Across
- 3. fluorescent modern energy efficient light bulb
- 4. Powered by the wind
- 8. Energy use
- 9. cell Unit that converts sunlight to electrical energy
- 10. Carbon dioxide is a ___________ gas
- 11. Modern car
- 12. Heat from within Earth
- 13. What bio-fuel is made from
- 14. Potential energy of a spring
- 15. Layers of gases around a planet
- 18. Energy in the nucleus of an atom
Down
- 1. Ocean wave energy
- 2. Soft type of coal
- 5. Caused by uneven heating and cooling of planet
- 6. What solar cells are made of
- 7. River power
- 8. The ability to cause change
- 11. The average kinetic energy of particles
- 16. Our star
- 17. Several solar panels working together
- 19. small powerful light source