Chapters 1-12

Question 1

What is a Radiograph?

Answer 1

a visible photographic record on film produced by x-rays passing through an object

Question 2

What are X-Rays?

Answer 2

a form of electromagnetic radiation similar to visible light but of a shorter wavelength

Question 3

What is Electromagnetic Radiation?

Answer 3

a method of transporting energy through space, distinguished by wavelength, frequency and energy

Question 4

What are the 2 characteristics of Electromagnetic Radiation?

Answer 4

particles

waves

Question 5

What makes up an atom?

Answer 5

protons (positive)
neutrons (neutral)
electrons (negative)

Question 6

What is Radiant Energy?

Answer 6

energy contained in light rays or any other form of radiation

Question 7

What is Wavelength?

Answer 7

the distance between 2 consecutive corresponding points on a wave

Question 8

Shorter wavelength=

Answer 8

high frequency=greater energy

Question 9

Longer wavelength=

Answer 9

low frequency=lesser energy

Question 10

The higher the frequency

Answer 10

more penetrating power

Question 11

What is Electromagnetic Spectrum?

Answer 11

electromagnetic radiation grouped according to wavelength and frequency

Question 12

What is Frequency?

Answer 12

the number of cycles of the wave that pass a stationary point in a second

Question 13

What is an X-ray Beam?

Answer 13

a number of x-rays traveling together through space at a rapid speed

Question 14

What is Quanta?

Answer 14

a bundle of radiant energy (photons)

Question 15

What is Fluorescence?

Answer 15

the ability of a substance to emit visible light

Question 16

What is Excitation?

Answer 16

a process in which an electron is moved to a higher energy level within an atom

Question 17

What is Ionization?

Answer 17

a process in which an outer electron is removed from the atom so that the atom is left positively charged

Question 18

What is a Cathode?

Answer 18

negatively charged electrode

Question 19

What is an Anode?

Answer 19

positively charged electrode

Question 20

At what end of the tube are electrons found?

Answer 20

cathode end

Question 21

What is produced more? heat or x-rays?

Answer 21

1% x-rays

99/5 heat

Question 22

Who discovered X-Rays?

Answer 22

Wilhelm Conrad Roentgen

Question 23

T or F: All radiant energy travels in wave form along a straight path?

Answer 23

True

Question 24

How are X-Rays produced?

Answer 24

when electrons are slowed or stopped by the atoms of a target area

Question 25

The amount of xray that is absorbed by an object depends on what?

Answer 25

physical density of the object and the atomic number

Question 26

Which process takes more energy: excitation or ionization?

Answer 26

excitation

Question 27

What are the elements necessary for xray production?

Answer 27

``` electrons acceleration clear path target vacuum environment ```

Question 28

What does the cathode do in an xray tube?

Answer 28

provides source of electrons and directs them toward the anode

Question 29

What are the components of the cathode?

Answer 29

filament made of tungsten | molybdenum focusing cup

Question 30

What is the amount of energy being applied to the filament in the cathode called?

Answer 30

mA (milliamperage)

Question 31

How is the filament in the cathode heated?

Answer 31

by Low energy circuit

Question 32

What does the mA describe?

Answer 32

number of xrays produced during exposure

Question 33

T or F: the quantity of electrons released by the cathode depends on the heat of the filament

Answer 33

True

Question 34

The greater the mA the ____ and _____

Answer 34

hotter the filament | more electrons