other. [1] (ii) Toy cars with magnets B and C also moved away from each other. Based on the magnetic strength of the magnets in (a), what will likely be the distance recorded between the two toy cars? [1] (iii) Explain your answer for (b)(ii). [1]