Year 11 recently completed their final practical investigation as part of their Entry Level science examination. The students were asked to set up an experiment to measure the level of heat transfer from a hot mug.
We have been looking at the theory of how heat can transfer. Year 11 have seen how heat can change in three ways: convection, conduction and radiation. The students used this knowledge to set up an experiment to find out which material is best at retaining heat.
Our equipment included a white plastic mug, a white china mug, a black china mug and an enamel mug. Our method involved pouring 200ml of boiling water into each mug. The temperature was recorded every two minutes. This was then logged.
The students were asked to to predict which mug would lose the least amount of heat. They were asked to think about which material can absorb the heat the best.
Our results showed that the white china mug lost the least amount of heat. This is because the material is a good insulator. We found that the enamel mug lost the most amount of heat. Year 11 were able to conclude that metal is a good conductor and so it lets the heat out.
Line graphs were drawn in our science books to show the results.