There are a great many different sources of fuel depending on the thing being fueled. Cars are fueled by gasoline which comes from oil.
Acquiring fuels from abroad can pose a national security risk.
Acquiring fuels from abroad can pose a national security risk.
Friction, and burning fuel.
natural gas
Common sources of heat that can ignite fuel include open flames, sparks, electrical equipment, hot surfaces, and friction. These heat sources can ignite fuel vapors or liquids, leading to fires or explosions. It is important to handle fuels safely and keep them away from potential ignition sources.
They are called renewables. (though strictly, nuclear power is not a fossil fuel and is not renewable).They are called alternative energy sources.
Natural uranium
oil and natrual gas
because fossil fuel is a finite resource.
There are several sources of non-fuel burning sources of energy:Wind power turbinesHydro electricitySolar powerGeothermal powerTidal powerHuman and animal power
Natural gas has long been considered an alternative fuel source to that of conventional petroleum fuel sources.
Ships can use a variety of energy sources, including diesel fuel, heavy fuel oil, liquefied natural gas (LNG), and electricity from onboard generators. Some ships also use alternative energy sources such as wind or solar power to supplement their traditional fuel sources.