Across
- 4. Heating, transportation, and ___ meet the three needs for fuel
- 6. 10% of today's energy
- 8. Made from fuels and petroleum
- 14. Energy conversion occur when a car burns gasoline
- 16. What is most coal used for?
- 17. What turns turbines
- 19. ___ nuclei combine to create helium nuclei
- 20. Recycling, biking, and ___ are ways to conserve energy at home
- 22. Heat from earth's interior
- 23. A natural gas that will power most transportation
- 24. Light and heat given off by the sun
- 26. Conserving energy
- 27. Insulation traps ___ inside
Down
- 1. Reduces amount of energy we use
- 2. Have hydrogen and carbon in it
- 3. Biomass pollutes the ___
- 5. What is the most predictable energy type?
- 7. Uranium fuel undergoes nuclear fission producing heat
- 9. Power produced by flowing water
- 10. Most planes, trains, and ___ are fueled by oil
- 11. Energy that can't fuel transportation
- 12. Can be made in a shorter amount of time
- 13. Cannot be remade in a short amount of time
- 15. Material that traps air in between walls
- 18. Mainly used for transportation
- 21. Adding alcohol to gasoline
- 25. Where oil is heated