Waves in Air, Fluids & Solids (AQA GCSE Physics): Flashcards

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Waves and boundaries
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Boundary (waves)

Place where two materials meet

4 effects at boundaries

Reflected, refracted, transmitted, absorbed

Reflected (boundary effect)

Wave bounces back

Refracted (boundary effect)

Wave bends as it passes through

Transmitted (boundary effect)

Wave passes straight through

Absorbed (boundary effect)

Wave taken in, doesn't pass through

Law of reflection

Angle of incidence = angle of reflection (i=ri = r)

Incident ray

Wave coming towards the surface

Reflected ray

Wave bouncing off the surface

Normal (wave reflection)

Imaginary line at 90°90° to surface

Refraction

Bending of wave between different materials

Ray entering denser material

Bends towards the normal

Ray leaving denser material

Bends away from the normal

Wave hitting at 90°90° to surface

No bending, continues straight through

Angles in reflection measured from

The normal line

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