Topic 6 Electromagnetic Waves And Refractiom Flashcards
What are all EMwaves
Transverse waves transfer energy from a source to an absorber
What do all EM waves travel at
The same speed through air or a vacuum
What are the electromagnetic waves form
A continuous spectrum of a range of frequencies
Order of electromagnetic waves in increasing frequency as you go down and decreasing wavelength
Radio waves
microwaves
infrared
visible light
ultraviolet
x-rays
gamma rays
Radio waves
Lowest frequency
Highest wave length
Gamma rays
Highest frequency
Lowest wave length
Why is there such a large range of frequencies
Because they are generated by a variety of changes in atoms and the nuclei
Why are EN waves different purposes 
Because they have different properties
What happens when a wave causes the boundary between a material at an angle
It changes direction and is refracted
What does how much are waves refract By depend on
How much the wave speed up or slow down which usually depends on the density of a two
What happens if A materials has a higher density
The slower a wave travels through it
What happens if a wave crosses the boundary in slows down
It will bend towards the normal
What happens if a material crosses as a boundary and speed up
It speeds up and will be bend away
What changes when a wave is refactod
The wavelength
What stays the same when a wave is refracted
The frequency
