FREE AND STUDY GAMES ABOUT GREEN BOOK C 2,3,6

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FREE AND STUDY GAMES ABOUT GREEN BOOK C 2,3,6

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

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-Guarantee passing score -36 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Radiation is the emission and propagation of energy through space or substance in the form of waves or particles.Radioactivity can be defined as the process which certain unstable atoms or elements undergo spontaneous disintegration, or decay

Answer:

Both statements are true.

Question 2: The lead collimator

Answer:

restricts the size of the x-ray beam.

Question 3: Which subatomic particle carries a negative electrical charge?

Answer:

An electron Question 4: Which of the following components of the x-ray machine would have two indicator lights?

Answer:

The control panel

Question 5: The spontaneous emission of radiation from the disintegration of unstable atomic nuclei is

Answer:

radioactivity.

Question 6: The binding energy or binding force of an electron is

Answer:

determined by the distance between the orbiting electrons and the nucleus.Question 7: Which of the following four possibilities that can occur when an x-ray photon interacts with matter is responsible for producing densities on a dental receptor that make dental radiography possible?

Answer:

Compton scatter

Question 8: Which of the following statements is true of ionizing radiation?

Answer:

It is radiation that is capable of producing ions by removing or adding an electron to an atom.Question 9: (1) X-ray photon production occurs as a result of both general and characteristic radiation. (2) General radiation accounts for a small number of x-ray photons produced because it takes high kV to dislodge the electrons from the K shell.

Answer:

The first statement is true; the second statement is false.

Question 10: Which property of x-rays allows for the image on the receptor?

Answer:

Penetrating power Question 11: Your x-ray machine runs off 110 volts. Theoretically what would occur if there was no step-down transformer in the x-ray control panel?

Answer:

Too many electrons would be produced for the purpose of dental x-rays. Only 3-5 volts are required to heat the tungsten filament.

Question 12: Within the x-ray tube, electrons are generated by the

Answer:

tungsten filament in the cathode.Question 13: Which of the following forms of electromagnetic radiation has the shortest wavelength?

Answer:

Dental x-ray wave Question 14: Interaction with the x-ray photon as a result of the photoelectric effect is harmful to the patient because ionization occurs.

Answer:

The statement is true.Question 15: In the dental x-ray tube, the number of electrons created is controlled by

Answer:

milliamperage.

Question 16: An ion pair results when

Answer:

an electron is removed from an atom.Question 17: Your patient had x-rays taken in her previous dental office. She notices that the long metal tube at the end of the x-ray head is longer than it was at the other office.

Answer:

It aims and shapes the x-ray beam.

Question 18: Photons are

Answer:

a component of the particle concept of electromagnetic radiation.Question 19: Which would you adjust if you wanted to produce characteristic radiation?

Answer:

Kilovoltage

Question 20: Electromagnetic radiations

Answer:

include x-rays and visible light.

Question 21: Which of the following elements is the simplest atom?

Answer:

Hydrogen (H #1)

Question 22: Which of the following statements is true of ionization?

Answer:

An atom that gains an electron has a negative charge, and an atom that loses an electron has a positive charge.Question 23: Which is the most common possibility when an x-ray photon interacts with matter?

Answer:

Compton scatter Question 24: Heat is a byproduct of x-ray production. Which component of the x-ray tubehead dissipates the heat created by the production of x-rays?

Answer:

Insulating oil

Question 25: The fundamental unit of matter is the

Answer:

atom.

Question 26: The nucleus of an atom contains

Answer:

protons and neutrons.Question 27: Which of the following statements is true of orbits or shells in the atom?

Answer:

The orbiting shell closest to the nucleus has the highest energy level.