Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

RadProd > Radiation > Flashcards

Radiation Flashcards

1
Q

The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.

A

Radiation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

A stream of particles or electromagnetic waves emitted by the atoms and molecules of a radioactive substance as a result of nuclear decay.

A

Radiation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

is the process by which ions are formed by gain or loss of an electron from an atom or molecule.

A

IONIZATION

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

MEANS OF RADIATION ENTRY THROUGH THE BODY (3)

A
  1. Inhalation
    2.Ingestion
    3.Absorption/ skin
    cuts
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Radiation coming from outside the body

A

External exposure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Radiation emitted within the body

A

Internal exposure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Sources of radiation

A
  1. Natural sources
  2. Man-made radiation sources
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

constant source of ionizing radiation present in the environment and emitted from a variety of sources.

A

NATURAL SOURCES

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Natural sources also called as

A

Background radiation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

A source of natural background radiation, which originates in outer space and is composed of penetrating ionizing radiation (both particulate and electromagnetic).

A

COSMIC BACKGROUND RADIATION

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

The sun and stars send a constant stream of cosmic radiation to Earth, much like a steady drizzle of rain.

A

COSMIC BACKGROUND RADIATION

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Electromagnetic radiation emitted by the Earth’s surface and atmosphere is called terrestrial or long wave radiation (Arnfield 2020)

A

terrestrial radiation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Low levels of terrestrial radiation

A

Uranium, Thorium, and their decay products are found everywhere.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

decay products of uranium

A

Throrium, Radium, and Radon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The major isotopes of concern for terrestrial radiation are

A

Uranium and the decay products of uranium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

is a naturally occurring radioactive gas which can accumulate in enclosed places, including houses and other buildings.

A

Radon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

When a radioactive atom decays, its nucleus, which is unstable, breaks down, turning into the nucleus of another element called a

A

daughter product.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

It comes from the radioactive decay chain of uranium, which is present in small amounts almost everywhere in the Earth’s crust

A

Radon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

3 natural sources

A

cosmic
and terrestrial sources
INTERNAL RADIONUCLIDE (RADIATION)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

It is the primary source of radiation from the human body.

A

potassium-40

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

K40 in a 70-kg person is

A

about 5,000 Bq, which represents 5,000 atoms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

essentially are from human food derived from plants.

A

Carbon-14

23
Q

The rates of disintegration of—and— in the normal adult body are comparable (a few thousand disintegrated nuclei per second).

A

Potassium-40

Carbon-14

24
Q

TWO DISTINCT GROUPS EXPOSED TO MAN-MADE RADIATION SOURCES

A
  1. Members of the public 2.Occupationally exposed
    individuals
25
Q

is any individual except when that individual is receiving an occupational dose.

A

members of the public

26
Q

The most significant source of man-made radiation exposure to the public is from medical procedures, such as (3)

A

diagnostic x- rays, nuclear medicine, and radiation therapy.

27
Q

Is the dose received by an individual in the course of employment in which the individual’s assigned duties involves exposure to radiation or to radioactive material.

A

occupationally exposed individuals

28
Q

Occupationally exposed individuals, however, are monitored for radiation exposure with ____ so that their exposures are well documented in comparison to the doses received by members of the public

A

dosimeters

29
Q

Two basic types of radiation

A

Electromagnetic radiation

Electromagnetic waves

30
Q

Pure energy with no mass and is like vibrating or pulsating waves of electrical and magnetic energy.

A

Electromagnetic radiation

31
Q

is produced by vibrating electric charge and as such, they consist of both an electric and magnetic component.

A

Electromagnetic radiation

32
Q

Electromagnetic waves Act like a stream of small “packets” of energy called

A

photons

33
Q

Travel in a wave-like pattern

A

Electromagnetic radiation

34
Q

Travel in a wave-like pattern

A

Electromagnetic radiation

35
Q

Electromagnetic radiation travels in a straight line at the speed of

A

speed of light (3x10^8m/s)

36
Q

A changing magnetic field will induce a changing electric field and vice-versa (the two are linked)
These changing fields form

A

Electromagnetic waves

37
Q

do not require a medium to propagate.

A

Electromagnetic waves

38
Q

The electromagnetic energy can be described by

A

frequency, wavelength, or energy

39
Q

The number of crests that pass a given point within one second is described as the

A

frequency of the wave.

40
Q

The unit of frequency is

A

Hertz (Hz)

41
Q

The unit of frequency is Hertz (Hz), named after?

established the existence of radio waves.

A

Heinrich Hertz

42
Q

One wave or cycle per second is called a

A

Hertz (Hz)

43
Q

Wavelength is represented by the Greek letter

A

lambda (λ)

44
Q

The distance between the crests is the

A

wavelength.

45
Q

The ____ the wavelength, lower frequency

A

longer

46
Q

The_____ the wavelength, higher the frequency

A

shorter

47
Q

An electromagnetic wave can also be described in terms of its

A

Energy

48
Q

An electromagnetic wave can also be described in terms of its

A

Energy

49
Q

The unit of energy is called_____ or Joule (J).

A

electron volts (eV)

50
Q

is the amount of kinetic energy needed to move an electron through one volt potential.

A

An electron volt

51
Q

The _____ the wavelength, higher the frequency, the higher the energy of electromagnetic radiation

A

shorter

52
Q

The____ the wavelength, lower frequency, the lower the energy of electromagnetic radiation

A

longer

53
Q

Wavelength and frequency are ____ related to each other

A

Inversely

RadProd (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions