Electromagnetic (EM) Waves (AQA GCSE Physics Combined Science): Flashcards
📚Flashcards
Practise the cards
15 cards from this deck
ShowHide
Practise the cards
15 cards from this deck
Type of wave: EM waves
Type of wave: EM waves
Transverse
Speed of all EM waves in vacuum
Speed of all EM waves in vacuum
m/s
Do EM waves need a medium?
Do EM waves need a medium?
No
Part of EM spectrum human eyes detect
Part of EM spectrum human eyes detect
Visible light
Colour with longest wavelength (visible)
Colour with longest wavelength (visible)
Red
Colour with shortest wavelength (visible)
Colour with shortest wavelength (visible)
Violet
Radio waves: main use
Radio waves: main use
Radio & TV transmission
Radio waves: ionosphere effect
Radio waves: ionosphere effect
Reflect off it
Microwaves: why heat food?
Microwaves: why heat food?
Water molecules absorb energy
Microwaves: communication use
Microwaves: communication use
Satellites
Infrared cameras use
Infrared cameras use
Check heat losses in buildings
Visible light: communication use
Visible light: communication use
Fibre optics
X-rays: medical use
X-rays: medical use
Visualise broken bones
Gamma rays: medical use
Gamma rays: medical use
Detect & treat cancer
As wavelength decreases, frequency...
As wavelength decreases, frequency...
Increases