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memorize.ai (lvl 286)

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39 cards

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Section 1

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visible light

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Science

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Last updated

7 years ago

Date created

Mar 14, 2020

Cards (39)

Section 1

(39 cards)

visible light

Front

a very small portion of the EM spectrum and a form of radiant energy red has the lowest frequency, and violet has the highest

Back

compression

Front

the area where the particles/medium of the wave crowd together in a compression (longitudinal wave)

Back

diffraction

Front

the bending of waves around a barrier or through an opening

Back

interference

Front

two or more waves overlapping

Back

electromagnetic wave

Front

Do not require a medium EX: light microwave radio

Back

ultra violet light waves

Front

ultra means above/beyond emitted by the sun can be useful or harmful more energy than visible light, so directly after last color we can see on the EM spectrum USEFUL EX: vitamin D from sun kills germs blacklights cureing gel nails HARMFUL EX: sunburns skin cancer wrinkles damages eyes

Back

microwaves

Front

carry more energy than radio waves, but less than inferred Ex; microwaves radar for ships, police and planes

Back

infrared light haves (heat waves)

Front

infra means below emitted by the sun directly below the first color we can see on the visible light spectrum Ex: night goggles how snakes see prey

Back

rarefaction

Front

the area where the particles of the wave spread apart for a compression (longitudinal wave)

Back

colors

Front

white= all colors of light reflected black= all colors absorbed specific colors = color you see is being reflected and all the others are absorbed

Back

amplitude

Front

maximum distance the wave vibrates from its rest point the "height" of the wave form rest position the larger the amplitude the more energy

Back

medium

Front

a substance through which a wave can travel

Back

interference

Front

when two or more waves overlap and combine as a result of diffraction

Back

wave speed/ velocity

Front

the speed at which the wave. travels velocity depends on the medium that a wave is traveling through for a compression wave

Back

reflection

Front

the bouncing back of the light after striking a barrier

Back

refraction

Front

bending of a wave as it passes at an angle from one medium to another

Back

longitudinal waves/ compression

Front

particles of the medium vibrate back and forth along the path that the wave travels (require a medium) EX: all sound waves

Back

frequency

Front

number of waves produced in a given amount of time (how many waves pass each second) -The higher the waves frequency, the shorter the wavelength -count the number of crests and troughs or a transverse wave -number of compressions and rare fractions for a compression wave that passes per second -higher frequency = more energy

Back

diffraction

Front

lightwaves strike an object and new waves are produced (go around barrier)

Back

gamma rays

Front

highest energy and shortest wavelength highest frequency of EM waves can go through wood, paper can't go through metal

Back

unit for wavelength

Front

meters

Back

unit for velocity

Front

meters per second

Back

XRAYS

Front

penetrates skin without being absorbed by bones and teeth

Back

radiation

Front

the emission of energy in the form of light waves EX: all light waves

Back

trough

Front

the lowest point on a transverse wave

Back

radio waves

Front

lowest energy and longest wavelength/ frequency of EM waves Ex: Am& Pm radios walkie talkies radio tower sometimes ships

Back

unit for frequency

Front

hertz 1hertz= 1wave per second

Back

reflection

Front

when a wave bounces after striking a barrier

Back

crest

Front

the highest point of a transverse wave

Back

absortion

Front

transer of energy carried by light waves to particles of material

Back

wave

Front

any disturbance that transmits energy through matter or space To make a wave travel faster add more energy (think of yelling)

Back

Mechanical wave (M&M)

Front

Require a medium (particles bump particles to transmit energy) EX: sound waves ocean waves

Back

scattering

Front

the release of light energy by particles of matter that have absorbed energy (why the sky is blue)

Back

refraction

Front

the bending of the wave due to moving from one medium to another, which is caused by the velocity of the wave in the new medium

Back

law of reflection

Front

angle of indecent = the angle of reflection

Back

light waves

Front

a wave that the energy moves perpendicular to the direction of the wave (type of transverse wave) that DOES NOT require a medium to move energy (electromagnetic wave) -Travels in straight lines until striking an object

Back

transmission

Front

the passing of light through matter transparent- allow most light to pass through translucent-allow some light to pass through opaque- no light can pass through

Back

wave length

Front

distance between any two adjacent troughs or crests for a transverse wave or the distance between two adjacent compressions or refractions for a compression/ longitudinal wave

Back

transverse waves

Front

waves in which particles travel in an up and down motion and the particles move perpendicular to the direction that the wave is traveling (Dont require a medium) EX: xray microwaves radar

Back