Across
- 2. energy, the process by which wind is used to generate electricity.
- 4. energy generated or produced by living or once-living organisms.
- 7. formed from the remains of ancient marine organisms, such as plants, algae, and bacteria.
- 8. a machine that transforms mechanical energy into electricity.
- 10. a combustible black or brownish-black sedimentary rock built mostly carbon.
- 13. energy, energy that is generated from natural processes that are continuously replenished.
- 15. the highest level of coal. It is a hard, brittle glossy black coal.
- 16. energy, heat within the earth.
- 17. sometimes referred to as brown coal It is the lowest grade coal with the lowest carbon content.
- 19. energy, the use of nuclear reactions to produce electricity
- 20. has a high heating value and is the most used kind of coal utilized in the production of power.
Down
- 1. a device that converts the kinetic energy of fluid into rotational motion of the device itself.
- 3. fuels, the remains of plants and animals that died millions of years ago.
- 5. energy, a form of energy that harnesses the power of water in motion
- 6. energy, an energy that comes from sources that not be replenished in our lifetime.
- 9. the flow of electrical power or charge.
- 11. a kind of energy that is both dynamic and transportable and may be transformed into usable forms.
- 12. a barrier that stops or restricts the flow of surface water or underground streams.
- 14. plant, an industrial facility that generates electricity from primary energy.
- 18. gas, a naturally occurring hydrocarbon gas combination including methane.