A Test 1_RADT_A161 Fundamentals

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McCrae
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291621
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A Test 1_RADT_A161 Fundamentals
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2014-12-15 22:56:57
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201303 RADT A161 Fundamentals
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A Test 1
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  1. what 3 are the base quantities of physics
    • mass,
    • length, 
    • time
  2. The nucleus contains particles called nucleons, of which there are what  two types: 

    protons
    neutrons
    Electrons
    protons and neutrons
  3. Cosmic rays and radon are classified as what types of radiation
    Natural environmental radiation
  4. Electromagnetic energy includes what types of disturbances in space?

    (1) Electric
    (2) Magnetic
    (3) Mechanical
    1 & 2
  5. Electromagnetic radiation varies in terms of its:
    (1) Wavelength
    (2) Frequency
    (3) Velocity (speed)
    •  


  6. How are anatomic structures that absorb x-ray photons described

     attenuated

     radiopaque
    radiopaque
  7. If wavelength increases, what happens to frequency?

    It increases.
    It decreases.



  8. when Energy radiates matter and removes an orbital electron from the interacted atom what occuring
    Ionizing radiation
  9. Ion pairs only occur when
    an orbital electron is separated from the atom during ionizing radiation.
  10. The law of conservation of matter explains that matter can neither be created nor destroyed but simply ________.
    transformed
  11. What differentiates x-rays from gamma rays?

    (1) Energy
    (2) Origin
    (3) Frequency
    2
  12. What form of natural environmental radiation accounts for the greatest source of human exposure to ionizing radiation?
    Radon
  13.  Table 2-2.JPGWhat is the maximum number of electrons in an N shell if it is the outermost shell of an atom?2n2
    8
  14. a maximum of ___ electrons can exist in the outermost shell of any atom
    8
  15. What kind of energy represents the strength of attachment between the orbiting electrons and the nucleus?
    Electron binding energies
  16. What occurs when atoms of various elements combine?



  17. What occurs when several molecules of the same composition combine?

    Element
    Compound
    Compound







  18. What standard system of units has been adopted by all countries and is used in all branches of science?



  19. What type of bonding occurs when an electron transfers from one atom to another?
    Ionic bonding
  20. Which electron shell is closest to the nucleus?

    K, L, M, N
    K
  21. Which fundamental particle has a neutral charge?

    electrons,
    neutrons, 
    protons
    neutrons
  22. _______ have no mass or charge as they travel ionizing air and penetrating matter
    Photons
  23. alpha particles have a _____ charge
     positive 
  24. beta particles have a______ charge
     negative
  25. ______is not a member of the electromagnetic spectrum?
    Beta rays
  26. Which of the following on the electromagnetic spectrum have the ability to ionize matter?
    (1) Infrared
    (2) Radiofrequencies
    (3) X-rays
    (4) Gamma rays
    3 and 4 only
  27. Which shell is furthest from the nucleus and has the least amount of binding energy?
    n
  28. Which term accounts for the number of waves that pass a set point in a set amount of time?
    Frequency
  29. Which type of atom presents with the same number of protons but a varying number of neutrons?
    Isotopes
  30. Which type of atomic bonding is described when two atoms are bonded together by shared electrons revolving around both atoms nucleus?

    Ionic bonding
    Covalent bonding
    Covalent bonding
  31. what are the two primary ways atoms bond together 
    • ionic bonding;
    • covalent bonding
  32. Which wave characteristic refers to the height of a wave?

    Amplitude

    Frequency
    Amplitude
  33. energy emitted and transferred through space  is defined as
    Radiation
  34. The orbital electron and the atom from which it was separated are called
    an ion pair
  35. Velocity is a measure of
    How fast something is going
  36.  Fig 2-6.JPG The atomic number of uranium is
    96
  37. Atom's are

    electrically neutral

    electrically positive
  38. X-ray's behave like particles and move as photons.  This is known as the
    wave-particle duality
  39. Attenuation is
    a reduction in the number of primary photons in the x-ray beam
  40. The smallest possible unit of electromagnetic energy is the
    photon
  41. Electric current is measured in _________.
  42. Electrical potential is measured in ________.
    volt

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