Angle of Incidence - Angle the light ray going in makes with the normal, Angle of reflection - Angle the light ray that bounces off the mirror makes with the normal, Transverse - Light Is this type of wave, Vacuum - Light can travel through this, Reflection - When light bounces off a surface in a predictable way, Refraction - When light enters a medium of different density, Medium - Something a wave travels through, Towards the normal - When light slows down it bends in this direction, Away from the normal - When light speeds up it bends in this direction, Normal line - Reference line at 90 degrees to the surface, Law of reflection - angle of incidence = angle of reflection, Protractor - Use to measure angles, Lens - Use to make the light beam from the ray box nice and narrow, Longitudinal - Sound is this type of wave, Electric and magnetic fields - Light travels via these, 300,000,000 m/s - Speed of light, v = f x w - Wave speed equation, Time period - Time for 1 complete wave cycle, Frequency - Number of wave cycles per second, Energy - Light transfers this, Matter - Light does not transfer this,

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