| A | B |
|---|
| optic nerve | carries signals generated by rods and cones to brain |
| pupil | partof eye that looks black |
| plane mirror | produces a virtual and upright image |
| pigments | colored substances used to color other materials |
| primary colors of light | red, green, blue |
| telescope | used to collect and focus light from distant objects |
| refraction | bending of light rays as they enter a new medium |
| mirage | image of a distant object caused by refraction |
| virtual image | produced by concave lens because light rays never meet |
| secondary color | two primary colors of light combine in equal amounts |
| retina | made of light sensitive cells called rods and cones |
| diffuse reflection | parallel rays of light hit a rough or bumpy surface |
| iris | colored ring of muscle that controls size of the pupil |
| concave mirror | surface of a mirror curves inward |
| lens | curved piece of glass used to refract light |
| cornea | transparent front surface of eye |
| regular reflection | caused when parallel rays of light hit a smooth surface |
