P5 Science SA1 2021 — Catholic High

Study the diagram below. Which statement about the diagram shown above is correct?

Caleb filled four identical test tubes, P, Q, R and S, with the same amount of water at different temperatures. He covered the tubes with identical stoppers. The diagram below shows his observations after a few minutes. Which of the following shows the correct order of the test tubes based on the temperature of the water?

The graph below shows the changes in the temperature of water over a period of time. Which of the following correctly identifies the stage when evaporation is happening the fastest?

Michelle wanted to find out if the temperature of water in the plastic container affects the amount of water droplets collected in the cup. The surrounding temperature was 30°C. Which two set-ups should she choose to conduct a fair test?

Three identical beakers W, X and Y were filled with the same amount of water and placed at three different locations for a day. The conditions of the three locations are shown in the table below. Which graph correctly shows the volume of water left in each beaker at the end of the experiment?

Study the diagram below. Which of the following parts should be connected in an electric circuit to light up the bulb?

Study the circuit diagram below. P, Q and R are made of different materials. It is observed that the bulb lights up when the switch is closed. Which of the following correctly represents P, Q and R?

Joshua made four statements about an electric circuit. A. The battery connects the parts of the circuit together. B. The switch allows the circuit to be either open or closed. C. The bulb lights up when the electric current flows through its metal filament. D. Electric current can flow through an open circuit as there is a gap in the circuit. Which statements are correct about an electric circuit?

Roy set up three circuits, P, Q and R, with different objects made of materials X, Y and Z as shown below. Roy made the following observations: A. The bulb in circuit P lit up. B. The bulb in circuit Q did not light up. C. The bulb in circuit R did not light up. What can Roy conclude about materials X, Y and Z?

Kenny wanted to find out how four paper clips, A, B, C and D, on a circuit card were connected. The table below shows the results when a circuit tester was connected to the following pairs of paper clips. Which of the following shows a possible arrangement of the wires behind the circuit card?

Damien took out a tray of ice from the freezer. He saw mist forming above the tray. (a) What is the state of matter of mist? (b) Explain how the mist was formed.

Farah set up two similar circuits as shown below. She realised that the bulb in circuit A did not light up while the bulb in circuit B lit up. Suggest two possible reasons for the bulb in circuit A not to light up.

Edwin had four similar towels, W, X, Y and Z. He dipped each towel into a basin of water and weighed it. He folded X, Y and Z and hung them on a clothes line under the sun as shown below. Edwin weighed the towels at 20-minute intervals and recorded the mass of each towel in the table below. (a) Based on the results above, what can you conclude about the effect of the amount of exposed surface area of the towel on the rate of evaporation? (b) Edwin conducted another experiment with the same aim. He used the same towels. However, they were hung differently as shown below. Edwin's teacher told him that his experiment was not a fair one. Explain why.

Samson moves a metal ring along a coil until it reaches the rest position. The metal ring is connected to the circuit with a wire which is covered with a plastic handle. If the metal ring touches the coil, the bulb lights up. (a) State the property of the metal ring and the coil for the bulb to light up. (b) When the metal ring reaches the rest position, the bulb does not light up. Which of the following could Samson possibly use to cover the rest position? Tick (✓) the correct box(es). [Options: plasticine, steel plate, copper sheet, towel, aluminium foil] (c) Samson has four other similar set-ups. Only one set-up is a closed circuit which allows the bulb to light up only when the metal ring touches the coil. Put a tick (✓) in the box to show which set-up is a closed circuit.