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PMT Education
GCSE Predicted Paper
COMBINED SCIENCE (based on AQA)
Physics Paper 2H
__________________________________________________
Time allowed: 1 hour 15 minutes
Materials
For this paper you must have: ● a protractor ● a ruler ● a scientific calculator ● the Physics Equations Sheet (enclosed).
Instructions
● Use black ink or black ball-point pen. ● Pencil should only be used for drawing. ● Fill in the boxes at the top of this page. ● Answer all questions in the spaces provided. ● If you need extra space for your answer(s), use the lined pages at the end of this book. Write the question number against your answer(s). ● Do all rough work in this book. Cross through any work you do not want to be marked. ● In all calculations, show clearly how you work out your answer.
Information
● The maximum mark for this paper is 70. ● The marks for the questions are shown in brackets. ● You are expected to use a calculator where appropriate. ● You are reminded of the need for good English and clear presentation in your answers.
For Examiner’s Use
Question (^) Mark
1 2 3 4 5 6 7
TOTAL
The cyclist travels a total distance of 5 km during their journey and ends up 4 km away from their starting point.
Explain the difference between distance and displacement, using the cyclist as an example.
[2 marks]
Calculate the instantaneous speed of the cyclist at t = 3 seconds.
Show clearly on the graph how you obtained your answer.
[3 marks]
Speed = __________ m/s
Identify one contact force acting on the cyclist while riding. Describe its affect on the cyclist’s motion.
[2 marks]
Turn over for the next question
Between 8 and 12 seconds, the cyclist is travelling at a constant velocity.
What is the resultant force acting on the cyclist during this time? Explain your reasoning.
[2 marks]
A ripple tank produces waves with a frequency of 5 Hz and a wavelength of 0.2 m.
Calculate the speed of the waves.
[2 marks]
Speed = __________ m/s
The waves have a period of 0.2 s.
Explain the relationship between the period and frequency of a wave.
[1 mark]
Water waves are an example of a transverse wave. Sound waves are longitudinal.
Explain the differences between transverse and longitudinal waves.
[2 marks]
Two sound waves have different amplitudes.
How would the student perceive the difference between these waves?
[1 mark]
Turn over for the next question
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A bungee cord consists of a single elastic segment with a spring constant of 120 N/m.
A person weighing 720 N jumps off a platform, stretching the bungee cord.
When the person reaches the lowest point of the jump, the bungee cord is stretched by 6 m.
Calculate the force exerted by the stretched bungee cord.
[1 marks]
Force = __________ N
What does your answer to 3.1 suggest about the resistive forces acting on the bungee cord.
[2 marks]
Calculate the elastic potential energy stored in the bungee cord when it is stretched by 6 m.
[2 marks]
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A group of students is investigating magnets and electromagnets.
Two north poles of magnets are brought close together.
What interaction should the students expect to see between the two north poles of the magnets?
[1 mark]
The students coil a wire to produce a solenoid.
The diagram below shows the solenoid and its field lines.
Using the field lines, label on the diagram which end of the solenoid is the north pole and which end is the south pole.
Describe the magnetic field inside the solenoid.
[1 mark]
N N
A student tries to pick up an aluminium paperclip using one of the magnets.
Suggest why the student is unsuccessful.
[1 mark]
[1 mark]
An iron core is added to the solenoid to produce an electromagnet.
Describe two ways to increase the strength of the magnetic field inside this electromagnet.
[2 marks]
A straight wire is placed in a magnetic field between two poles, as shown in the diagram.
When a current flows through the wire, it experiences a force due to the motor effect.
Explain why the wire experiences a force when placed in the magnetic field and describe how the direction of the force on the wire can be determined.
[4 marks]
Explain how the Leslie cube works and how it is used to demonstrate the emission of infrared radiation.
[3 marks]
1.__________________________________
2.__________________________________
State two variables a student should control when determining which surface of a Leslie cube emits infrared radiation at the greatest rate.
[2 marks]
Question 5 continues on the next page
When light travels from air into water, it slows down and bends towards the normal.
Explain why the light refracts as it passes from air into water.
[3 marks]
Turn over for the next question
The diagram below shows a high-speed train approaching a stationary cargo cart on the tracks.
The train is travelling at 60 m/s before colliding with the stationary cart.
The mass of the train is 20,000 kg, and the mass of the cart is 5,000 kg
After the collision, the train slows down to 55 m/s.
Using the principle of conservation of momentum, calculate the velocity of the cargo cart immediately after the collision.
[4 marks]
Velocity = ___________ m/s
Turn over for the next question
A student wants to investigate how the mass of a trolley affects its acceleration down a ramp.
Plan an investigation to determine how changing the mass of the trolley influences its acceleration.
[6 marks]
End of questions
