Waves Flashcards
What’s the symbol for frequency on the formula sheet?
f
What’s the unit for frequency ?
Hz
(Hertz)
What’s the symbol for period on the formula sheet?
T
What’s the unit for period?
s
How do you work out the period of a wave?
It’s the time it takes for 1 wave to pass
What’s the symbol for wavelength on the formula sheet?
λ
(lambda)
What’s the unit for wavelength?
m
How do you work out the wavelength of a wave?
It’s the length of one wave
What’s the amplitude of a wave?
The maximum height from the centre of the wave
Or (max-min)/2
NOTE - the amplitude is NOT on the formula sheet - you just measure it off a diagram
What is the order of the parts of the electromagnetic spectrum (from longest wavelength to shortest)?
Radio waves (longest wavelength)
Microwaves
Infrared
Visible Light
Ultraviolet
X-rays
Gamma rays (shortest wavelength)
Remember RaMILUXY
What’s the speed of an X-ray?
Speed of light (on data sheet)
3 x 10^8 ms^-1
Which part of the electromagnetic spectrum diffracts the most?
Radio waves
(longer wavelengths diffracts more than shorter wavelengths)