Skip to content

Course home

Sign up

2.3 Transfer of thermal energy

EasyMediumHard
12345678910111213141516171819202122232425262728293031323334353637383940414243444546
Question 23

A student is investigating the effect of extra layers of insulation on the rate of cooling of hot water in a glass beaker. The student is investigating how the number of layers of bubble wrap wrapped around the beaker affects its rate of cooling.

Plan an experiment to investigate the effect of the number of layers of bubble wrap wrapped around a glass beaker on the rate of cooling of hot water.

The following apparatus is available:

  • a glass beaker
  • a roll of bubble wrap
  • scissors
  • rubber bands or adhesive tape
  • a thermometer
  • a stopwatch
  • a measuring cylinder
  • a supply of hot water.

You can also use other apparatus and materials that are usually available in a school laboratory.

You are not required to carry out this investigation.

In your plan, you should:

  • explain briefly how you would carry out the investigation, including how you would vary the independent variable
  • state the key variables that you would control
  • draw a table, or tables, with column headings, to show how you would display your readings (you are not required to enter any readings in the table)
  • explain how you would use your readings to reach a conclusion.

You may draw a diagram if it helps your explanation.

[7]
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