Wave behaviour at boundaries (Edexcel GCSE Physics): Flashcards
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Practise the cards
13 cards from this deck
3 wave behaviours at a boundary
3 wave behaviours at a boundary
Absorption, reflection, transmission
Wave absorption
Wave absorption
Wave transfers energy to the second material
Where absorbed wave energy goes
Where absorbed wave energy goes
To material's thermal energy store (causes heating)
Wave reflection
Wave reflection
Wave bounces back from the boundary
Law of reflection
Law of reflection
Angle of incidence angle of reflection
How echoes form
How echoes form
Sound waves reflect off hard surfaces
Wave transmission
Wave transmission
Waves pass through the second material
Refraction
Refraction
Change in direction when wave is transmitted
Why refraction happens
Why refraction happens
Wave changes speed in new material, causing it to bend
Refraction use: lenses
Refraction use: lenses
To focus light
Refraction use: communication
Refraction use: communication
Fibre optics transmit data
Effect of wavelength at boundaries
Effect of wavelength at boundaries
Shorter wavelengths more likely to be reflected
Effect of material density on waves
Effect of material density on waves
Denser materials may absorb or refract more energy