This P6 Science SA1 paper from Rosyth (2019) covers plants, energy, food chains and the environment, electrical systems, light and shadows and heat and temperature across 62 questions worth 44 marks. Practise Science the way it's tested at P6 level in Singapore, with step-by-step answers on LearnBuddy.
The table below shows some information on four living things, P, Q, R and S.
A tick (✔) shows that the living thing has the characteristic.
Based on the table above, which one of the following correctly identifies the
groups the living things belong to?
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Andrew observed three cells X, Y, Z and completed the table below. A tick (✔)
indicates that the part was observed in the cell.
Based on what he had observed, he classified the three cells X, Y, Z into two
groups.
Which one of the following shows the correct classification?
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The diagram below shows tiny openings called stomata found mostly on the
underside of the leaves. Which one of the following describes the function of the stomata?
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A potted plant is placed in a black box. The amount of oxygen and carbon dioxide
in the box is measured over a few hours.
Which one of the following graphs correctly shows the amount of oxygen and
carbon dioxide in the box over time?
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Jennifer set up an experiment, as shown in the diagram below. She prepared three similar set-ups and left them at three locations, X, Y and Z in her garden, from 12 noon to 1pm. She counted the number of bubbles produced by the hydrilla.
The rate of photosynthesis of the hydrilla was different at X, Y and Z. This was
most likely caused by the amount of ______.
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Ben caught three different types of organisms, D, E and F, from the school pond.
One of them is a plant-eater. He put equal number of water plants into two similar
tanks. In one tank, he put the same number of organisms E and D and in the
other tank, he put the same number of organism E and F.
He monitored both set-ups over a few weeks and recorded the number of
organisms left in each tank at the end of each week. The graphs below show how
the number of organisms changed over time. There was no dead organisms in
the tanks.
Which one of the following food chains correctly shows the above food
relationships?
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The letters, A, B and C below represent organisms in a community and the
arrows show the direction of the flow of energy.
Which of the following correctly represents A, B and C in the community?
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Daphne wanted to find out if the presence of chemical J in water would affect
the growth of organism V. She used the set-up below for her experiment.
Which one of the following set-ups should she use as a control for her
experiment?
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Angle wanted to find out how a certain factor will affect the growth of goldfish.
She listed the following factors. W: Amount of food, X: Size of fish tank, Y: Number of goldfish, Z: Temperature of surrounding. She proposed several experiments which she would like to conduct in the table below. Which one of the following is possible to find out the effect of a certain factor on
the growth of goldfish?
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Zachary walked past a lighted street lamp from point P1 to P5 on a dark night.
Which one of the following graphs best represents the changes in the length of
Zachary's shadow as he walked from point P1 to P5?
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There is a special material that can be seen by motorist from a far distance during
day and night. Daniel used a similar material to measure the light intensity using
a light sensor at positions A, B and C.
He placed the light sensor at A and measured the light intensity as shown below.
He repeated the experiment by placing the light sensor at B followed by C.
At which position(s) would the light intensity be the highest for this special
material?
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Terry started to run down a slope as shown below. Which one of the following describes the changes in kinetic and potential energy as he runs down the slope?
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A dynamo is a gadget that converts kinetic energy into electrical energy. Some
pupils fixed a dynamo to a wheel as shown below and began turning the wheel.
They observed that the bulb lit up after a while. The pupils then turned the pedal
of the wheel at different speed and measured the intensity of the light.
Which one of the following tables correctly shows the most likely results of
their investigation?
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The diagram below shows a battery-operated toy car. When the toy car is
switched on, it moves. Which one of the following correctly shows the energy conversion taking place
when the toy car moves?
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The original length of a spring is 10 cm. Wei Ling did the following actions as
shown below. For which actions, the spring would possess potential energy?
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A driver finds that it is more difficult to drive his car uphill. Which of the
following forces below slow the car down? A: Frictional force, B: Magnetic force,
C: Gravitational force, D: Elastic spring force
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Ravi released a metal ball at a height in the bowl as shown below. He observed
the metal ball rolled to a position then it rolled back.
At which position would the metal ball roll back the first time it was released?
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Refer to the diagram below. At first a ring magnet was hung on a spring. Then a
bar magnet was placed under the ring magnet and the spring stretched less than
before.
Which of the following force(s) is/are acting on the bar magnet? A: Friction,
B: Gravitational, C: Magnetic, D: Elastic spring force
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Jessie conducted an experiment using the set-up below. Jessie gave the cube an identical push. The cube moved a distance along the
surface of material K before stopping. She repeated the experiment with
materials L, M and N. The table below shows her results. Jessie added same amount of oil on the four materials, K, L, M and N. Which
material will be most slippery?
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Mary used some blocks and slides to build the set-up as shown below. She released a'marble at position X and it rolled to position Y and then to position
Z. Which one of the following graphs correctly shows the amount of gravitational
force acting on the marble at positions X, Y and Z?
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Read the following statements about mammals. A: An animal is a mammal because it has 4 legs. B: An animal is a mammal because it can lay eggs. C: An animal is a mammal because it has hair or fur on its outer covering. (a) Which statement would you agree with the most? Explain why. (b) Name the characteristics that will help you put reptiles and fish into two groups as shown above.
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Read the following statements about mammals. A: An animal is a mammal because it has 4 legs. B: An animal is a mammal because it can lay eggs. C: An animal is a mammal because it has hair or fur on its outer covering. (a) Which statement would you agree with the most? Explain why. (b) Name the characteristics that will help you put reptiles and fish into two groups as shown above.
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Andy conducted an experiment with 3 set-ups, X, Y and Z, as shown below. Similar
plants were put in glass containers, watered and placed in an open field for a few
hours during the day. (a) What is the changed variable in the above experiment?
