Modeling Light Waves
Electromagneic Waves come from what kind of sources
Visible and Invisible light sources
Electromagentic waves wit longer wavelength have lower/higher frequencies. Electromagnetic waves wit shorter wavelenths have XXX frequencies
lower/higher
As sound wave, frequency determines XXX
pitch
Light moves XXX through the air and more XXX through water
quickly, slowly
These are in decreasing order of wavelengths
radio (lowest), microwaves, infared, visible ligt, ultraviolet light, X rays and gamma rays (highests)
longest wavelength color
red
The change of speed of te light is usually what caused the wave to XXX as it passes trough the boundary
refract/Bend
trasmit
to allow to pass through
refract
to bend or change direction of a wave
reflect
to bounce back
transmit
to pass through a medium
What color as the shortest wavelength
Blue/Violet
Violet waves are refracted or bent at a great angle than red waves. T or F
True
Waves are measured by what three things?
amplitude, wavelength, frequency
Energy of a wave is porportional to the square of the xXXX
ampltude
Visible light is the only part of the electromagnetic spectrum human eyes can detect T or F
True
Mechnical Waves needs a mediu in which to travel (T/F)
True (Sound or water Waves
transparent
(adj.) allowing light to pass through; easily recognized or understood; easily seen through or detected
Prism
A piece of glass that seperates white light into colors of the spectrum.
Color
A specific frequency or wavelength of visible light
transverse wave
A wave in which the particles of the medium move perpendicularly to the direction the wave is traveling
Brightness
Amplitude or height of a wave measured from the crest to midway between the crest and trough
When we use the wave model of light we can describe he qualities of that light. What are the qualities of that light? (2)
Color-wavelength and Brightness (amplitude)
Electromagnetic waves do or do not need a medium
DO NOT
When water waves pass through a narrow slit in a barrier they spread out rapidly. This is known as ?
Diffraction
A waves frequency and the amount of energy transferred by the way, the amount of energy transferred by waves in a given time is porportional its frequency. This means if the waves frequency DOUBLES the amount of energy being transferred by the WAVE XXX?
Doubles
light energy
Energy in the form of moving waves of light Park of the electromagentic space
Waves are distinct from other energy transport systems because they can transport energy w/o the need to transport matter
Example: A bat transfers energy to a ball, the ball is transported to a new position some distance way.
Name examples of how refraction is used
Eye Glasses, telescropes, microscropes, prisms
What is another way to measure electromagneetic waves by its XX?
Frequency
wavelength
Horizontal distance between the crests or between the troughs of two adjacent waves
Color of light can be desribed using its wavelenght. Red light has the longest or shortest wavelength.
Longest
high amplitude= XXX
Louder the sound
These waves transfer energy through a medium
Mecanical waves
Do Electromagenic waves need a medium to travel
No
Are amplitude and frequency connected
No Adjusting amplitude does not cause a change in a waves wavelength or frequency
Absorption
Not all light is reflected or scattered. Black abosrbs all light.
Frequncy
Number of wavelength that pass a fixed point each second , measured in hertz
Diffraction
Occurs when an object causes a wave to change direction and bend around it
light can be modeled as _____ or _____
Particle and as a wavve
The amount of energy transferred by waves in a given time is XXX to its frequency
Porportional
Angel of incidence equals the angle of reflection
Reflection
Most common observed wave behavior
Reflection
Dispersion
Refraction causing the separation of white light into its various color wavelength
This is a XXX wave
TRansverse
Refraction
The bending of a wave as it passes at an angle from one medium to another
Reflection
The bouncing back of a wave when it hits a surface through which it cannot pass.
Frequency corresponds to pitch and energy
The higher the sound, the higher the wave frequency is and the more energy it has
Being able to model a reflected light wave allows us to calculate the angle of incidence as well as the angel of reflection
This is important for Solar Panels so tey capture as much light as possible.
Waves work in the same way as oscillation
Traveling along with an energy transfer.
A wave can be transmitted through a boundary, meaning it passes through the boundary from one medium to another. Most boundaries, part of the wave is reflected and part is transmitted. T of F
True
Absorption occurs when all of some of the light energy from the light wave is transferred from one medium to another. T or F
True
Colored surfaces absorb al lwavelengths except for the color they are reflecting T or F
True
Somest light waves can pass through a medium without being refracted such as glass T or F
True
longitudinal wave
a wave in which the particles of the medium vibrate parallel to the direction of wave motion
Light waves are a combination of XXX and XXXX energy that travel as particles called XXXX.
electric, magenetic, photons
Light is made up of XXXX that do not need a medium in which to travel
electromagentic waves
visible light
electromagnetic waves that are visible to the human eye
How is scattering different from reflection?
scattered light goes back out in all directions. White surfaces such as walks, scatter light in all the colors that strike them.
low amplitude
soft sound
law of reflection
the angle of incidence is equal to the angle of reflection
spectrum
the band of colors produceed when light is separated into its component wavelengths
Amplitude
the height of a wave's crest
Frequency
the number of complete wavelengths that pass a point in a given time. Measured in hertz.
freqency
the number of wavelength that pass by a point each second
Air is a relatively fast medium T/F
true
shortest wavelength color
violet
A sound wave, determines the XXX
volume
Reflection of light
when light bounces off an object
