Question 1

What is the removal of an electron from an atom called?

Accepted Answer

A)  ionization 
B)  pair production 
C)  irradiation 
D)  electricity A

Question 2

In the United States,we are exposed to _____ mR/year of ionizing radiation from the natural environment.

Accepted Answer

A)  0-5 
B)  5-20 
C)  20-90 
D)  100-300 C

Question 3

Computed tomography was developed in the _____.

Accepted Answer

A)  1890s 
B)  1920s 
C)  1970s 
D)  1990s C

Question 4

Radio waves,light,and x-rays are all examples of _____ energy.

Accepted Answer

A)  nuclear 
B)  thermal 
C)  electrical 
D)  electromagnetic

Question 5

A moving object has _____ energy.

Accepted Answer

A)  potential 
B)  kinetic 
C)  nuclear 
D)  electromagnetic

Question 6

The biggest source of man-made ionizing radiation exposure to the public is _____.

Accepted Answer

A)  atomic fallout 
B)  diagnostic x-rays 
C)  smoke detectors 
D)  nuclear power plants

Question 7

The energy of x-rays is _____.

Accepted Answer

A)  thermal 
B)  potential 
C)  kinetic 
D)  electromagnetic

Question 8

The formula E=mc² is the basis for the theory that led to the development of _____.

Accepted Answer

A)  x-rays 
B)  electromagnetic radiation 
C)  nuclear power 
D)  cathode ray tubes

Question 9

An example of a derived quantity in mechanical physics is a _____.

Accepted Answer

A)  meter 
B)  second 
C)  dose 
D)  volume

Question 10

Today,radiology is considered to be a(n)_____ occupation.

Accepted Answer

A)  safe 
B)  unsafe 
C)  dangerous 
D)  high-risk

Question 11

Ionizing radiation is capable of removing _____ from atoms as it passes through the matter.

Accepted Answer

A)  neutrons 
B)  protons 
C)  electrons 
D)  ions

Question 12

Energy is measured in _____.

Accepted Answer

A)  kilograms 
B)  joules 
C)  electron volts 
D)  B or C

Question 13

Matter is measured in _____.

Accepted Answer

A)  kilograms 
B)  joules 
C)  electron volts 
D)  rems

Question 14

Ice and steam are examples of two forms of _____.

Accepted Answer

A)  matter 
B)  radiation 
C)  energy 
D)  work

Question 15

Exposure is measured in units of _____.

Accepted Answer

A)  becquerel 
B)  sieverts 
C)  meters 
D)  grays

Question 16

What does ALARA mean?

Accepted Answer

A)  All Level Alert Radiation Accident 
B)  As Low As Reasonably Achievable 
C)  Always Leave A Restricted Area 
D)  As Low As Regulations Allow

Question 17

_____ is a special quantity of radiologic science.

Accepted Answer

A)  Mass 
B)  Velocity 
C)  Radioactivity 
D)  Momentum

Question 18

Atoms and molecules are the fundamental building blocks of _____.

Accepted Answer

A)  energy 
B)  radiation 
C)  matter 
D)  gravity

Question 19

The basic quantities measured in mechanics are _____,_____,and _____.

Accepted Answer

A)  volume, length, meters 
B)  mass, length, time 
C)  radioactivity, dose, exposure 
D)  meters, kilos, seconds

Question 20

Filtration is used to _____.

Accepted Answer

A)  absorb low-energy x-rays 
B)  remove high-energy x-rays 
C)  restrict the useful beam to the body part imaged 
D)  fabricate gonadal shields

Exam 1: Essential Concepts of Radiologic Science