How is energy transferred so that the Hercules can travel? How do communities face change? Objective In this 45-minute lesson, learners will be able to infer how energy is transferred in the boiler to help power the steamship. Background When heat, oxygen, and fuel are combined, a fire starts. This is a transfer from chemical energy (from the fuel) to heat energy (from the fire). This is important because the boiler room relies on fire to heat up water. With the help of the fire, water is transferred to steam. Preparation Print worksheets and review lesson slides. If performing demonstration, Duration: 60 Minutes.