Chapter 3 Flashcards

1
Q

Are used in conjunction with a magnetic field resonance imaging (mri) to create images of the body

A

Radio waves

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2
Q

What two rays are used for imaging in radiology and nuclear medicine

A

Gamma and X-rays

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3
Q

What’s one difference between the ends of the spectrum

A

Only high energy radiation ( X-rays and gamma ray) has the ability to ionize matter

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4
Q

Who developed the electromagnetic theory

A

James maxwell

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5
Q

All ___________ _________ are very similar in that it has no mass, Carries energy in waves as electric and magnetic disturbance in space and travel at the speed of light

A

Electromagnetic radiation

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6
Q

Is a way of ordering or grouping the different electron magnetic radiation

A

Electromagnetic spectrum

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7
Q

All members of the electromagnetic spectrum have the same __________ and vary only in their energy. Wavelength, and frequency.

A

Velocity

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8
Q

List the electromagnetic spectrum from lowest to highest

A

Lowest: radiowaves, microwaves, infrared light, visible light, ultraviolet light, X-rays, and gammas rays

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9
Q

The wave length of the electromagnetic spectrum ranges from

A

10^ 6 to 10^ -16 meters

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10
Q

The frequency ranges from

A

10^2 to 10^24 hz

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11
Q

True or false electromagnetic energy can exist apart from Matter and travel through a vacuum

A

True

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12
Q

True or false mechanical energy requires an object or matter to act through

A

True

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13
Q

Example of mechanical energy

A

Sound

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14
Q

Electromagnetic formula: E= hf, what does each letter stands for

A

E - energy
H- Planck constant
F- frequency of photons

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15
Q

E=hf is measured in

A

Electricon Volts

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16
Q

the ENERGY of the electromagnetic spectrum ranges from

A

10^-12 to 10^ 10

17
Q

True or false. Electromagnetic radiation exhibits properties of a wave or particles depending on its energy and in some cases its environment also called wave- particle duality

18
Q

Electromagnetic radiation characteristics

A

Velocity, amplitude,wavelength, and frequency

19
Q

All The VELOCITY for electromagnetic are the same

A

3x10^8 m/s

20
Q

Refers to the maximum height of a wave

21
Q

Is measured of the distance from the peak of one wave to the peak of the next wave

A

Wavelength

22
Q

Refers to the number of waves that pass a given point per second

23
Q

True or false electromagnetic radiation travels at the same velocity, the relationship between the wavelength and frequency is inverse

24
Q

True or false the longer the wavelength the lower the frequency

25
Wavelength are express through
Meters
26
Frequency is measured in
Hertz
27
Formula for calculating wavelength or frequency are
Velocity= frequency x wavelength ( v= f/\)
28
True or false is replaced with C ( constant symbol for speed of light ) new formula is c= f/\
True
29
When solving for frequency the formula is f= c/\ true or false
True
30
When solving for wavelength the formula is
/\ = c/f
31
High energy photon acts more like
Particles
32
Lower energy radiation acts more like
Waves
33
The intensity of electromagnetic radiation diminishes by a factor of the square of the distance from the source
Inverse square law
34
Intensity Formula:I1 / i2 = (d2)^2 / (d1)^2 what does each of these letters stand for
I - luminosity D- distance