Electromagnetic (EM) Waves (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards
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What type of wave are EM waves?
What type of wave are EM waves?
Transverse waves
What do EM waves transfer from source to absorber?
What do EM waves transfer from source to absorber?
Energy
Speed of all EM waves in a vacuum
Speed of all EM waves in a vacuum
m/s
Part of EM spectrum detected by human eye
Part of EM spectrum detected by human eye
Visible light
EM wave with longest wavelength
EM wave with longest wavelength
Radio waves
EM wave with shortest wavelength
EM wave with shortest wavelength
Gamma rays
As wavelength decreases, frequency does what?
As wavelength decreases, frequency does what?
Increases
As frequency increases, wave energy does what?
As frequency increases, wave energy does what?
Increases
Main use of radio waves
Main use of radio waves
Transmission of radio and TV signals
Why do microwaves heat food?
Why do microwaves heat food?
Water molecules absorb microwave energy
Use of microwaves in space communication
Use of microwaves in space communication
Satellite communication
Use of infrared cameras
Use of infrared cameras
Check buildings for heat losses
Use of visible light in communication
Use of visible light in communication
Fibre optics
Medical use of X-rays
Medical use of X-rays
Visualize broken bones
Property of X-rays and gamma rays
Property of X-rays and gamma rays
Very penetrating