The Electromagnetic Spectrum (Leaving Cert Physics): Flashcards
📚Flashcards
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15 cards from this deck
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Practise the cards
15 cards from this deck
Speed of EM waves in vacuum
Speed of EM waves in vacuum
m/s
Wave equation for EM radiation
Wave equation for EM radiation
EM spectrum order (low to high frequency)
EM spectrum order (low to high frequency)
Radio→Microwave→IR→Visible→UV→X-ray→Gamma
As frequency increases, wavelength...
As frequency increases, wavelength...
Decreases
EM wave type with longest wavelength
EM wave type with longest wavelength
Radio waves
How microwaves heat food
How microwaves heat food
Make water molecules vibrate, producing heat
Nickname for infrared radiation
Nickname for infrared radiation
Heat radiation
Visible light wavelength range
Visible light wavelength range
380-750 nanometres (approx.)
Longest wavelength visible light colour
Longest wavelength visible light colour
Red light
Shortest wavelength visible light colour
Shortest wavelength visible light colour
Violet light
UV effect on certain substances
UV effect on certain substances
Causes fluorescence (glow)
Where ionising radiation begins in spectrum
Where ionising radiation begins in spectrum
Ultraviolet (UV) radiation
What X-rays pass through
What X-rays pass through
Soft tissues
What absorbs X-rays
What absorbs X-rays
Denser materials (bones, metals)
Most energetic EM radiation
Most energetic EM radiation
Gamma rays