Across
- 2. A reaction when lighter nuclei are forced together to produce heavier nuclei.
- 6. A cylindrical device inserted between the fuel rods in a nuclear reactor to absorb excess neutrons and slow or stop the fission reaction.
- 9. An energy source that is bought and sold.
- 10. An activity that does not change atmospheric CO2 concentrations.
- 11. The use of a fuel to generate electricity and produce heat. Also known as combined heat and power.
- 12. Finding and implementing ways to use less energy.
- 13. Fuel derived from radioactive materials that give off energy.
- 15. Electricity generated by the kinetic energy of moving water.
- 16. Fuel derived from radioactive materials that give off energy.
- 20. A power plant that uses both exhaust gasses and steam turbines to generate electricity.
- 22. A network of interconnected transmission lines that joins power plants together and links them with end users of electricity.
- 26. The fraction of time a power plant operates in a year.
- 27. An energy source gathered by individuals for their own immediate needs.
- 29. Liquid petroleum removed from the ground.
- 34. In energy management, an energy source that is either potentially renewable or nondepletable.
- 36. energy resource An energy source with a finite supply, primarily the fossil fuels and nuclear fuels.
- 37. A device with blades that can be turned by water, wind, steam, or exhaust gas from combustion that turns a generator in an electricity-producing plant.
- 41. A vehicle that runs on either gasoline or a gasoline/ethanol mixture.
- 43. Carbon in fossil fuels.
- 44. Hydroelectricity generation in which water is retained behind a low dam or no dam.
- 45. A fossil fuel that occurs in underground deposits, composed of a liquid mixture of hydrocarbons, water, and sulfur.
- 46. Construction designed to take advantage of solar radiation without active technology.
- 47. An energy source that can be regenerated indefinitely as long as it is not overharvested.
- 48. A fuel derived from biological material that became fossilized millions of years ago.
- 49. A property of a building material that allows it to maintain heat or cold.
Down
- 1. Something that can move and deliver energy in a convenient, usable form to end users.
- 3. The process of converting solid coal into liquid fuel.
- 4. An efficient, self-regulating electricity distribution network that accepts any source of electricity and distributes it automatically to end users.
- 5. The energy use per unit of gross domestic product.
- 7. An energy source with a finite supply, primarily the fossil fuels and nuclear fuels.
- 8. Unit that measures the rate at which a sample of radioactive material decays; 1 Bq = decay of 1 atom or nucleus per second.
- 14. A nuclear reaction in which a neutron strikes a relatively large atomic nucleus, which then splits into two or more parts, releasing additional neutrons and energy in the form of heat.
- 17. A solid fuel formed primarily from the remains of trees, ferns, and other plant materials preserved 280 million to 360 million years ago.
- 18. The process of removing more than is replaced by growth, typically used when referring to carbon.
- 19. A diesel substitute produced by extracting and chemically altering oil from plants.
- 21. A unit of measure for radiation; 1 curie = 37 billion decays per second.
- 23. Carbon in biomass that was recently in the atmosphere.
- 24. The storage of water in a reservoir behind a dam.
- 25. In reference to an electricity-generating plant, the maximum electrical output.
- 28. Nuclear fuel that can no longer produce enough heat to be useful in a power plant but continues to emit radioactivity.
- 30. Liquid fuel created from processed or refined biomass.
- 31. A cylindrical tube that encloses nuclear fuel within a nuclear reactor.
- 32. A billing system used by some electric companies in which customers pay higher rates as their use goes up.
- 33. Energy that comes from the movement of water driven by the gravitational pull of the Moon.
- 35. A degraded petroleum that forms when petroleum migrates to the surface of Earth and is modified by bacteria.
- 38. A fuel derived from biological material that became fossilized millions of years ago.
- 39. Slow-flowing, viscous deposits of bitumen mixed with sand, water, and clay.
- 40. Alcohol made by converting starches and sugars from plant material into alcohol and CO2.
- 42. An energy source that cannot be used up.
- 46. The greatest quantity of energy used at any one time.