Physics 5054 · O Level · Transfer of thermal energy
Transfer of thermal energy — practice question
A student examines how three different insulating materials affect the cooling of hot water in a beaker. The apparatus available is: thermometer; stopwatch; 250 cm$^3$ glass beaker; 250 cm$^3$ measuring cylinder; cardboard; cotton wool; cloth; boss, clamp and stand. Hot water is also supplied. Write a plan for the experiment.
(a)[2]
Explain how to perform the experiment; a diagram is not necessary, although you may add one if it helps to make your plan clearer.
(b)[1]
State any quantities that should stay constant.
(c)[1]
Draw a table, complete with headings, to present the results.
(d)[1]
Explain how the readings may be used to reach a conclusion.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Monitor the temperature of the hot water as it cools (or after a fixed time / for a fixed temperature drop)” …