Electromagnetic (EM) Waves (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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Practise the cards
15 cards from this deck
Type of wave that EM waves are
Type of wave that EM waves are
Transverse waves
What EM waves transfer from source to absorber
What EM waves transfer from source to absorber
Energy
Speed of all EM waves in vacuum
Speed of all EM waves in vacuum
m/s
Do EM waves need a medium to travel?
Do EM waves need a medium to travel?
No
Part of EM spectrum detected by human eye
Part of EM spectrum detected by human eye
Visible light
Visible spectrum order: longest to shortest wavelength
Visible spectrum order: longest to shortest wavelength
Red, orange, yellow, green, blue, indigo, violet
Use of radio waves
Use of radio waves
Radio and TV signal transmission
What radio waves reflect off to travel long distances
What radio waves reflect off to travel long distances
Ionosphere
Why microwaves heat food
Why microwaves heat food
Water molecules absorb energy, increasing temperature
Use of microwaves in communication
Use of microwaves in communication
Satellite communication
Use of infrared cameras in buildings
Use of infrared cameras in buildings
Detecting heat losses
Use of visible light in communication
Use of visible light in communication
Communication using fibre optics
Medical imaging use of X-rays
Medical imaging use of X-rays
Visualise broken bones
Medical use of gamma rays
Medical use of gamma rays
Detect cancer
As wavelength decreases in EM waves, frequency...
As wavelength decreases in EM waves, frequency...
Increases