Across
- 2. not a way of generating electricity, but a way of reducing need for additional energy consumption and saving money for the consumer.
- 6. Natural Gas is hard to ________ —flamed off at oil fields.
- 7. Pressure and heat over time transformed peat into _______.
- 9. Burning coal releases _____________.
- 11. energy only works during the day.
- 12. As water flows from higher level to lower level, it can be used to spin an electricity-generating _______.
- 13. Natural gas often forms on top of ________.
- 14. Continuously present as a feature of the environment.
- 16. Oil is more ___________ than coal, burns cleaner, and is easily transported through pipelines.
Down
- 1. primary energy source for nearly half world’s population.
- 3. 60% of oil pollution in oceans comes from “____________” operations.
- 4. __________ construction causes significant environmental and social damage.
- 5. 90% of world’s commercial energy supplied by ________ fuels.
- 8. Energy sources used faster than can be replenished.
- 10. ________ produces 40% of world’s geothermal electricity.
- 15. the world’s fastest growing energy source in the 1990s.