Across
- 3. Burning
- 5. Oil heated and separated into fuels and others
- 7. A compound that contains carbon and hydrogen atoms
- 9. Combining
- 11. Breaking apart
- 13. The reactor contains rods of U-235
- 15. Reducing energy usage
- 18. Combusting excess air
- 19. Waste is heated with limited oxygen to create carbon monoxide and hydrogen
- 22. Compounds made from oil
- 23. A lot or many
- 24. The sum of potential and kinetic energy
- 25. A fossil fuel mostly used for electric power
- 28. Cannot be replenished in a short time period
- 29. A fossil fuel mostly used for transportation
Down
- 1. A device that converts the wind's kinetic energy into electrical energy
- 2. The fuel rods produce too much heat that they started to melt
- 4. The central core of an atom that contains protons and neutrons
- 6. Layer of material that traps air to block the transfer of heat
- 8. Energy that travels by waves of particles
- 10. Produced by flowing water
- 12. Wood, plant parts, manure and food wastes that can be used as fuels
- 13. A substance that provides energy
- 14. Light and heat given off by the sun
- 16. the internal energy of an object due to kinetic energy
- 17. Percentage of energy
- 20. Can be replenished in a relatively short time period
- 21. A mixture of methane and other gases
- 26. Heat from the Earth's interior
- 27. Alcohol added onto gasoline