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Andy conducted an experiment with 3 set-ups, X, Y and Z, as shown below. Similar
plants were put in glass containers, watered and placed in an open field for a few
hours during the day. (d) What is the purpose of having set-up X?
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Andy conducted an experiment with 3 set-ups, X, Y and Z, as shown below. Similar
plants were put in glass containers, watered and placed in an open field for a few
hours during the day. (b) Which set-up X, Y or Z will contain the most amount of oxygen after a few hours? Explain your answer.
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Andy conducted an experiment with 3 set-ups, X, Y and Z, as shown below. Similar
plants were put in glass containers, watered and placed in an open field for a few
hours during the day. (c) In which set-up, will the plant not survive after some time? Explain your answer.
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Simon drew the diagram below showing how plants make food. water + gas W → gas X + Substance Z produced (a) Identify the following: gas W: ______, gas X: ______, Substance Y: ______, Substance Z: ______
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Simon drew the diagram below showing how plants make food. water + gas W → gas X + Substance Z produced (c) State the relationship between the temperature of water and the rate of photosynthesis
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Farah used sensors to measure the light intensity and temperature of air in two
different habitats, garden and open field. She recorded the readings in the table
as shown below. (a) Based on the data above, describe how the temperature of air is affected by light
intensity.
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Farah used sensors to measure the light intensity and temperature of air in two
different habitats, garden and open field. She recorded the readings in the table
as shown below. (b) Name two other physical factors that can affect the temperature of air in the two
habitats?
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In a pond, animals and plants depend on one another to form the pond
community. (a) Besides providing food for the animals in the pond, suggest two other reasons why
plants are important to the animals
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In a pond, animals and plants depend on one another to form the pond
community. (b) If there is too much algae growing on the surface of the pond, how will this growth
affect the plants growing inside the pond?
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Study the food web below. (c) A population of bird Q was introduced into the habitat. James said that bird P population will decrease while John said that bird P population will increase. i) Explain how it is possible for James to be correct.
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Study the food web below. (c) A population of bird Q was introduced into the habitat. James said that bird P population will decrease while John said that bird P population will increase. ii) Explain how it is possible for John to be correct.
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The set-up below shows light shining on two shapes A and B made of cardboard.
They are placed at different distances from the torch. (a) Draw the shadow of the object on the screen provided below.
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The set-up below shows light shining on two shapes A and B made of cardboard.
They are placed at different distances from the torch. (b) Explain your answer in (a).
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Benny put some fish balls at room temperature into a pot of boiling soup as shown
in the diagram below. (a) The temperature of the soup decreased after adding the fish balls. Explain why.
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Benny put some fish balls at room temperature into a pot of boiling soup as shown
in the diagram below. (b) The temperature at point A of the fish ball is lower than at point B of the fish ball. State the property of heat to explain the above observation.
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Benny put some fish balls at room temperature into a pot of boiling soup as shown
in the diagram below. (c) Give an example of materials to make the pot and the handle of the pot.
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Study the set-up below. Sarah switched on the fan which was connected to the power source and observed
that the sail boat moved across the tank of water. (a) Write down the energy conversion for the above observation in the boxes below.
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Study the set-up below. Sarah switched on the fan which was connected to the power source and observed
that the sail boat moved across the tank of water. (b) Name the force X.
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Study the set-up below. Sarah switched on the fan which was connected to the power source and observed
that the sail boat moved across the tank of water. (c) If Sarah increase the size of the sail, explain how this will be an advantage.
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Study the set-up below. When the water dripped from container A, the water wheel
would spin and the generator would generate energy for the bulb to work. (a) Name the source of energy for the above set-up.
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Study the set-up below. When the water dripped from container A, the water wheel
would spin and the generator would generate energy for the bulb to work. (b) Using the concept of energy conversion, describe how the turning wheel cause the
bulb to work.
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Study the set-up below. When the water dripped from container A, the water wheel
would spin and the generator would generate energy for the bulb to work. (c) Using the same items in the set-up, suggest an action and give a reason why the
action taken enables the bulb to light up more brightly.
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Alastair conducted an experiment to investigate the effect of a force on two different
springs A and B. He measured the length of the spring before and after a 10g load
was placed on top of each spring. The results are shown in the graph below. (a) Give a reason why the compression of spring A is more than spring B.
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Alastair conducted an experiment to investigate the effect of a force on two different
springs A and B. He measured the length of the spring before and after a 10g load
was placed on top of each spring. The results are shown in the graph below. (b) Describe what will happen when the pump is released.
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Steven took three identical pieces of paper and made three similar planes of
different sizes as shown below. He had a paper plane launcher that is able to throw paper planes. He used the
launcher to throw the three paper planes. He recorded the time taken for each plane
to stay in the air. The table below shows the results. (a) Why must he use a plane launcher to throw the paper plane?
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Steven took three identical pieces of paper and made three similar planes of
different sizes as shown below. He had a paper plane launcher that is able to throw paper planes. He used the
launcher to throw the three paper planes. He recorded the time taken for each plane
to stay in the air. The table below shows the results. (b) Based on the results above what can Steven conclude about the experiment?
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Steven took three identical pieces of paper and made three similar planes of
different sizes as shown below. He had a paper plane launcher that is able to throw paper planes. He used the
launcher to throw the three paper planes. He recorded the time taken for each plane
to stay in the air. The table below shows the results. (c) i) Will the pathway taken by the plane be straight or curved? Put a tick in the
correct box.
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Steven took three identical pieces of paper and made three similar planes of
different sizes as shown below. He had a paper plane launcher that is able to throw paper planes. He used the
launcher to throw the three paper planes. He recorded the time taken for each plane
to stay in the air. The table below shows the results. (c) ii) Explain why.
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