12.2 Flashcards
(22 cards)
Evidence for wave model of light
Light experiences reflection refraction diffraction and interference
Evidence supporting particle model of light
Light can knock off metals and travel through a vacuum
Intensity is proportional to…
Amplitude
Frequency is proportional to…
Energy
Brightness depends on..
Intensity and distance
Reflection
The bouncing back of a wave when it meets a surface or a boundaries
Diffraction
The bending of waves as they pass an edge or an opening
Refraction
The bending of a wave as they pass from one medium to another
Violet light is bent more than red because…
It travels slower than red
Why objects have colors
Because they reflect certain wavelengths of light
Waves are defined as transfers of
Energy
…make objects appear in different direction
Refraction
Intensity
Amount of light or energy flows through an area of space
Gamma rays
Shortest wave length
Radio waves
Longest wave length
The speed of sound depends on how often…
molecules of the medium collide and transmit energy
Light is bent when it passes through different mediums because…
The speed is different through different mediums
Photon
A particle of light
Don’t have mass
Bundles of energy
X-rays and gamma rays have…
Very high energy
Light can be modeled as
Electromagnetic wave or photons
Energy of a photon is proportional to
Frequency of the corresponding light wave
Light travels slowly in a
Medium air or water