A SOURCE OF ENERGY is where humans get energy from Example: solar energy, wind energy, oil, etc
A renewable source is an energy source that will ALWAYS be used. It will never run out Example: solar energy is renewable because the sun will always be in the sky! Wind energy is renewable because there will always be wind!
A non-renewable source is a source that will NOT always be used. It will run out some day. Example: oil is a non-renewable source because it is made from plants/animals that died millions of years ago. So when humans use all the oil, there will be no more!
A fossil fuel is: oil, natural gas, coal Fossil fuels come from plants and animals that died MILLIONS of years ago. Humans get these fuels under the Earth. Fossil fuels
Renewable EnergyNon-renewable Energy Wind energyOil Solar energyCoal BiomassNatural gas Geothermal energyNuclear HydroelectricFossil fuels