Across
- 2. three types of fossil fuels are natural gas, oil and
- 4. isn't usually used as a fossil fuel
- 6. three examples of petrochemicals are cosmetics, paint, and
- 10. wood, plant parts, manure, and food wasted that can be used as fossil fuels
- 12. it is made from another substance since it isn't on earth it must be man maid
- 14. oil is mainly used for
- 16. blades shafts gears a generator and a cable these parts work together to convert the winds energy into
- 17. as water moves through tunnels it turns turbines which are connected to a
- 19. Heat from earth's interior
- 23. A factory in which crude oil heated and separated into fossil fuels and other products
- 24. cannot be replenished in a short amount of time
- 25. the percent of coal used in the USA is
- 27. replenishes in a relatively short amount of time
Down
- 1. a mixture of gasoline and alcohol
- 3. Hydrogen burns
- 4. A energy rich chemical compound that contains carbon and hydrogen atoms
- 5. Hydrogen creates no acid rain or
- 7. a material that blocks heat transfer between air and outside a building is called
- 8. A chemical made from oil
- 9. electricity produces using the energy of flowing water
- 11. solar energy comes from the
- 13. 61 percent of oil is used on electric power in the
- 15. the percent of oil used on industry in the USA
- 18. what is most of the coal used for
- 20. light and heat given off by the sun
- 21. what percentage of coal mined in the US is exported to other countries
- 22. solar energy is only collectable when it is
- 26. A substance that provides energy because of chemical change
- 28. air in motion