A student investigates how the temperature of solid paraffin wax changes as it melts. The experimental setup is shown below:

Suggest one way of heating the solid paraffin wax without using electricity.
Practise Edexcel GCSE Physics Heating, specific heat and latent heat with exam-style questions for Foundation and Higher tier. 81 questions, matched to the Edexcel GCSE Physics (1PH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.