Across
- 2. The storage of water in a reservoir behind a dam.
- 7. Alcohol made by converting starches and sugars from plant material into alcohol and CO2.
- 9. Construction designed to take advantage of solar radiation without active technology.
- 12. The greatest quantity of energy used at any one time.
- 15. An activity that does not change atmospheric CO2 concentrations.
- 20. Hydroelectricity generation in which water is retained behind a low dam or no dam.
- 24. A diesel substitute produced by extracting and chemically altering oil from plants.
- 25. An energy source that can be regenerated indefinitely as long as it is not overharvested.
- 26. In energy management, an energy source that is either potentially renewable or nondepletable.
Down
- 1. A billing system used by some electric companies in which customers pay higher rates as their use goes up.
- 3. Energy captured from sunlight with intermediate technologies.
- 4. A turbine that converts wind energy into electricity.
- 5. The process of removing more than is replaced by growth, typically used when referring to carbon.
- 6. Energy that comes from the movement of water driven by the gravitational pull of the Moon.
- 8. Energy generated from the kinetic energy of moving air.
- 10. A technology that transfers heat from the ground to a building.
- 11. Liquid fuels created from processed or refined biomass.
- 13. The implementation of methods to use less energy.
- 14. Heat energy that comes from the natural radioactive decay of elements deep within Earth.
- 16. An energy source that cannot be used up.
- 17. The ability of a material to maintain its temperature.
- 18. Carbon in fossil fuels.
- 19. The application of an electric current to water molecules to split them into hydrogen and oxygen.
- 21. An energy source with a finite supply, primarily the fossil fuels and nuclear fuels.
- 22. An electrical-chemical device that converts fuel, such as hydrogen, into an electrical current.
- 23. Carbon in biomass that was recently in the atmosphere.