Nonrenewable: Can't make more
www.generationgenius.com/renewable-and-nonrenewable-energy-for-kids/
kids.kiddle.co/Non-renewable_resource
www.nationalgeographic.org/encyclopedia/nonrenewable-resources/
Biomass: Converting organic material
www.nrel.gov/research/re-biomass.html
www.ducksters.com/science/environment/biomass_energy.php
www.real-world-physics-problems.com/biomass-energy-for-kids.html
Solar: Collect the Sun
www.renewableenergyworld.com/solar/solar-energy-for-kids/#gref
kids.kiddle.co/Renewable_resource
www.ducksters.com/science/environment/solar_power.php
Wind: Moving Air
filecabinet5.eschoolview.com/733A041B-884A-4001-A0AA-0CC57C145DA2/WindPower.pdf
kids.britannica.com/kids/article/wind-power/574607
www.ducksters.com/science/environment/wind_power.php
Hydro-electric: Moving water
www.ducksters.com/science/environment/hydropower.php
kids.kiddle.co/Hydroelectricity
www.kidcyber.com.au/hydro-electric-power
kids.britannica.com/kids/article/waterpower/625245