Question

State the energy changes in the following while in use:

A steam engine.

Answer 1

Energy changes in a steam engine:

1. In a steam engine, the chemical energy of coal is first converted into heat energy of steam, now this steam is used to operate the engine.
2. So, there is the transformation of the energy from chemical energy to heat energy and then to mechanical energy.
3. Therefore, the energy changes in a steam engine are Chemical energy is converted into heat energy and then heat energy to mechanical energy.