Across
- 4. What energy source is involved with digging wells?
- 5. Where is oil from the ground separated into fuels?
- 6. When a source cannot be replenished what is it called?
- 8. What was the original source of the energy in wind and flowing water?
- 12. Is the percentage of energy you use conservation or efficiency?
- 14. Compunds that are made from oil are called?
- 15. What is something that provides energy?
- 17. Fill in the blank _____ fission
- 19. Heat from earth's interior.
- 21. Is saving energy conservation or efficiency?
- 22. A compound that has carbon and hydrogen atoms are called?
- 23. Wood, plant parts, manure, and food wasted that can be used as fuels is called?
- 25. What type of lightbulb uses less energy than others?
- 26. When fuel rods generate a lot of heat which makes it melt is called
Down
- 1. Is nuclear fission when cells separate or combine?
- 2. Light and heat given off by the sun is called?
- 3. What fuel is not as commonly used as it used to?
- 7. The biggest use of coal in the U.S. is?
- 9. What percentage of the coal mined in the U.S. is exported to other countries?
- 10. energy Turning fans on and off, shorter hot showers, and turning lights off helps what?
- 11. Energy produced by flowing water is called?
- 13. Coal,oil,and natural gas are the three major types or what?
- 16. transportation and electricity are one of the needs for what?
- 18. What is oil mainly used for?
- 20. A layer of material that traps heat.
- 24. What energy conversions occur when a car engine burns gasoline