Relates to REFLECTION Only: Light stays in the same material, Light bounces off a surface, Light stays travelling at the same speed, Incident angle = Reflected angle, This process allows mirrors to work, Relates to both REFLECTION and REFRACTION: Light changes direction, A 'normal' line is drawn: 90º to surface, Draw rays as straight lines with arrows, Relates to REFRACTION Only: Light enters a new material, Light speeds up/ slows down, Incident angle does not = refracted angle, Cannot happen if an object is opaque, Light slows down and refracts towards normal, No direction change for light along the normal, This process allows lenses to focus light, Relates to NEITHER REFLECTION or REFRACTION: Light is absorbed, Cannot happen if an object is transparent,

Reflection and Refraction Categorisation

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