Skip to content

Course home

Sign up

2.3 Transfer of thermal energy

EasyMediumHard
12345678910111213141516171819202122232425262728293031323334353637383940414243444546
Question 4

Two samples, A and B, of the same metal have the same mass but different shapes:

  • Sample A is a thin flat plate (large surface area).
  • Sample B is a solid sphere (small surface area).

Each sample is heated in an oven to 120∘C120^\circ\text{C}120∘C and then placed on a heat-resistant surface in a room at 20∘C20^\circ\text{C}20∘C to cool down to room temperature.

Which row in the table correctly compares the total thermal energy transferred to the surroundings and the initial rate of cooling for each sample?

RowTotal thermal energy transferredInitial rate of cooling
ASample A transfers more energy than BSample A cools down faster than B
BSample B transfers more energy than ASample B cools down faster than A
CBoth samples transfer the same energySample B cools down faster than A
DBoth samples transfer the same energySample A cools down faster than B
A

Row A

B

Row B

C

Row C

D

Row D

Markscheme

2.3 Transfer of thermal energy Questions

  1. IGCSE
  2. /Physics
  3. /2.3 Transfer of thermal energy

301 exam-style questions on CIE IGCSE Physics 2.3 Transfer of thermal energy, covering 2.3.1a Thermal conductors and thermal insulators, 2.3.1b Explaining thermal conduction, 2.3.2 Convection, 2.3.3a Thermal radiation, 2.3.3b Surface colour and texture, 2.3.3c Rate of emission and absorption of radiation, and 2.3.4 Consequences of thermal energy transfer. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank