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- 1. Multiple ChoiceAny material that stops ionizing radiation.AbsorberAtomAlphaparticleCurie
- 2. Multiple ChoiceA positively charged particle (a Helium-4 nucleus) made up of two neutrons and two protons.AbsorberAlpha particleBackground RadiationBeta Particle
- 3. Multiple ChoiceA particle of matter indivisible by chemical meanas. It is the fundamental building block of elements.Atomic NumberAtomic WeightMoleculeAtom
- 4. Multiple ChoiceThe number assigned to each element on the basis of the number of protons found in the element's nucleus.Alpha ParticleAtomic WeightAtomic NumberAlpha Number
- 5. Multiple ChoiceApproximately the sum of the number of protons and neutrons found in the nucleus of an atom.Atomic Weight (Atomic Mass)Background RadiationAtomic NumberAlpha Mass
- 6. Multiple ChoiceThe radiation of man's natural environment originating primarily from the naturally radioactive elements of theearth and from the cosmic rays. The term may also mean radiation extraneous to an experiment.CowCurieBackground RadiationCurie Radiation
- 7. Multiple ChoiceAn electron of either positive charge or negative charge, which has been emitted by an atomic nucleus or neutron in the process of a transformation.Curie ParticlesBeta ParticlesAlpha ParticlesDaughter Particle
- 8. Multiple ChoiceRadiocative materical deposited or dispersed in materials or places where it is not wanted.COWCurieDaughterContamination
- 9. Multiple ChoiceA radioisotope generator system.DoseDecayCowCurie
- 10. Multiple ChoiceThe basic unit used to describe the intensity of radioactivity in a sample of material. One curie equals thirty-seven billion disintegrations per second, or approximately the radioactivity of one gram of radium.CurieDensityDoseAlpha Dose
- 11. Multiple ChoiceA nucleus formed by the radioactive decay of a different (parent) nuclide.SonFather ParticleDaughterMother Particle
- 12. Multiple ChoiceThe change of one radioactive nuclide into a different nuclide by the spontaneous emission of alpha, beta, or gamma rays, or by electron capture. The end product is a less energetic, more stable nucleus.DensityDecayElectromagnetismStrong Force
- 13. Multiple ChoiceThe removal of radioactive contaminants by cleaning and washing with chemicals.DecontaminationNoncontaminationRecontaminationUncontamination
- 14. Multiple ChoiceThat property of a substance which is expressed by the ratio of its mass to its volume.DoseDecaySonDensity
- 15. Multiple ChoiceA general term denoting the quantity of radiation or energy absorbed in a specific mass.CurieCowDensity
- 16. Multiple ChoiceRadiation consisting of electric and magnetic waves that travel at the speed of light. Examples: light, radio waves, gamma rays, x-rays.Electromagnetic RadiationElectric RadiationStrong ForceWeak Force
- 17. Multiple ChoiceA radioactive decay process in which an orbital electron is captured by and merges with the nucleus. The mass number is unchanged, but the atomic number is decreased by one.Electron CaptureElectron ReleaseElectron ContainedElectron Catch
- 18. Multiple ChoiceWashing solution (The solution that is introduced into the cow).EluantEluateElute
- 19. Multiple ChoiceThe washings obtained by elution (the solution that comes out of the cow).EluantEluateElute
- 20. Multiple ChoiceTo separate by washing (to milk).EluantEluateElute
- 21. Multiple ChoiceThe state of an atom or nucleus when it possesses more than its normal energy. The excess energy is usually released eventually as a gamma ray.Super StateExilerated StateExcited State
- 22. Multiple ChoiceThe splitting of a heavy nucleus into two roughly equal parts (which are nuclei of lighter elements), accompanied by the release of a relatively large amount of energy in the form of kinetic energy of the two parts and in the form of emission of neutrons and gamma rays.FisionFusionFissionFisson
- 23. Multiple ChoiceNuclei formed by the fission of heavy elements. They are of medium atomic weight and almost all are radioactive. Examples: strontium-90, cesium-137.Fision ProductFission ProductFussion ProductFusion Product
- 24. Multiple ChoiceA highly penetrating type of nuclear radiation, similar to x-radiation, except that it comes from within the nucleus of an atom, and, in general, has a shorter wavelength.Gamma WaveGamma RayHealth PhysicsAlpha Ray
- 25. Multiple ChoiceA Geiger-Müller detector and measuring instrument. It contains a gas-filled tube which discharges electrically when ionizing radiation passes through it and a device that records the events.Half-LifeGeiger counterGeiger Generator
- 26. Multiple ChoiceA cow-a system containing a parent-daughter set of radioisotopes in which the parent decays through a daughter to a stable isotope. The daughter is a different element from that of the parent, and, hence, can be separated from the parent by elution (milking).GeneratorGeigerCounter
- 27. Multiple ChoiceThe time in which half the atoms of a particular radioactive nuclide disintegrate. The half-life is a characteristic property of each radioactive isotope.Half-lifeIonIrradiateRadioisotope
- 28. Multiple ChoiceThat science devoted to recognition, evaluation, and control of all health hazards from ionizing radiation.Life PhysicsIon PhysicsHealth Physics
- 29. Multiple ChoiceRadioactivity that is created by bombarding a substance with neutrons in a reactor or with charged particles produced by particle accelerators.Ionized RadioactivityInduced RadioactivityReduced Radioactivity
- 30. Multiple ChoiceAn atomic particle that is electrically charged, either negative or positive.NeutronIon
- 31. Multiple ChoiceRadiation that is capable of producing ions either directly or indirectly.Ionizing RadiationInduced RadiationIrradiate Radiation
- 32. Multiple ChoiceTo expose to some form of radiation.IonizeIrradiateIsomer
