Nuclear Energy Choiceboard

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Across
  1. 1. A radioisotope used to find or track molecules in an organism.
  2. 5. A transuranic element, formed in a nuclear reactor by neutron capture
  3. 7. Causes protons and neutrons to be attracted to each other
  4. 9. High energy electro-magnetic radiation from the atomic nucleus, virtually identical to X-rays
  5. 12. Country that use the most nuclear energy. About 64.8% of energy is nuclear energy
  6. 13. A reaction that stimulates its own repetition, in particular where the neutrons originating from nuclear fission cause an ongoing series of fission reactions.
  7. 17. A particle emitted from an atom during radioactive decay. Beta particles are generally electrons (with negative charge) but may be positrons.
  8. 19. The smallest mass of fissile material that will support a self-sustaining chain reaction under specified conditions.
  9. 20. Nuclear disaster in 1986 in Ukraine
  10. 21. A device in which a nuclear fission chain reaction occurs under controlled conditions so that the heat yield can be harnessed or the neutron beams utilized.
  11. 23. An atom or molecule that is electrically-charged because of loss or gain of electrons
  12. 25. 2011 Japanese nuclear disaster triggered by a tsunami
  13. 27. A fuel based on carbon presumed to be originally from living matter, e.g. coal, oil, gas
  14. 28. A common type of light water reactor (LWR), where water is allowed to boil in the core thus generating steam directly in the reactor vessel.
  15. 29. An atomic form of an element having a particular number of neutrons.
Down
  1. 2. Used to detect nuclear particles as a visible path of droplets
  2. 3. A device that produces an electric current when radiation is present
  3. 4. The basic fuel of nuclear energy
  4. 6. The power of nuclear power plants The process whereby a neutron is shot into a larger nucleus causing it to split fragment into smaller nuclei neutrons and energy
  5. 8. Radiative gases in the Earth's atmosphere which absorb long-wave heat radiation from the Earth's surface and re-radiate it, thereby warming the Earth period required for half of the atoms of a particular radioactive isotope to decay and become an isotope of another element
  6. 10. A positively-charged particle emitted from the nucleus of an atom during radioactive decay. Alpha particles are helium nuclei, with 2 protons and 2 neutrons.
  7. 11. The process whereby two lighter nuclei combine under conditions of immense pressure and temperature to form a heavier nucleus and energy
  8. 14. The period required for half of the atoms of a particular radioactive isotope to decay and become an isotope of another element
  9. 15. 1979 nuclear incident in Pennsylvania
  10. 16. A radioactive decay product of uranium often found in uranium ore
  11. 18. The spontaneous decay of an unstable atomic nucleus, giving rise to the emission of radiation
  12. 19. Devices to absorb neutrons so that the chain reaction in a reactor core
  13. 22. Changing atoms of one element into those of another by neutron bombardment, causing neutron capture and/or fission
  14. 24. Uses tracks of bubbles to detect radiation
  15. 26. A particle of matter which cannot be broken up by chemical means