| A | B |
|---|
| light | a form of energy that travels in a straight line |
| photon | name given to light energy as electrons jump between orbits |
| sunlight | natural light/primary source of light |
| artificial light | light not from the sun |
| electromagnetic spectrum | different wavelengths of energy created by electric/magnetic fields of earth |
| white light | all colors of visible light |
| visible light | light that can be seen by the human eye |
| dangerous light rays | ultra violet rays; x-rays; gamma rays; cosmic rays; micro waves |
| reflection | light can bounce off one object to another |
| refraction | light rays can bend |
| opaque | will not allow light to pass through |
| translucent | allows some light to pass through |
| transparent | allows all light to pass through |
| incident ray | ray of incoming light |
| reflected ray | ray of outgoing light |
| angle of incidence | angle between the incident ray and a reflecting surface |
| angle of reflection | angle between the reflected ray and a reflecting surface |
| < of i = < of r | the angle of incidence equals the angle of reflection |
| prism | triangular glass or plastic object that bends and disperses light |
| dispersion | white light bent and separated into colors of the visible spectrum (rainbow colors) |
