Physics 5054 · O Level · Transfer of thermal energy
Transfer of thermal energy — practice question
A student carries out an investigation to determine whether cotton wool or bubble wrap is the better insulator. She is given the following apparatus: a $100\,\text{cm}^{3}$ glass beaker, a supply of hot water, a rectangular piece of cotton wool, a rectangular piece of bubble wrap, adhesive tape.
(a)[2]
State two additional pieces of apparatus required for the investigation.
(b(i))[3]
Describe in detail how the student carries out the investigation. State which measurements must be taken and explain how she determines which material is the better insulator.
(b(ii))[1]
Explain how the student ensures a fair comparison between the cotton wool and the bubble wrap.
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Thermometer” …