LRA 211 FINAL REVIEW QUESTIONS
AND ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT!!!
1. What is the significance of an in-depth study of atomic structure in the field
of radiographic imaging?
Answer: ✔✔ It helps to comprehend the mechanisms inside the x-ray
tube.
Explanation:
An understanding of atomic structure is crucial in radiography because it
provides insight into the behavior of electrons and x-rays at the atomic
level. In an x-ray tube, the interaction between electrons and the target
atoms (such as tungsten) produces x-rays. By studying atomic structure,
radiologic technologists can better understand x-ray production, photon
interactions with tissue, and how to optimize imaging quality while
minimizing radiation exposure.
2. What processes occur at the atomic scale within an x-ray tube?
Answer: ✔✔ Heat production.
Explanation:
At the atomic scale, the main process occurring within an x-ray tube is the
production of heat. When filament electrons strike the anode target, most
of their energy is converted into heat, and only a small fraction (about 1%) is
converted into x-ray photons. This heat is produced by the rapid
deceleration of electrons as they interact with the tungsten atoms in the
anode. Managing this heat is critical to the longevity and functionality of the
x-ray tube.
3. Which metaphor did Rutherford employ to explain his atomic model?
Answer: ✔✔ Comparable to a solar system.
, Explanation:
Rutherford's model of the atom, based on his famous gold foil experiment,
was described as being similar to a solar system. In this model, the nucleus
of the atom (containing protons and neutrons) is at the center, and the
electrons orbit the nucleus much like planets orbit the sun. While this model
was later modified by Bohr and others, it served as a foundational idea in the
development of atomic theory.
4. According to Bohr's atomic theory, what are the three main particles that
construct an atom?
Answer: ✔✔ Protons, neutrons, electrons.
Explanation:
According to Bohr's atomic theory, the atom is made up of three subatomic
particles:
o Protons (positively charged, found in the nucleus)
o Neutrons (neutral, also found in the nucleus)
o Electrons (negatively charged, orbiting the nucleus in discrete energy
levels or shells).
Bohr's model helped explain how electrons occupy fixed orbits around
the nucleus and how their energy states influence atomic behavior,
such as x-ray production when electrons transition between energy
levels.
What is the inherent electrical charge of a proton?
Positive
Which subatomic particle carries no electrical charge?
Neutron
AND ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT!!!
1. What is the significance of an in-depth study of atomic structure in the field
of radiographic imaging?
Answer: ✔✔ It helps to comprehend the mechanisms inside the x-ray
tube.
Explanation:
An understanding of atomic structure is crucial in radiography because it
provides insight into the behavior of electrons and x-rays at the atomic
level. In an x-ray tube, the interaction between electrons and the target
atoms (such as tungsten) produces x-rays. By studying atomic structure,
radiologic technologists can better understand x-ray production, photon
interactions with tissue, and how to optimize imaging quality while
minimizing radiation exposure.
2. What processes occur at the atomic scale within an x-ray tube?
Answer: ✔✔ Heat production.
Explanation:
At the atomic scale, the main process occurring within an x-ray tube is the
production of heat. When filament electrons strike the anode target, most
of their energy is converted into heat, and only a small fraction (about 1%) is
converted into x-ray photons. This heat is produced by the rapid
deceleration of electrons as they interact with the tungsten atoms in the
anode. Managing this heat is critical to the longevity and functionality of the
x-ray tube.
3. Which metaphor did Rutherford employ to explain his atomic model?
Answer: ✔✔ Comparable to a solar system.
, Explanation:
Rutherford's model of the atom, based on his famous gold foil experiment,
was described as being similar to a solar system. In this model, the nucleus
of the atom (containing protons and neutrons) is at the center, and the
electrons orbit the nucleus much like planets orbit the sun. While this model
was later modified by Bohr and others, it served as a foundational idea in the
development of atomic theory.
4. According to Bohr's atomic theory, what are the three main particles that
construct an atom?
Answer: ✔✔ Protons, neutrons, electrons.
Explanation:
According to Bohr's atomic theory, the atom is made up of three subatomic
particles:
o Protons (positively charged, found in the nucleus)
o Neutrons (neutral, also found in the nucleus)
o Electrons (negatively charged, orbiting the nucleus in discrete energy
levels or shells).
Bohr's model helped explain how electrons occupy fixed orbits around
the nucleus and how their energy states influence atomic behavior,
such as x-ray production when electrons transition between energy
levels.
What is the inherent electrical charge of a proton?
Positive
Which subatomic particle carries no electrical charge?
Neutron
