QTSS Prelim 2024 Sec 4E Science (Physics, Biology) P1 [5087]

This document consists of 20 printed pages. Name: ………………………………………………….. ( ) Class: Sec 4 SG ……... Queenstown Secondary School Preliminary Examination 2024 Secondary Four Express Science (Physics, Biology) 5087/01 28 August 2024 Time: 0945 – 1045h Wednesday Duration: 1 hour Setters: Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and index number on the Answer Sheet in the spaces provided. There are forty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. The use of an approved scientific calculator is expected, where appropriate.

2 Queenstown Secondary School [Turn over 1 A small cylinder is rolled along a ruler and completes two full turns as shown in the diagram. What is the circumference of the cylinder? A 4.4 cm B 5.1 cm C 8.8 cm D 10.2 cm 2 A pendulum bob has a mass of 25 g. The period of the pendulum is 0.50 s. If the mass of the pendulum bob is increased to 50 g, what is the new period? A 0.25 s B 0.50 s C 1.00 s D 2.00 s 3 The following speed-time graph shows the journey of a train. At which point is the acceleration of the train the greatest in magnitude?

3 Queenstown Secondary School [Turn over 4 A box of mass 2.0 kg moves with a constant speed of 0.10 ms-1 when a force of 6.0 N is applied. What is the frictional force and the resultant force acting on the box? frictional force resultant force A 0 N 6.0 N B 3.0 N 0 N C 5.8 N 0.2 N D 6.0 N 0 N 5 A passenger is sitting in an aeroplane which takes off and climbs to 15 000 m in a certain time. During this time what happens to the mass and to the weight of the passenger? mass weight A decreases decreases B increases increases C unchanged decreases D unchanged increases 2.0 kg 0.10 ms-1 6.0 N

4 Queenstown Secondary School [Turn over 6 A bicycle pedal is connected to a pivot by a metal bar, as shown. The force on the pedal is 60 N downwards. What is the moment of this force about the pivot? A 7.2 Nm B 9.6 Nm C 12 Nm D 1200 Nm 7 Which object, A, B, C or D, exerts the greatest pressure on the ground? weight / N area of contact with ground / cm2 A 30 100 B 600 200 C 750 3000 D 10 000 4000 8 A ball bearing of 0.5 g is placed at point X on a smooth track as shown. The ball moves from rest down the track and passes point Y which is 10 m below point X. Take g = 10 m/s2. What is the speed of the ball at point Y? A 10.0 m/s B 14.1 m/s C 100 m/s D 141 m/s 10 m X Y

5 Queenstown Secondary School [Turn over 9 A solid is heated but does not melt. What happened to the molecules of the solid? A Intermolecular bonds are broken. B Molecules move about more vigorously about their fixed positions. C Molecules move randomly with constant speed during this process. D Molecules move randomly with increasing speed during this process. 10 To estimate the width of a valley, a climber starts a stopwatch as he shouts. He hears an echo from the opposite side of the valley after 1.0 s. The sound travels at 340 m/s. What is the width of the valley? A 85 m B 170 m C 340 m D 680 m

6 Queenstown Secondary School [Turn over 11 The diagram shows an object in front of a plane mirror. The mirror forms an image of the object. At which labelled is the image formed, and which type of image is formed? where the image is formed type of image A at M real B at M virtual C at N real D at N virtual 12 The diagram shows a light ray travelling from air into medium X. What is the refractive index of medium X? A 0.778 B 1.13 C 1.29 D 1.35 mirror

7 Queenstown Secondary School [Turn over 13 The diagram shows a converging lens forming an image of an object. Which statement about the image is correct? A It is real and can be seen by an eye at X. B It is real and can be seen by an eye at Y. C It is virtual and can be seen by an eye at X. D It is virtual and can be seen by an eye at Y. 14 Below are four statements about the uses of the different components of the electromagnetic spectrum. statement 1: Infra-red waves are used in television remote controllers. statement 2: Radio waves are used to transmit television pictures from satellite to Earth. statement 3: Ultraviolet waves are used for intruder alarms. statement 4: X-rays are used for security checks. Which statements are correct? A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4 15 A wire of length of 1.0 m and cross-sectional area of 2 mm2 has a resistance of 4.0 . This wire is replaced by another similar wire of length 2.0 m and cross-sectional area of 4 mm2. What is the resistance of the second wire? A 1.0  B 4.0  C 16  D 18 

8 Queenstown Secondary School [Turn over 16 The diagrams show the inside of a three-pin plug. Which one is correctly wired? E L N Brown Green and Yellow Blue A E L N Brown Green and Yellow Blue B E L N Brown Green and Yellow Blue C E L N Brown Green and Yellow Blue D 17 Four plotting compasses are placed in the magnetic field of two identical bar magnets as shown in the diagram. Which compass is shown pointing in the wrong direction? 18 Which material is commonly used as a lining for a box for storing radioactive samples? A aluminium B copper C lead D uranium A B C D

9 Queenstown Secondary School [Turn over 19 S is a radioactive source emitting α-particles, β-particles, and γ-rays. A detector is placed 5 cm away from S. A thin sheet of paper is placed as shown in the diagram. Which radiations can be detected? A α-particles and β-particles only C β-particles and γ-rays only B α-particles and γ-rays only D α-particles, β-particles, and γ-rays 20 The graph shows the decay curve for a particular radioactive nuclide. What is the half-life of this nuclide? A 1.0 day B 1.5 days C 2.0 days D 2.5 days count rate / counts per minute time / days

10 Queenstown Secondary School [Turn over 21 The diagram shows a plant cell. Which labelled structure produces carbon dioxide?