Kap. 19, Radiation and radioactivity

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82 Questions - Developed by: A - Developed on: - 954 taken

  • 1
    - radioactivity is a kind of transformation within the atomic nucleus
  • 2
    - radioactivity means that the atom is not stable
  • 3
    - radioactivity is associated with particle emissions (releases)
  • 4
    - radioactivity is not associated with production of dangerous radiation
  • 5
    - radioactivity is characterized e.g. by an activity of the sample
  • 6
    - radioactivity can be characterized by a half-life
  • 7
    - radioactivity can never be induced by falling radiation
  • 8
    - radioactivity is a type of chemical reaction
  • 9
    - half-life is not related to the sample activity
  • 10
    - half-life represents the averaged „life“ duration of unstable nuclei
  • 11
    - ionization is a decay of atomic nucleus
  • 12
    - ionization is an alteration of the number of electric charges within the atomic nucleus
  • 13
    - ionization is a change in number of atomic electrons
  • 14
    - spectrum of characteristic radiation (X rays) is continuous spectrum
  • 15
    - a brake radiation (bremsstrahlung) gives line spectrum
  • 16
    - spectrum of characteristic radiation (X rays) is line spectrum
  • 17
    - filtration of X-ray beams improves the quality of X-ray image
  • 18
    - anode electric currents (miliamperages) significantly affect the contrast of X-ray image
  • 19
    - higher voltages (kilo voltages) on X-ray tube increase the contrast of X-ray image
  • 20
    - scintillators employ transformation of the energy of X-rays (gamma rays) to the light
  • 21
    - scintillators employ transformation of the energy of X-rays (gamma rays) to radio waves
  • 22
    - scintillators employ transformation of the energy of X-rays (gamma rays) to microwaves
  • 23
    - marked molecules (containing radioactive isotopes) are used for evaluation of biological effects of radiation
  • 24
    - marked molecules (containing radioactive isotopes) are used for the calibration of
    dosimeters
  • 25
    -marked molecules (containing radioactive isotopes) are used for study of biological
    processes
  • 26
    - electrons in atomic covers (envelopes) are not primarily affected by beta particles
  • 27
    - electrons in atomic covers (envelopes) are not primarily affected by alpha particles
  • 28
    - electrons in atomic covers (envelopes) interact with gamma particles by photo effect
  • 29
    - electrons in atomic covers (envelopes) interact with gamma particles by Compton scatter
  • 30
    - gamma particles with high energy interact with atomic nuclei and produce the pairs of
    electron and positron
  • 31
    - electrons in atomic covers (envelopes) do not directly interact with fast moving
    neutrons
  • 32
    - ionization is not caused by streams of particles with sub-threshold energy
  • 33
    - ionization is not caused by streams of photons with supra-threshold (supraliminal)
    energy
  • 34
    - ionization is induced by streams of gamma particles
  • 35
    - ionization is induced by streams of X ray photons
  • 36
    - ionization is induced by streams of alpha particles
  • 37
    - ionization is not induced by streams of beta particles (electrons and positrons)
  • 38
    - ionization is induced by streams of neutrons
  • 39
    - ionization is induced by microwave radiation
  • 40
    - ionization is induced by infrared radiation
  • 41
    - ionization is not induced by „braking“ radiation (bremsstrahlung)
  • 42
    - Sv (sievert) is the unit of activity
  • 43
    - Sv (sievert) is the unit of dose
  • 44
    - Sv (sievert) is not the unit of dose
  • 45
    - Sv (sievert) is the unit of dose equivalent
  • 46
    - Sv (sievert) is the unit of the exposure
  • 47
    - biological effects of radiation are expressed most correctly as the activity
  • 48
    - biological effects of radiation are expressed most correctly as the dose
  • 49
    - biological effects of radiation are expressed most correctly as the dose equivalent
  • 50
    - biological effects of radiation are expressed most correctly as the ionization
  • 51
    - Gy (Gray) is the unit of dose
  • 52
    - C.kg-1 is the unit of dose
  • 53
    - C.kg is the unit of exposure (irradiation)
  • 54
    - the type of cell damage caused by radiation does not depend on the type of radiation
  • 55
    - a cell damage caused by radiation does not depend on an energy of radiation particles
  • 56
    - to make a damage of cells in the tissue the ionization is indispensable
  • 57
    - high permeability radiations induce larger damage in irradiated atoms and molecules
    than radiations with low permeability
  • 58
    - radiations with higher total energy always cause larger damage in the material than
    radiations with lower total energy
  • 59
    - the order of dangerousness of radiation for living structures at identical dose of
    irradiation is: alpha, beta, neutrons
  • 60
    - the order of dangerousness of radiation for living structures at identical dose of
    irradiation is: neutrons, beta, X-rays
  • 61
    - the order of dangerousness of radiation for living structures at identical dose of irradiation is: alpha, neutrons, gamma
  • 62
    - the order of tissue sensitivity to ionizing radiation (larger damage at the same dose) is:
    bone marrow, thyroid gland, muscle
  • 63
    - the order of tissue sensitivity to ionizing radiation (larger damage at the same dose) is:
    thyroid gland, gonads, muscle
  • 64
    - alpha radiation has low permeability (short penetration) in materials
  • 65
    - braking rays (bremsstrahlung) have low permeability (short penetration) in materials
  • 66
    - X-ray has high permeability (deep penetration) in materials
  • 67
    - neutron radiations have low permeability (short penetration) in materials
  • 68
    - dose equivalent does not depend on a dose of irradiation
  • 69
    - dose equivalent depends on the type of radiation
  • 70
    - dose equivalent depends on the type of irradiated tissues
  • 71
    - water absorbs X-rays more than air
  • 72
    - air absorbs X-rays more than water
  • 73
    - water absorbs X-rays more than bones
  • 74
    - bones absorb X-rays more than water
  • 75
    - blood absorbs X-rays more than bones
  • 76
    - attenuation's of X-rays penetrating materials do not depend on the layer thicknesses
  • 77
    - attenuation's of X-rays penetrating materials depend on the layer thicknesses
  • 78
    - attenuation's of X-rays penetrating materials do not depend on the energy of X-rays
  • 79
    - attenuation's of X-rays penetrating materials depend on the energy of X-rays
  • 80
    - attenuation's of X-rays penetrating materials do not depend on these materials
  • 81
    - attenuation's of X-rays penetrating materials do not depend on the temperature
  • 82
    - attenuation's of X-rays penetrating materials depend on the temperature

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