6 marksFoundation and Higher6.4.2.4 Radioactive contamination
AQA Trilogy 8464
Spec and skills
Paper scope: P1
Spec 6.4.2.4
Original practice question
Answer and supported method checks
A worker is near a sealed radioactive source for a short time. Another worker has radioactive dust on a glove. A supervisor recommends tongs, shielding and careful removal of the contaminated glove.
Explain the different hazards and how the precautions reduce them.
[6 marks]
5 marksFoundation and HigherRequired practical 146.1.1.3 Energy changes in systems
AQA Trilogy 8464
Spec and skills
Paper scope: P1
Spec 6.1.1.3
Original practice question
Answer and supported method checks
In a specific heat capacity investigation, a 0.60 kg block receives 7200 J from a heater. Its temperature rises from 18 °C to 38 °C. A second run with the same block and input energy gives a rise of only 16 °C.
.1
Calculate the specific heat capacity using the first run.
[3 marks]
.2
The student claims that the second run proves the metal has changed. Evaluate the claim and describe one check on the temperature measurement.
[2 marks]
4 marksHigher6.3.2.3 Changes of state and specific latent heat
AQA Trilogy 8464
Spec and skills
Paper scope: P1
Spec 6.3.2.3
Original practice question
Answer and supported method checks
A heater supplies 12000 J to 0.10 kg of ice already at 0 °C. The specific latent heat of fusion is 334000 J/kg. Assume no energy reaches the surroundings.
.1
Calculate the mass of ice that melts.
[2 marks]
.2
Evaluate the statement that the final temperature must be above 0 °C because energy was supplied.
[2 marks]
5 marksFoundation and HigherRequired practical 156.2.1.3 Current, resistance and potential difference
AQA Trilogy 8464
Spec and skills
Paper scope: P1
Spec 6.2.1.3
Original practice question
Answer and supported method checks
A student measures the resistance of 0.20 m, 0.40 m and 0.60 m of one uniform wire. Values are 1.6 Ω, 3.2 Ω and 5.6 Ω. The 0.60 m measurement is made after current has flowed for several minutes.
.1
Use the first two results to calculate the expected resistance of 0.60 m of wire at the original temperature.
[2 marks]
.2
Evaluate the final result and suggest how to improve the investigation.
[3 marks]
4 marksFoundation and Higher6.2.3.1 Direct and alternating potential difference
AQA Trilogy 8464
Spec and skills
Paper scope: P1
Spec 6.2.3.1
Original practice question
Answer and supported method checks
A mains supply completes 150 full cycles in 3.0 s. A battery supply maintains its positive and negative terminals. Both supplies are connected separately to suitable lamps.
.1
Calculate the mains frequency.
[2 marks]
.2
Explain why both can transfer energy to a lamp even though the charge moves differently.
