The Electromagnetic Spectrum (Edexcel GCSE Physics): Flashcards
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Type of EM waves
Type of EM waves
Transverse waves
What EM waves transfer
What EM waves transfer
Energy from source to absorber
Speed of EM waves in vacuum
Speed of EM waves in vacuum
m/s
Do EM waves need a medium?
Do EM waves need a medium?
No, they can travel through vacuum
Part of EM spectrum humans can see
Part of EM spectrum humans can see
Visible light
Type of spectrum for EM waves
Type of spectrum for EM waves
Continuous spectrum
EM spectrum order (increasing freq.)
EM spectrum order (increasing freq.)
Radio, Micro, IR, Vis, UV, X-ray, Gamma
Visible light order (low to high freq.)
Visible light order (low to high freq.)
Red, Orange, Yellow, Green, Blue, Indigo, Violet
As wavelength decreases, frequency...
As wavelength decreases, frequency...
Increases
As frequency increases, energy...
As frequency increases, energy...
Increases
Radio waves use
Radio waves use
Transmission of radio & TV signals
Microwaves use in heating food
Microwaves use in heating food
Water molecules absorb energy, increasing temperature
Microwaves use in space comms
Microwaves use in space comms
Communicate with satellites
Infrared use in buildings
Infrared use in buildings
Infrared cameras detect heat losses
X-rays use in medicine
X-rays use in medicine
Medical imaging to visualize broken bones