P6 Science CA1 2025 — Methodist Girls

The diagram below shows an animal feeding on a plant. Which of the following statements is/are correct? A The plant gets its energy from the sun. B The animal gets its energy indirectly from the sun. C The animal gets its energy from the plant it eats.

Which of the following do plants need to carry out photosynthesis? A chloroplasts B food-carrying tubes C water-carrying tubes D tiny openings on leaves

Sheila conducted an experiment using a plant that has leaves with green and white parts. The plant was kept in the dark to remove all the food from the leaves. She covered parts of leaves L and M with black paper on both the upper and lower surfaces. A clear plastic bag was also wrapped around leaf M as shown in the diagram below. The plant was then placed under the sun. After a few hours, Sheila plucked three leaves, K, L and M, and tested them for the presence of food. Which one of the following diagrams correctly shows the test results? [Figure: Four options each showing the food-test result for leaves K, L and M (key: filled = food present, unfilled = food absent). (1) K fully present, L green-part present/white-part absent, M absent. (2) K green-part present/white-part absent, L absent, M green-part present/white-part absent. (3) K green-part present/white-part absent, L green-part present/white-part absent, M absent. (4) K fully present, L green-part present/white-part absent, M fully present.]

The solar-powered toy car below lights up and moves when placed under the sun. Which of the following shows the correct energy conversions of the toy car when it is placed under the sun?

Angie dropped a 20 g rubber ball from a height of 3 m. After hitting the floor, the ball bounced up 2 m as shown in the diagram below. Angie dropped another ball made of identical material but of different mass. The ball bounced up higher than 2 m. Which of the following could be the mass of the ball and the height it was dropped from? [Table options: (1) 10 g, 2 m; (2) 10 g, 3 m; (3) 40 g, 2 m; (4) 40 g, 3 m]

A ball placed at point X was released and it rolled down the ramp past point Y and came to a stop at point Z. Based on the above diagram, which of the following statements is/are correct? A The ball has more kinetic energy at point Y than at point Z. B The ball has more potential energy at point Z than at point Y. C The ball has the most kinetic energy at point X before it was released. D The ball has the most potential energy at point X before it was released.

The diagram below shows a toy catapult. When the strap was pulled back and released, the ball moved from position F to G to H. Which of the following statements is correct?

As shown in the diagram below, a spring is compressed and released at P. It moves to Q before it hits the ground. The graphs below show the amount of different types of energy of the spring at P and Q. [Figure: Bar graph 'At P' — bar Y is taller than bar Z (a dashed horizontal reference line passes through the top of Y); bar X is zero. Bar graph 'At Q' — bar X reaches the dashed reference line (same total height as Y + Z combined at P), while bars Y and Z are zero.] Which of the following correctly identifies X, Y and Z?

The diagram below shows how sea waves can be used to produce electricity. When the waves rise, more sea water enters the chamber and the water in the chamber moves up, pushing air through the turbine. The turbine turns and the generator produces electricity. (a) Fill in the boxes to show the energy changes that took place. [Figure: Flow diagram with four blank boxes connected by arrows, labelled below: energy (waves) → energy (air) → energy (turbine) → energy (generator).] [2] (b) State one advantage of using energy from sea waves instead of burning fossil fuels. [1]

Joyce conducted an experiment in a dark room using the set-up shown below. She measured the amount of gas collected in the syringe after 1 hour. (a) Name the gas collected in the syringe. [1] (b) Suggest a reason why the experiment is conducted in a dark room. [1] (c) Keeping all the other variables constant, Joyce repeated the experiment by increasing the number of sheets. She measured and recorded the amount of gas collected after 1 hour. [Figure: Two bar graphs of 'Amount of gas (cm³)' vs 'Number of sheets'. Graph G: the bars get TALLER as the number of sheets increases. Graph H: the bars get SHORTER as the number of sheets increases.] Which graph, G or H, shows the results? Explain your answer. [2]

The diagram below shows a toy placed on a flat surface. When the plunger is pulled back and released, the steel ball moves forward. John pulled the plunger backwards by 3 cm and then released it. He measured the time taken for the steel ball to hit the metal board. He repeated his experiment by pulling the plunger backwards by different distance. The table below shows the results of his experiment. [Table: Distance plunger was pulled back (cm) | Time taken (s) — 3 | 12; 4 | 9; 5 | 6; 6 | 3.] (a) How did the distance at which the plunger was pulled back affect the time taken? [1] (b) Explain your answer in (a) in terms of energy conversion. [1] (c) After the steel ball hit the board, it rolled back and then came to a stop. Give a reason why the ball stopped moving. [1]

The diagram below shows a ball of snow sliding down the slope of a mountain, picking up more snow along the way. (a) Apart from heat and sound energy, state another 2 forms of energy possessed by the ball of snow at position C. [1] (b) Explain how the change in mass of the ball of snow from position B to position C leads to the ball of snow rolling faster. [2] (c) The graph below shows how the kinetic energy of the ball of snow changes as it travels down from positions A to E. [Figure: Graph of 'Amount of kinetic energy (units)' against 'position' with positions X, A, B, C, D, E, F on the x-axis. The original curve starts at A near zero, rises to a peak around D, then falls back to zero at E.] On the same diagram, draw another graph to show how the kinetic energy of the ball of snow changes if it starts rolling from position X and comes to a stop at F. [1]