lukense Energy Crossword

1. Electric power is the main use of _______ in the United States.
4. Solar energy is the indirect ________ of wind and flowing water energy.
6. Hydrogen doesn't exist on Earth as a _____.
10. Energy that is remade in a short period of time.
11. _______ fuels are formed when organism remains are buried and changed by heat and pressure.
12. Chemical created from bio-mass.
13. ____________ light bulbs are more efficient than incandescent bulbs.
17. The largest use of oil in the United States.
18. The main use of hydrogen was _______ fuel.
21. Chemical compounds made of carbon and hydrogen.
22. The amount of calculated energy that is actually used.
23. Light and heat given off by the sun.
25. Each atom of hydrogen has one proton and ________ electron(s).
26. A layer of material which traps air.
27. Energy that is remade in a long period of time.
28. Two nuclei combining is nuclear ________.

1. Hydrogen is an energy _________.
2. Energy that comes from the force of moving water.
3. One nucleus splitting apart is nuclear _______.
5. People built dams to make artificial __________ to create power.
7. The three main fossil fuels are oil, coal, and gas.
8. Energy __________ is reducing energy use.
9. A _____ _______ occurs in a nuclear power plant when fuel rods overheat.
14. Heat from Earth's interior.
15. Compounds that are made from oil.
16. Wood, plant parts, manure, and food wastes that can be used as fuels.
19. A factory where fuels and oil products are made from crude oil.
20. In a nuclear power plant, nuclear fission occurs in the __________ vessel.
24. A mixture that forms when alcohol is added to gasoline.