8 marksFoundation and Higher6.6.2.3 Properties of electromagnetic waves 26.6.2.4 Uses and applications of electromagnetic waves
AQA Trilogy 8464
Spec and skills
Paper scope: P2
Spec 6.6.2.3
Spec 6.6.2.4
Original practice question
Answer and supported method checks
Hospitals use X-rays to form images of the inside of the body. A CT scan uses X-rays from many directions. The table shows some typical radiation doses.
Typical radiation dose in millisieverts: one chest X-ray 0.02; one CT scan of the chest 7.0; background radiation in one year, UK average, 2.7.
Source of radiation
Typical dose in mSv
One chest X-ray
0.02
One CT scan of the chest
7.0
Background radiation in one year (UK average)
2.7
.1
Calculate how many chest X-rays give the same dose as one CT scan of the chest.
[2 marks]
.2
Calculate the dose from one CT scan of the chest as a percentage of the yearly background dose.
[2 marks]
.3
A patient has had a cough for several months. Evaluate the use of a CT scan of the chest to find the cause.
[3 marks]
.4
Give one harmful effect of ultraviolet radiation on the human body.
A tired driver is driving fast on a wet road at night.
Explain how each of these factors affects the stopping distance of the car.
[6 marks]
5 marksFoundation and Higher6.5.4.1.4 The distance–time relationship6.5.4.1.2 Speed
AQA Trilogy 8464
Spec and skills
Paper scope: P2
Spec 6.5.4.1.4
Spec 6.5.4.1.2
Original practice question
Answer and supported method checks
The graph shows how the distance travelled by a cyclist changes with time.
05101520253020406080100Time (s)Distance (m)
.1
Determine the speed of the cyclist during the first 10 s.
[2 marks]
.2
Describe the motion of the cyclist between 10 s and 20 s.
[1 mark]
.3
Calculate the average speed of the cyclist for the whole 30 s.
[2 marks]
7 marksFoundation and Higher6.6.1.2 Properties of waves6.6.1.1 Transverse and longitudinal waves
AQA Trilogy 8464
Spec and skills
Paper scope: P2
Spec 6.6.1.2
Spec 6.6.1.1
Original practice question
Answer and supported method checks
Waves travel across a pond. A floating leaf moves up and down 5 times in 2.0 s. The distance between neighbouring crests is 0.40 m.
.1
Calculate the frequency of the waves.
[1 mark]
.2
Calculate the speed of the waves.
[2 marks]
.3
Calculate the period of the waves.
[2 marks]
.4
The leaf moves up and down but does not travel across the pond with the waves.
Explain what this shows about the waves.
[2 marks]
6 marksFoundation and Higher6.7.2.1 Electromagnetism
AQA Trilogy 8464
Spec and skills
Paper scope: P2
Spec 6.7.2.1
Original practice question
Answer and supported method checks
A long, straight wire passes vertically through a horizontal card. The current in the wire flows upwards, out of the card towards you as you look down on it. Small plotting compasses are placed on the card around the wire.
.1
Seen from above, which way do the magnetic field lines go round the wire?
[1 mark]
.2
Describe the pattern of the magnetic field lines drawn on the card.
[2 marks]
.3
The current is reversed. Predict what happens to the compass needles.
[1 mark]
.4
The wire is then wound into a long coil (a solenoid). Describe the magnetic field of the solenoid.
