Depends, Some use Fossil fuels and some use electricity
Heat, from the friction in the brakes.
gas
Heat energy cause it stops and let's off all the heat it just gained from the train tracks.
Atkins Diet
train and aeroplane
Radios use eletrical energy
Depends on the train type. Steam trains and diesel trains use chemical energy stored in their fuel (coal or diesel) to create mechanical energy. Electrical trains use, well, electricity.
kinetic energy
Electrical energy.
potential energy
A steam train uses thermal energy generated by burning coal or wood to heat water in a boiler, producing steam. The steam is then used to drive a piston or turbine, converting the thermal energy into mechanical energy that propels the train forward.
chemical energy