Across
- 3. light emitting diode
- 6. a unit of electric power
- 10. the energy of moving electrons
- 12. produce energy
- 15. energy produced by the internal heat of the earth
- 17. term for energy made from clean, renewable resources
- 18. a natural material
- 19. a lighting source directly on a specific work area, an assignment
Down
- 1. one thousand units of electric power
- 2. an energy storage device
- 4. a supply of power
- 5. to prevent the waste or loss of energy
- 7. electro magnetic energy transmitted from the sun
- 8. organic matter which is available on a renewable basis
- 9. energy that comes form water in a vapor form
- 11. producing the least pollution
- 13. able to work well without wasting energy
- 14. machine to produce wind energy
- 16. power generated from running water