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Physics > Electromagnetic Spectrum > Flashcards

Electromagnetic Spectrum Flashcards

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1
Q

is the range of all types of EM radiation

A

electromagnetic spectrum

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2
Q

is the energy that travels and spreads out as it goes

A

radiation

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3
Q

are formed when an electric field comes in contact with magnetic field

produced by mutually-inducing electric and magnetic waves

A

electromagnetic waves

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4
Q

spreads out across a spectrum from very short gamma rays to x-rays, ultraviolet rays, visible light waves, even longer infrared waves, microwaves to radio waves which can measure longer than a mountain range

A

electromagnetic radiation

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5
Q

EM waves are similar to _____

both are energy waves (transmitting energy)

A

oceanwaves

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6
Q

1 wave or cycle per second

A

Hertz

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7
Q

em waves can travel thru a vacuum of space at the constant _______

A

speed of light

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8
Q

the number of these crests that pass a given point in one second is described as

A

frequency of the wave

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9
Q

adding energy ____ the frequency of the wave and makes the wavelength _______

A

increases; shorter

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10
Q

object appears to have colors because em waves interact with ________

A

their molecules

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11
Q

our eyes can detect energy with wavelegths from _______

A

400-700 nanometers

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12
Q

some wavelengths in the visible spectrum are _____ and other wavelengths __________

A

absorbed

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13
Q

capable of transmitting its energy thru a vacuum, does not require medium to travel thru

A

electromagnetic wave

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14
Q

not capable of transmitting its energy thru vacuum, requires medium to travel

A

mechanical wave

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15
Q

increasing wavelength

A

violet - indigo - blue - green - yellow - orange - red

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16
Q

increasing frequency

A

red - orange - yellow - green - blue - indigo - violet

17
Q

wave in which the plane of movement is PERPENDICULAR to the plane of movement of wave

A

transverse wave

18
Q

wave in which the plane movement of the particles is PARALLEL to the plane of movement of the wave

A

longitudinal wave

19
Q

basic properties of a wave

A

amplitude

wavelength

period

frequency

20
Q

maximum displacement of a wave from its starting position

A

amplitude

21
Q

distance between two adjacent crests (greatest amplitude of a wave) or troughs (greatest negative amplitude of wave)

A

wavelength

22
Q

number of arrivals of 2 consecutive crests or trough per second, also the reciprocal of wave’s period

A

frequency

23
Q

time between the arrival of two consecutive crests or troughs

A

period

24
Q

shortest frequency, longest wavelength

length of a football field

A

radio waves

25
Q

radar

A

radio detection and ranging

26
Q

produce more energy due to shorter wavelengths and higher frequencies

basically a high frequency radio wave and are made by various types of transmitter

A

microwaves

27
Q

higher temperature produce shorter infrared rays

shorter wavelength and higher frequency than microwaves

literally means below the “red” - lower frequency than the red part of the visible light

A

infrared ration

28
Q

shorter wavelength and higher frequency than infrared waves

electromagnetic waves that we can see – LIGHT

A

visible light

29
Q

above violet

shorter wavelength and higher frequency than visible light

carry more energy than visible light

doesn’t reach earth

A

ultraviolet rays

30
Q

shorter wavelength and higher frequency than UV rays

carry a great amount of energy

can penetrate most matter

called “roentgen rays”

A

x-rays

31
Q

can penetrate soft substances like flesh and bones

A

soft x-ray

32
Q

more penetrating; used in industries

A

hard x-rays

33
Q

powerful among the seven because of the high frequency

shorter wavelength and higher frequency than x-rays

carry the greatest amount of energy and penetrate the most

A

gamma rays

Physics (7 decks)

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