optics Flashcards

1
Q

what is the height or depth of a wave?

A

amplitude

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2
Q

how do we measure frequency

A

in Hurtz (Hz)

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3
Q

wavelength is…

A

the distance of 1 wave cycle (resting point, to crest, to trough, then back to resting point)

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4
Q

what is the 5 parts of a wave?

A

crest, trough, amplitude, resting point and wavelength

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5
Q

the wavelength th of a wave decreases as ___________ increases

A

frequency

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6
Q

true or false: waves move matter forward

A

FALSE - waves move matter up + down

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7
Q

frequency =

A

cycles over seconds

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8
Q

the larger the amplitude the….

A

…higher the frequency

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9
Q

the smaller the frequency the…

A

larger the wavelength

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10
Q

electromagnetic spectrum is

A

the entire range of radiant energy

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11
Q

light energy is a form of

A

radiant energy

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12
Q

what is the order of waves from least frequency to most

A

radio waves, microwaves, infrared waves, visible spectrum, ultraviolet rays, X - rays, and gamma rays

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13
Q

our eyes detect how many rays of light?

A

7

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14
Q

our light starts at the

A

sun

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15
Q

the primary colours of light are

A

red green and blue

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16
Q

the secondary colours of light are

A

cyan magenta and yellow

17
Q

if something is red, it absorbs all colours but

A

red

18
Q

if something absorbs all colours

A

it is black

19
Q

if something reflects all colours

A

it is white