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]
6 marksHigher6.1.2.2 Efficiency6.1.2.1 Energy transfers in a system
AQA Trilogy 8464
Spec and skills
Paper scope: P1
Spec 6.1.2.2
Spec 6.1.2.1
Original practice question
Answer and supported method checks
Two lamps provide the same useful light power of 9.0 W. Lamp A takes 60 W electrically; lamp B takes 12 W. Both are used for 300 s.
.1
Calculate the efficiency of lamp B as a percentage.
[2 marks]
.2
Calculate how much less energy lamp B takes from the supply in 300 s.
[2 marks]
.3
Explain why the smaller input does not make lamp B dimmer in this comparison.
[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]
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 marksHigher6.4.1.3 The development of the model of the atom (common content with chemistry)
AQA Trilogy 8464
Spec and skills
Paper scope: P1
Spec 6.4.1.3
Original practice question
Answer and supported method checks
A simplified early atomic model placed electrons inside a spread-out positive charge. Later scattering evidence supported a small positive nucleus. Further work showed that electrons occupy particular energy levels and that nuclei contain neutrons.
Evaluate the claim that changing the atomic model shows that scientific models are useless.