- 33. Multiple ChoiceOne of several nuclides with the same number of neutrons and protons capable of existing for a measurable time in different nuclear energy states.IrradiateIsotopeIsomer
- 34. Multiple ChoiceA mode of radioactive decay where a nucleus goes from a higher to a lower energy state. The mass number and the atomic number are unchanged.Ionized TransitionIsotope TransitionIsometric Transition
- 35. Multiple ChoiceA given element that have the same atomic number (same number of protons in their nuclei) but different atomic weights (different number of neutrons in their nuclei). Uranium-238 and uranium-235 are isotopes of uranium.IonsIsotopesCurie
- 36. Multiple ChoiceThe capture by an atom's nucleus of an orbital electron from the first K-shell surrounding the nucleus.Isotope CaptureElectron CaptureK-capture
- 37. Multiple ChoiceOne thousand electron volts.keVMeVIoV
- 38. Multiple ChoiceOne million electron volts.keVMeVIoV
- 39. Multiple ChoiceOne millionth of a curie (3.7 x 104 disintegrations per second).MicrocurieMillicurieMinicurie
- 40. Multiple ChoiceTo elute a cow.MilkEluteAlute
- 41. Multiple ChoiceA trademark of Union Carbide Corporation that is used to identify radioisotope generator systems for educational use.MilligeneratorMicrogeneratorMinigenerator
- 42. Multiple ChoiceAn electrically neutral particle with negligible mass. It is produced in many nuclear reactions such as in beta decay.NeutronNucleonNeutrino
- 43. Multiple ChoiceOne of the basic particles which make up an atom. A neutron and a proton have about the same weight, but the neutron has no electrical charge.NeutronElectronProton
- 44. Multiple ChoiceA device in which a fission chain reaction can be initiated, maintained, and controlled. Its essential components are fissionable fuel, moderator, shielding, control rods, and coolant.Alpha ReactorNuclear ReactorBeta Reactor
- 45. Multiple ChoiceA constituent of the nucleus; that is, a proton or a neutron.ProtonNucleonElectron
- 46. Multiple ChoiceThe science, technology, and application of nuclear energy.NucleonicsProteonicsElectonics
- 47. Multiple ChoiceThe core of the atom, where most of its mass and all of its positive charge is concentrated. Except for hydrogen, it consists of protons and neutrons.NucleusElectron Cloud
- 48. Multiple ChoiceAny species of atom that exists for a measurable length of time. A nuclide can be distinguished by its atomic weight, atomic number, and energy state.ElectrideProtideNuclide
- 49. Multiple ChoiceA radionuclide that decays to another nuclide which may be either radioactive or stable.SonParentDaughter
- 50. Multiple ChoiceA quantity of electromagnetic energy. Photons have momentum but no mass or electrical charge.PhotonPhottonPotion
- 51. Multiple ChoiceOne of the basic particles which makes up an atom. The proton is found in the nucleus and has a positive electrical charge equivalent to the negative charge of an electron and a mass similar to that of a neutron: a hydrogen nucleus.NeutronElectronProton
- 52. Multiple ChoiceRadiation Absorbed Dose. The basic unit of an absorbed dose of ionizing radiation. One rad is equal to the absorption of 100 ergs of radiation energy per gram of matter.RadFadNad
- 53. Multiple ChoiceA technique for estimating the age of an object by measuring the amounts of various radioisotopes in it.Radioisotope DatingCarbon DatingRadioactive Dating
- 54. Multiple ChoiceMaterials which are radioactive and for which there is no further use.Radioisotope WasteRadioactive DatingNuclear Dating
- 55. Multiple ChoiceThe spontaneous decay of disintegration of an unstable atomic nucleus accompanied by the emission of radiation.NuclearactivityRadioactivity
- 56. Multiple ChoiceA radioactive isotope. A common term for a radionuclide.RadisotopeRadioisotopeRadiosotop
- 57. Multiple ChoiceA radioactive nuclide. An unstable isotope of an element that decays or disintegrates spontaneously, emitting radiation.RadionuclideNuclideNuclearide
- 58. Multiple ChoiceAn electronic instrument that indicates, on a meter, the number of radiation induced pulses per minute from radiation detectors such as a Geiger-Muller tube.Radio MeterRate MeterShield Meter
- 59. Multiple ChoiceAn electronic instrument for counting radiation induced pulses from radiation detectors such as a Geiger-Muller tube.ScalerShielderRater
- 60. Multiple ChoiceAn instrument that detects and measures gamma radiation by counting the light flashes (scintillations) induced by the radiation.Secular equilibriumShieldingScintillation counterCounter
- 61. Multiple ChoiceA state of parent-daughter equilibrium which is achieved when the half-life of the parent is much longer than the half-life of the daughter. In this case, if the two are not separated, the daughter will eventually be decaying at the same rate at which it is being produced. At this point, both parent and daughter will decay at the same rate until the parent is essentially exhausted.Scintillation counterSecular equilibriumNuclear Decay
- 62. Multiple ChoiceA protective barrier, usually a dense material, which reduces the passage of radiation from radioactive materials to the surroundings.ShieldingSourceStableSpill
- 63. Multiple ChoiceA radioactive material that produces radiation for experimental or industrial use.SourceSpillScalerShielding
- 64. Multiple ChoiceThe accidental release of radioactive materials.SpillStableSource
- 65. Multiple ChoiceNon-radioactive.StableSpillSource
- 66. Multiple ChoiceA small amount of radioactive isotope introduced into a system in order to follow the behavior of some component of that system.TracerTransmutationStable
- 67. Multiple ChoiceThe transformation of one element into another by a nuclear reaction.TransmutationStableSourceSpill
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