EM Waves Flashcards
What is the EM spectrum
A continuous range of wavelengths/frequencies of electromagnetic waves/radiation (with different uses)
EM waves
Radio waves
Micro waves
Infrared
Visible Light
Ultraviolet
X-Rays
Gamma Rays
Uses of radio waves
1 Broadcasting on radio or TV
2 communication and satellite transmission
3 Radar
Uses of Microwaves
1 Microwave ovens(heating foods)
2 Satellite communication
Uses of Infrared
1 heating
2 thermal imaging
3 remote controls
visible light
light detectable by the human eye
uses of ultraviolet
1 fluorescent lights
2 sterilisation
3 verifying money, ID, passports
uses of X-rays
1 medical imaging (X-ray radiology)
2 security screening
uses of Gamma Rays
1 medical imaging
2 cancer treatment
dangers of radio waves
heat up body tissue
dangers of micro waves
heat up body tissue (specifically water)
burns
dangers of infrared
heating
Eye damage
dangers of ultraviolet
skin damage(sun burns)
eye damage(development of cataracts)
increase risk of skin cancer
wear sun cream when very sunny
dangers of x-rays
Damage cells
Ionising radiation can increases cancer risk
Acute radiation sickness
can be blocked by a lead screen
dangers of gamma rays
Damage cells
Ionising radiation can increases cancer risk
Acute radiation sickness
can be blocked by a lead screen or sometimes concrete
