Across
- 3. turns hydroelectric plant blades
- 6. fuel for combustion engines
- 7. reducing energy use
- 8. energy from flowing water
- 11. energy stored in an object's position
- 13. unit of electrical power
- 14. cannot be created or destroyed conservation of energy principle
- 16. energy from the sun
- 17. propels wind turbines
Down
- 1. releases energy in a reaction
- 2. main component of natural gas
- 4. stores energy in an electric car
- 5. rotating part of an electrical generator
- 7. flow of electrical power
- 8. engine converts thermal energy to mechanical
- 9. heat primary source of geothermal energy
- 10. Earth's internal heat as energy
- 11. opposite of kinetic energy
- 12. energy converted by solar panels
- 15. measure of energy effectiveness