Physics · May / June 2020 · Paper 61 · Question 4

A student investigates the effect of the colour of the surface of a metal container on the rate of loss of heat from the container. She knows that black surfaces are better radiators of thermal energy than white surfaces and wants to investigate the effect of other colours. The following apparatus is available: metal containers each with the outer surface painted a different colour a thermometer a stop-watch a supply of hot water. She can also use other apparatus and materials that are usually available in a school laboratory. Plan an experiment to investigate the effect of the colour of the surface of a metal container on the rate of loss of heat from the container. You should: • draw a diagram of the apparatus used • explain briefly how you would carry out the investigation • state the key variables to be kept constant • draw a table, or tables, with column headings, to show how you would display your readings (y not required to enter any readings in the table) • explain how you would use your readings to reach a conclusion.

Read automatically from the paper; the printed page above is exact.