Electromagnetic spectrum (Edexcel GCSE Physics Combined Science): Flashcards
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Practise the cards
15 cards from this deck
What type of wave are EM waves?
What type of wave are EM waves?
Transverse waves
What do EM waves transfer?
What do EM waves transfer?
Energy from source to absorber
Speed of all EM waves in a vacuum
Speed of all EM waves in a vacuum
The same speed
Part of EM spectrum humans can see
Part of EM spectrum humans can see
Visible light
Frequency & energy relationship
Frequency & energy relationship
Higher frequency = more energy
Why are high frequency waves dangerous?
Why are high frequency waves dangerous?
Transfer more energy
Cause of EM wave refraction
Cause of EM wave refraction
Different speeds in different materials
What is dispersion?
What is dispersion?
Spreading out of different wavelengths
4 interactions at boundaries
4 interactions at boundaries
Absorbed, transmitted, refracted, reflected
Radio waves wavelength & frequency
Radio waves wavelength & frequency
Longest wavelength, lowest frequency
How is infrared felt?
How is infrared felt?
As heat
UV effect on body
UV effect on body
Damages skin and eyes
Use of X-rays
Use of X-rays
Medical imaging
Gamma rays frequency & danger level
Gamma rays frequency & danger level
Highest frequency, very dangerous
Uses of microwaves
Uses of microwaves
Communication and cooking