Wave behaviour at boundaries (Edexcel GCSE Physics Combined Science): Flashcards
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Practise the cards
12 cards from this deck
Boundary (in wave context)
Boundary (in wave context)
Interface between two different materials
Absorption of waves
Absorption of waves
Waves absorbed by material, energy transferred to it
Where does energy go when a wave is absorbed?
Where does energy go when a wave is absorbed?
Transferred to material's thermal energy store (heating)
Reflection of waves
Reflection of waves
Waves bounce back from boundary between materials
Angle of incidence vs angle of reflection
Angle of incidence vs angle of reflection
Equal
Transmission of waves
Transmission of waves
Waves pass through the second material
Refraction
Refraction
Change in direction when waves pass through a material
What causes refraction?
What causes refraction?
Wave changes speed when entering new material
Use of refraction in lenses
Use of refraction in lenses
To focus light (e.g., glasses, camera lenses)
Use of refraction in communication
Use of refraction in communication
Fibre optics to transmit data
How does wavelength affect wave behaviour at boundaries?
How does wavelength affect wave behaviour at boundaries?
Shorter wavelengths more likely to be reflected
How does material density affect wave behaviour?
How does material density affect wave behaviour?
Denser materials may absorb or refract more energy