Light and Color

37 terms by HoltThompson 

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Electromagnetic waves are

transverse waves

electromagnetic waves

can travel through a vacuum

which of these electromagnetic waves has the shortest wavelength (highest frequency)

x rays

Compared to the wavelength of ultraviolet waves the wavelength of infrared waves

longer

compared to the velocity of radio waves, the velocity of visible light waves

is the same

the source of all electromagnetic waves is

vibrating charges

which of the following is fundamentally different from the others

sound waves ( they are longitudinal)

The main difference between a radio wave and a sound wave is

one is longitudinal and one is transverse

which of the following is not an electromagnetic wave

sound

heat lamps give off mostly

infrared waves

compared to air the averaged speed of light in water is

slower

the shiny surfaces of metals has most to do with

the loosness of electrons of in metal atoms

the shadow produced by an object held close to a piece of paper in sunlight will be

sharp

The reason solar eclipses are seen less commonly than lunar eclipses is that

the earths shadow covers the moon but the moons shadow covers only a small part of the easrth

a photographer wishes to use a safety light in the darkroom that will emit low energy photons the best color for this light would be

red

which color light carries the most energy

blue

how far is a light second

300000 km

when grazing light is reflected from a surface it is

polarized perpendicular to the surface

light reflected from a lake surface is polarized

horizontally

what is the frequency of an electromagnetic wave havinga wavelength of 50m

60000000 hz

after randomly polarized light passes through a polarizing filter it is

polarized parallel to the axis of the filter

if two polaroid filters are held with their polarization axes at right angles to each other the amount of light transmitted compared to when their axes are parallel is

zero

on the moon the daytime sky looks

black

a tennis ball is more easily seen if its color is

yellow green

different colors of light correspond to different light

frequencies

complementary colors are two colors that

produce white light when added together

the color of an opaque object is determined by the light that is

reflected

if sunlight were red instead of white the most comfortable color to wear on a hot day would be

red

if the atmosphere were 50 times thicker than it now is the sun would appear

red orange

the sky is blue because air molecules in the

act as tiny prisms dispersing all colors of light especially blue light

the true color of water is

cyan

spectral lines in a line spectrum take the shape of lines because the

atoms that emit the light vibrate along a parallel line

if your looking for an instrument that tells what stars are made of look for a

spectroscope

the light from each element produces its own unique line spectrum this is because

each element has its own distinct configuration of electrons which emits distinct frequencies of light.
the frequencies of light emitted by atoms in the gaseous state are the fingerprints of those elements

the three primary colors of light addition are

red green and blue

Highest to lowest energy/frequency
electromagnetic spectrum

gamma rays
x rays
ultraviolet waves
light
infrared waves
microwaves
radio waves

visible light spectrum
highest energy to lowest

violet
blue
green
yellow
orange
red

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