Energy Sources

6. the transducer device that turns light energy into electrical energy
7. ancient renewable thermal energy sourced from trees
8. the network of large wires, transformers, and power conditioning systems that supply electrical power to businesses and homes from the electrical power plant
10. the transducer device that turns rotational mechanical energy into electrical energy
15. renewable combustible fuel made from plants
18. the ordinary sources of thermal energy like coal and petroleum
20. renewable mechanical energy source from a body of water's waves
21. the original balance of carbon dioxide and oxygen in the pre-industrial era

1. renewable mechanical energy source that depends on rain
2. the transducer device that turns electrical energy into rotational mechanical energy
3. conventional thermal energy source that is drilled for and pumped
4. renewable electrical energy source that uses the light energy from the Sun
5. renewable mechanical energy source from air currents
9. renewable thermal energy source that comes from within the Earth's surface
11. any transducer device that turns a burning fuel-air mixture into thermal & rotational mechanical energy
12. any machine or device that changes one source of energy into another
13. the transducer device that turns water, steam, or wind flow into rotating mechanical energy
14. conventional thermal energy source that is mined and crushed
15. renewable thermal energy source that comes from energy stored in discarded materials
16. natural energy that does not have a limited supply
17. any industrial facility that generates electricity powered by thermal sources such as fossil fuel combustion & nuclear reaction heat, or, partially, renewable energy sources
19. renewable mechanical energy source from the changing tides