Bushong: Radiologic Science for Technologists, 10th Edition

Chapter 01: Essential Concepts of Radiologic Science

Test Bank 

MULTIPLE CHOICE

	1.	Matter is measured in _____.
a.	kilograms	
b.	joules	
c.	electron volts	
d.	rems	

ANS:	A
Matter is measured in kilograms

DIF:	Easy	REF:	page 3	OBJ:	Recognize the unit of measurement for matter.

	2.	Energy is measured in _____.
a.	kilograms	
b.	joules	
c.	electron volts	
d.	B or C	

ANS:	D
Energy is measured in joules or electron volts

DIF:	Moderate	REF:	page 4	OBJ:	Recognize the unit of measurement for energy.

	3.	Atoms and molecules are the fundamental building blocks of _____.
a.	energy	
b.	radiation	
c.	matter	
d.	gravity	

ANS:	C
Atoms and molecules are the fundamental building blocks of matter.

DIF:	Moderate	REF:	page 3	OBJ:	List the fundamental building blocks of matter.

	4.	Ice and steam are examples of two forms of _____.
a.	matter	
b.	radiation	
c.	energy	
d.	work	

ANS:	A
Ice and steam are examples of two forms of matter.

DIF:	Difficult	REF:	page 4	OBJ:	Describe states of matter.

	5.	The formula E=mc2 is the basis for the theory that led to the development of _____.
a.	x-rays	
b.	electromagnetic radiation	
c.	nuclear power	
d.	cathode ray tubes	

ANS:	C
The formula E=mc2 is the basis for the theory that led to the development of nuclear power.

DIF:	Difficult	REF:	page 5	OBJ:	Understand the theory of energy-mass equivalence.

	6.	Radio waves, light, and x-rays are all examples of _____ energy.
a.	nuclear	
b.	thermal	
c.	electrical	
d.	electromagnetic	

ANS:	D
Electromagnetic energy includes radio waves, light, and x-rays as well as other parts of the spectrum.

DIF:	Difficult	REF:	page 4	OBJ:	List types of electromagnetic energy.

	7.	A moving object has _____ energy.
a.	potential	
b.	kinetic	
c.	nuclear	
d.	electromagnetic	

ANS:	B
A moving object has kinetic energy.

DIF:	Moderate	REF:	page 4	OBJ:	Identify various forms of energy.

	8.	What is the removal of an electron from an atom called?
a.	ionization	
b.	pair production	
c.	irradiation	
d.	electricity	

ANS:	A
The removal of an electron from an atom is called ionization.

DIF:	Moderate	REF:	page 5	OBJ:	Understand ionization of matter.

	9.	Ionizing radiation is capable of removing _____ from atoms as it passes through the matter.
a.	neutrons	
b.	protons	
c.	electrons	
d.	ions	

ANS:	C
Ionizing radiation is capable of removing electrons from atoms as it passes through the matter.

DIF:	Moderate	REF:	page 5	
OBJ:	Describe the process of ionization by ionizing radiation.

	10.	The energy of x-rays is _____.
a.	thermal	
b.	potential	
c.	kinetic	
d.	electromagnetic	

ANS:	D
X-rays are a form of electromagnetic energy.

DIF:	Difficult	REF:	page 5	OBJ:	List the category of energy of x-rays.

	11.	The biggest source of man-made ionizing radiation exposure to the public is _____.
a.	atomic fallout	
b.	diagnostic x-rays	
c.	smoke detectors	
d.	nuclear power plants	

ANS:	B
Medical x-ray exposure is the biggest source of man-made radiation.

DIF:	Difficult	REF:	page 6	
OBJ:	Understand the relative intensity of ionizing radiation from various sources.

	12.	In the United States, we are exposed to _____ mR/year of ionizing radiation from the natural environment.
a.	0-5 	
b.	5-20 	
c.	20-90 	
d.	100-300	

ANS:	C
We are exposed to 20-90 mR/yr of ionizing radiation from natural environmental sources in the United States.

DIF:	Difficult	REF:	page 6	
OBJ:	Understand the amount of natural environmental ionizing radiation to which the public is exposed in the United States.	

	13.	The basic quantities measured in mechanics are _____, _____, and _____.
a.	volume, length, meters	
b.	mass, length, time	
c.	radioactivity, dose, exposure	
d.	meters, kilos, seconds	

ANS:	B
The basic quantities measured in mechanics are mass, length, and time.

DIF:	Easy	REF:	page 12	OBJ:	List the basic quantities measured in mechanics.

	14.	An example of a derived quantity in mechanical physics is a _____.
a.	meter	
b.	second	
c.	dose	
d.	volume	

ANS:	D
Volume is a derived unit.

DIF:	Moderate	REF:	page 12	OBJ:	Recognize an example of a derived quantity.

	15.	_____ is a special quantity of radiologic science.
a.	Mass	
b.	Velocity	
c.	Radioactivity	
d.	Momentum	

ANS:	C
Radioactivity is a special quantity of radiologic science.

DIF:	Easy	REF:	page 12	
OBJ:	Recognize radioactivity as a special quantity of radiologic science.

	16.	Exposure is measured in units of _____.
a.	becquerel	
b.	sieverts	
c.	meters	
d.	grays	

ANS:	D
Exposure is measured in units of grays.

DIF:	Moderate	REF:	page 14	OBJ:	Understand units of radiation measurement.

	17.	Today, radiology is considered to be a(n) _____ occupation.
a.	safe	
b.	unsafe	
c.	dangerous	
d.	high-risk	

ANS:	A
Today, radiology is considered to be a safe occupation because of effective radiation protection practices.

DIF:	Moderate	REF:	page 10	OBJ:	Understand the risk of an occupation in radiology.

	18.	What does ALARA mean?
a.	All Level Alert Radiation Accident	
b.	As Low As Reasonably Achievable	
c.	Always Leave A Restricted Area	
d.	As Low As Regulations Allow	

ANS:	B
ALARA means As Low As Reasonably Achievable.

DIF:	Moderate	REF:	page 10	OBJ:	Understand the meaning of ALARA.

	19.	Computed tomography was developed in the _____.
a.	1890s	
b.	1920s	
c.	1970s	
d.	1990s	

ANS:	C
Computed tomography was developed in the 1970s.

DIF:	Moderate	REF:	page 10	
OBJ:	Relate history of the development of computed tomography.	

	20.	Filtration is used to _____.
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	

ANS:	A
Filtration is used to absorb low-energy x-rays.

DIF:	Moderate	REF:	page 10	
OBJ:	Relate history of the development of computed tomography.