RADPRO MODULE 5

Question 1

photons are known

Answer 1

electromagnetic energy

Question 2

properties of EME

Answer 2

frequency, wavelength, velocity, and amplitude.

Question 3

energy exists over a wide range called an energy

Answer 3

continuum

Question 4

is an uninterrupted (continuous) ordered sequence.

Answer 4

continuum

Question 5

the only EME apparent to us

Answer 5

visible light

Question 6

smallest quantity of any type of electromagnetic energy

Answer 6

photon

Question 7

the smallest quantity of an element

Answer 7

atom

Question 8

It may be pictured as a small bundle of energy

Answer 8

photon

Question 9

that travels through space at the speed of light

Answer 9

quantum

Question 10

who showed that visible light has both electric and magnetic properties, hence the term electromagnetic energy

Answer 10

James Clerk Maxwell

Question 11

speed of lgiht

Answer 11

3 𝑥 10^8 m/s.

Question 12

Physicists use the term ____ to describe interactions among different energies, forces, or masses that can otherwise be described only mathematically

Answer 12

field

Question 13

governs the interaction of different masses.

Answer 13

gravitational field

Question 14

governs the interaction of electrostatic charges

Answer 14

electric field

Question 15

the interaction of magnetic poles.

Answer 15

magnetic field,

Question 16

½ of the range from 1 crest to valley over which the sine wave varies.

Answer 16

amplitude

Question 17

highest point of sine wave

Answer 17

crest

Question 18

lowest point of sine wave

Answer 18

valley

Question 19

what is constant in the electromagnetic energy

Answer 19

velocity (c)

Question 20

(λ).

Answer 20

lambda wavelength

Question 21

usually identified as cycles per second.

Answer 21

frequency

Question 22

SI of frequency

Answer 22

hertz

Question 23

frequency that is audible

Answer 23

20 hz to 20khz

Question 24

number of wavelengths that pass a point of observation per second

Answer 24

Frequency

Question 25

the distance from one crest to another, from one valley to another, or from any point on the sine wave to the next corresponding point.

Answer 25

wavelength

Question 26

what will happen to wavelength if the frequency increase

Answer 26

reduced

Question 27

note

Answer 27

The wave amplitude is not related to wavelength or frequency.

Question 28

wave equation

Answer 28

Velocity = Frequency x Wavelength or 𝑣=𝑓λ

Question 29

frequency range of electromagnetic energy extends from approximately

Answer 29

102 to 1024 Hz

Question 30

The photon wavelengths associated with these radiations are approximately

Answer 30

107 to 10-16 m

Question 31

Three regions of electromagnetic radiation most important to radiologic science:

Answer 31

1.Visible light 2.X-ray and gamma radiation 3.Radiofrequency (RF)

Question 32

wavelength, measured in

Answer 32

nanometers

Question 33

x-rays are described in terms of a unit of energ

Answer 33

electron volt (eV).

Question 34

This deviation in line of trave

Answer 34

refraction

Question 35

Sunlight also contains two types of invisible light

Answer 35

INFRARED AND ULTRAVIOLET

Question 36

consists of photons with wavelengths longer than those of visible light but shorter than those of microwaves

Answer 36

Infrared light

Question 37

located in the electromagnetic spectrum between visible light and ionizing radiation.

Answer 37

Ultraviolet light

Question 38

Communication broadcasts are usually identified by their frequency of transmission and are called

Answer 38

radiofrequency (RF) emissions

Question 39

behave more like waves.

Answer 39

Visible light

Question 40

behave more like particles

Answer 40

X-ray photons

Question 41

interact with electrons and atoms

Answer 41

X-rays

Question 42

– interacts with molecules

Answer 42

UV light

Question 43

measured in nanometers (interacts with living cells)

Answer 43

Visible light

Question 44

measured in centimeters (interacts with objects of same size)

Answer 44

Microwaves

Question 45

measured in meters (interacts with metal rods called antennas

Answer 45

Radio & TV waves

Question 46

Structures that absorb x-rays are

Answer 46

radiopaque

Question 47

structure that transmit light

Answer 47

radiolucent

Question 48

This decrease in intensity is inversely proportional to the square of the distance of the object from the source

Answer 48

inverse square law

Question 49

X-ray energy ranges from approximatel

Answer 49

10 keV to 50 MeV.

Question 50

Planck’s constant and (h)

Answer 50

4.15 × 10-15 eVs or 6.63 × 10-34 Js.