EM Waves & Matter (AQA GCSE Physics): Flashcards
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12 cards from this deck
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Practise the cards
12 cards from this deck
4 interactions when EM waves enter a new medium
4 interactions when EM waves enter a new medium
Transmission, absorption, reflection, refraction
Transmission (EM waves)
Transmission (EM waves)
Waves pass through the new medium
Absorption (EM waves)
Absorption (EM waves)
Waves absorbed, energy converted to heat
Reflection (EM waves)
Reflection (EM waves)
Waves bounce back from surface of medium
Refraction (EM waves)
Refraction (EM waves)
Waves change direction due to change in speed
How glass interacts with visible light
How glass interacts with visible light
Transmits and refracts it
How glass interacts with UV radiation
How glass interacts with UV radiation
Absorbs it
How glass interacts with IR radiation
How glass interacts with IR radiation
Reflects it
Why refraction occurs
Why refraction occurs
Speed of EM waves changes in different materials
EM wave speed: vacuum vs materials
EM wave speed: vacuum vs materials
Same speed in vacuum, slow down in materials
Materials that slow down EM waves
Materials that slow down EM waves
Water, glass, oil
Why wavefront bends entering new medium
Why wavefront bends entering new medium
Different parts enter at different times, speed changes