Chapter 3 Quiz

Question 1

1 kilohertz (kHz) is equal to:

a.) 1000 hertz
b.) 100 hertz
c.) 1000000000 hertz
d.) 1000000 hertz

Answer 1

a.) 1000 hertz

Question 2

During a fluoroscopy procedure the tech stands at 5 meters from the xray tube for 1 hour and acquires an equivalent dose of 0.2 msv How much dose would the tech have recieved had they stood 2 meter from the tube for 20 minutes?

a.) 0.4 msv
b.) 1.25 msv
c.) 0.0208 msv
d.) 2.5 msv

Answer 2

a.) 0.4 msv

Question 3

1.5 sec = _________ ms

Answer 3

1500

Question 4

Electromagnetic radiation:

a.) has mass that increases with increasing velocity
b.) exits at zero velocity
c.) has energy represented by amplitude
d.) exists only if its velocity is 3x 10 ^ 8

Answer 4

d.) existis only if its velocity is 3x10^8

Question 5

500ma @ ________ms= 70 mas

Answer 5

140

Question 6

Radiation emitted from a standard radio broadcasting antenna:

a.) has a higher frequency than microwaves
b.) is electromagnetic radiation
c.) is sound
d.) has relatively high energy

Answer 6

b.) is electromagnetic radiation

Question 7

If the intensity received by a patient at 40 inches is 240 mr what will the new intensity be at 48 inches?

Answer 7

167 mr

Question 8

Energy in a stored state is:

a.) energy in motion
b.) power
c.) kinetic energy
d.) potential energy

Answer 8

d.) potential energy

Question 9

Electromagnetic radiation has properties of a wave and a particle.

a.) true
b.) false

Answer 9

a.) true

Question 10

Frequency is typically measured in:

a.) centimeters
b.) hertz
c.) meters
d.) feet

Answer 10

b.) hertz

Question 11

As a waves wavelength increases, its frequency

a.) increases
b.) decreases
c.) stays the same
d.) it depends on the type of emr

Answer 11

b.) decreases

Question 12

Wavelength is defined as:

a.) the next wave
b.) the maximum height of the wave
c.) the speed of a wave
d.) the number of waves passing a given point each second
e.) the distance between the peack of 1 wave to the peak of the next wave

Answer 12

e.) the distance between the peak of 1 wave to the peak of the next wave

Question 13

`Electromagnetic, chemical, electrical and thermal are all types of:

a.) waves
b.) energy
c.) nonionizing radiation
d.) ionizing radiation

Answer 13

b.) energy

Question 14

All of the electromagnetic radiations are capable of ionizing matter.

a.) true
b.) false

Answer 14

b.) false

Question 15

Which of the following memebers of the electromagnetic spectrum has the ability to ionize matter? Choose all that apply.

a.) radiowaves
b.) xrays
c.) microwaves
d.) ultraviolet

Answer 15

b.) xrays

Question 16

Microwaves travel at a velocity of:

Answer 16

3 x 10 ^8

Question 17

Who developed the theory of electromagnetic radiation?

a.) wilhelm roentgen
b.) john dalton
c.) dmitri medeleev
d.) james maxwell

Answer 17

d.) james maxwell

Question 18

Electromagnetic energy is:

a.) a form of chemical energy
b.) a form of energy that exists as stored energy inside a tube
c.) exists due to atomic and molecular motion
d.) a form of energy that exists as an electrical and magnetic disturbance in space

Answer 18

d.) a form of energy that exists as an electrical and magnetic disturbance in space

Question 19

Amplitude is defined as:

a.) the number of waves passing a given point each second
b.) the distance between the peak of 1 wave to the peak of the next wave
c.) the speed of a wave
d.) the maximum height of a wave

Answer 19

d.) the maximum height of a wave

Question 20

Photons with the highest frequencies have the ______.

a.) lowest energy
b.) longest wavelengths
c.) shortest wavelengths
d.) highest velocity

Answer 20

c.) shortest wavelengths

Question 21

Which of the following memebers of the electromagnetic spectrum have the highest velocity?

a.) xrays and gamma rays
b.) radiowaves
c.) microwaves
d.) they all have equal velocity
e.) some of the above, but not all

Answer 21

d.) they all have equal velocity

Question 22

When compared to visible light, xrays have greater:

a.) frequency
b.) velocity
c.) charge
d.) wavelength

Answer 22

a.) frequency

Question 23

Electromagnetic energy cannot travel through a vaccuum.

a.) true
b.) false

Answer 23

b.) false

Question 24

What is the formula that represents the inverse square law?

Answer 24

I1/I2 = (D2)^2/(D1)^2

Question 25

In the formula E=hf, h represents

a.) frequency
b.) energy
c.) electricity
d.) plancks constant

Answer 25

d.) plancks constant