Wave Interactions
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How waves interact with the world around them.
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56 Terms
Definition of Reflection
When any wave bounces off of a surface/barrier
All waves have the ability to ______.
Reflect
A sound reflection is called a….
Echo
The reflection is the ____ of the wave.
Opposite
Definition of diffraction
The bending of waves around a barrier or through an opening
Waves usually move in a ___ line.
straight
When a wave goes around a corner or through an opening the wave____.
Diffracts
The amount of diffraction of a wave depends on ___ factors……
2- The size of the opening and the wavelength
The smaller the opening the ____ diffraction.
more
The larger the opening the ___ diffraction.
less
The longer the wavelength the ___ diffraction.
more
The shorter the wavelength the ____ diffraction.
less
Low frequency= (hint 5)
less waves, larger wavelengths, less energy, more diffraction, less refraction
Higher frequency= (hint 5)
more waves, smaller wavelengths, more energy, less diffraction, more refraction
The bigger the wave the _____ it has to diffract/bend to get through an opening.
more
Definition of refract
the bending of a wave as the wave passes through different mediums
the wave changes ____ as the medium changes
speed
The density of a medium causes a change in ___.
speed
The more dense a medium is, the __ a wave will be.
slower
Refraction is caused by the interactions of the wave with the ____ in a medium.
electrons
The more dense the medium=
more electrons, more interactions= more refraction=slower the speed
The abbreviation of the colors of the rainbow….
ROY G. BIV
The higher the frequency the ____ the wavelengths.
shorter
The lower the frequency the ______ the wavelengths.
longer
wavelength and frequency are ___.
related
What causes mediums to refract?
The change in mediums
Red refracts the ____.
least
Violet refracts the ____.
most
ROY G. BIV stands for…
Red, Orange, Yellow, Green, Blue, Indigo, Violet
Light is an….
Electromagnetic wav
Light is 1 of _ electromagnetic waves that make up the electromagnetic spectrum
7
All ___ give off the whole EMS
stars
The seven Electromagnetic waves are….
Gamma Rays, X- Rays, UV Rays, Visible Light, Infrared, Microwaves, and Radio Waves
Electromagnetic waves have _ parts……
2- Electric field and magnetic field
All particles are _____ by an electromagnetic field.
surrounded
A magnetic field has _ poles…
2- North and south poles
Both fields combine at _________ points to form and electromagnetic waves
Perpendicular
The first step in creating electromagnetic waves…..
An electrically charged particle vibrates
The second step in creating electromagnetic waves…..
The vibrating electric particles cause the field to move creating an electric field
The third step in creating electromagnetic waves…..
the electric field vibrates which creates a magnetic field
The fourth step in creating electromagnetic waves…..
both fields vibrate at a perpendicular point together to create an electromagnetic wave
Light has a speed ___.
Limit
Lights speed limit is….
300,000 km/s (186,000 miles/s)
Light takes ____ to get from point A to point B.
time
The formula for speed is….
distance/time
Definition of luminous:
Objects that emit light
Definition of illuminated
Objects that reflect light
Definition of absorption:
The transfer of light energy into and object
Definition of Scattering:
When light bounces off of a object in kk directions
What are three ways light interacts with matter?
Reflection, absorption, transmission
Definition of transmission:
When light passes through matter
What are the different types of matter that interacts with light?
Transparent, translucent, opaque
What is transparent?
Easily see through
Definition of translucent:
Sort of see through
Definition of opaque:
Unable to see through
The speed of light:
300,000 km/second