No,steam is not a fossil fuel
Electricity itself is not a fossil fuel but, can be generated by steam turbines and generators where the steam has been generated by heating water in fossil fuel boilers.
To convert the heat of combustion to steam which can be used in an engine.
fossil fuels contain coal, if you burn coal it produce's steam,then the steam turn's the turbine in a generator to produce electricity.That's the cost of fossil fuels ,that they can produce electricity.
Power plants, steam locomotives, and some homes.
A fossil fuel or wood. This is burnt to make heat and the heat boils water to make steam. The steam pressure is used to push things.However the original source of energy was the heat of the Sun (stored in the fossil fuel or wood).
Nothing, a steam boat runs not on steam, but on a heat source GENERATING steam. this heat source is usually coal but could be wood or a fossil fuel.
Fossil fuel is ignited, the heat boils water, the expansion of the water as steam drives a turbine, the turbine drives an electric generator.
The heat from coal turns water into steam. It is the steam that turns generator turbine blades to create electricity.
The fuel can be fossil fuel, ie coal oil,or natural gas, or it can be uranium in nuclear plants.
Coal is burnt to boil water into steam steam is then used to drive turbines that are connected to generators that make electricity
They both use steam turbine/generators