waves knowledge organiser

waves knowledge organiser

1. you need light to reflect from an object for you to see it

   • when light is reflecting from a mirror the angle of incidence it is equal to the angle of reflection. this is the law.

2. key terms

   • incidence ray
     • the ray of light that hits the mirror or glass block from the ray box
   • reflected ray
     • the ray of light that reflects off the mirror
   • normal line
     • imaginary line at 90 degrees to the mirror
   • angle of reflection
     • the angle between the normal and reflected ray
   • angle of incidence
     • the angle between the normal and the incidence ray
   • refraction
     • when light changes direction as it enters or leaves a different medium
   • emergentray
     • the ray of light that leaves the glass block