Across
- 3. a substance that provides energy such as heat, light, motion or electricity
- 6. another name for oil, from the Latin word Petra and oleum
- 8. a factory in which crude oil is heated and separated into fuels and other products
- 11. the warmth you feel on a sunny day or energy from the sun
- 15. what is the most used source for energy
- 16. a change from one form of energy to another
- 17. combining two atomic nuclei to produce a single larger nucleus
- 20. a resource that can be used again in a relatively short time
- 23. the part of the nuclear reactor where nuclear fission occurs
- 24. one of the three main fuels
- 25. a main renewable resource
- 26. energy made by the wind
- 28. energy rich substances formed from the remains of organisms
- 29. the reactor contains rod of u235
- 30. active cells that generate an electric current
Down
- 1. the central core of an atom that contains the protons and neutrons
- 2. a layer of material that traps air to help block the transfer of heat between the air inside and outside a building
- 4. the intense heat from earths interior that warms the magma
- 5. the splitting of an atoms nucleus into two smaller nuclei
- 7. chemical compounds that contain carbon and hydrogen atom
- 9. adding the alcohol to gasoline forms a mixture called this
- 10. electricity produced by flowing water
- 12. reducing energy use
- 13. compounds that are made from oil
- 14. wood belongs to a group called this this is made from living things
- 18. are used to slow down the chain reactions
- 19. a resource that is limited or takes too long to be used again
- 21. when fuel rods generate too much heat
- 22. when fuels contain stored chemical energy, and its released by this
- 27. percentage of energy used for work