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RAD MIDTERM 1 TCDHA
CORRECTLY ANSWERED QUESTIONS GRADED
A form of energy carried by waves or streams of particles is defined as... - ANSWER✔✔Radiation The x-ray was discovered by... - ANSWER✔✔Wilhelm Roentgen Who MODIFIED the paralleling technique with the introduction of the long-cone technique? - ANSWER✔✔F. Gordon Fitzgerald Which of the following would you place in the patient's mouth in order to take dental x- rays?
a) Image
b) Image Receptor
c) Radiograph
d) Dental radiograph - ANSWER✔✔b. Image Receptor
Which subatomic particle carries a negative electrical charge?
a) A Neutron
b) A Proton
c) An Electron
d) A Nucleon - ANSWER✔✔c. An Electron 1 / 2
What is the binding energy or binding force of an electron is... - ANSWER✔✔ Determined by the distance between the orbiting electrons and the nucleus A spontaneous emission of radiation from the disintegration of unstable atomic nuclei is... - ANSWER✔✔Radioactivity Cathode rays are derived from which of the following types of particulate radiation?
- Electrons
- Alpha Particles
- Protons
- alpha particle decay - ANSWER✔✔a. Electrons
- / 2
What type of radiation includes x-rays and visible light? - ANSWER✔✔Electromagnetic Approximately what percentage of the kinetic energy of the electrons is converted to x- rays at the anode? - ANSWER✔✔Less than 1% What restricts the size of the x-ray beam? - ANSWER✔✔The Lead Collimator Which form of the x-ray beam is more detrimental to the patient and operator? - ANSWER✔✔Scatter Radiation What happens with the electrons when the kilovoltage is increased? - ANSWER✔✔ The electrons moves from the CATHODE to the ANODE with more speed Higher-energy x-ray beam with increased penetrating ability results by... - ANSWER✔ ✔When the kilovolt is increased (1) Density is the overall darkness or blackness of a dental image. (2) When the kilovoltage is increased while other exposure factors remain constant, the resultant image exhibits a decreased density and appears lighter.
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