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P6 pt 1 (Transverse/longitudinal (waves transfer energy in direction they…
P6 pt 1
Transverse/longitudinal
transverse waves have sideways vibrations
all oscillations are 90 degrees
transverse waves include
EM Waves
Water ripples and vaves
wave on a string
Longitudinal waves have parallel vibrations
this means vibrations are the same direction as the energy transfer
waves transfer energy in direction they travel
the amplitude is max displacement from undisturbed
distance of a wave starts at one trough and ends at the adjacent one
frequency is complete waves passing through a point in a second
T=1/f
wave behaviour
Magnetic spectrum
Radio waves
Microwaves
Infra Red
Visible Light
Ultra Violet
X rays
Gamma Rays
waves can be absorbed transmitted or reflected
absorption needs a second material and often results in heating ie microwaves
transmitting happens when the wave goes through a material
reflection is when the second material sends the wave back
Refraction
waves change speed and direction
when it crosses a boundary it slows down
if it hits the boundary at angle then changes direction then its refrated
how much it refracts is determined by speed angle and density of the boundary