Across
- 2. recourses that can't be replaced in a relatively short time
- 4. gas that comes naturally from the ground
- 7. the percentage of energy that is used to preform work
- 10. part of the nuclear reactor where nuclear fission occurs
- 11. a machine with turbines used to produce energy
- 12. splitting of an atoms nucleus into two smaller nuclei
- 14. layer of material that traps air to help block the transfer of heat between the inside and outside of a building
- 16. reducing energy use
- 19. a substance that provides energy
- 20. breaking apart
- 21. chemical compounds that contain carbon and hydrogen
- 22. a factory in which crude oil is heated and separated into fuels and other products
- 27. this happens when the fuel rods start to melt
- 28. U-235 rods that the reactor contains
- 29. the combining of two atomic nuclei to produce one larger nucleus
Down
- 1. compounds made from oil
- 3. adding alcohol to gasoline
- 4. the central core of an atom that contains the protons and neutrons
- 5. energy from the sun
- 6. the intense heat from the earth's interior that warms the magma
- 8. coming together
- 9. electricity produced by flowing water
- 13. another name for oil
- 15. the energy-rich substances formed from the remains of organisms
- 17. energy conversion
- 18. made of cadmium, these are inserted between fuel rods
- 23. fuels made from living things
- 24. chemicals that are burned
- 25. recourses that can be replaced in a relatively short time
- 26. a solid fossil fuel