Year 9 physicists conducted an experiment on Wednesday morning to find out which type of surface is the best emitter of thermal radiation.
Working in teams of four, the boys poured equal amounts of boiling water into conical flasks of the same size which had been painted different colours.
They then started to take temperature readings from the same initial temperature every minute for 20 minutes.
The boys then collected each others results and drew a graph for each flask on the same sheet of graph paper.
The black flask had the biggest fall in temperature which meant that it was the best emitter of thermal radiation and so lost its heat quickly.
The silver flask had the smallest fall in temperature which meant it was the worst emitter of thermal radiation.