Light always travels in a _______________line.
straight
If all of the colors of the spectrum are absorbed by an object, that object is ________________.
black
The structure behind the pupil that refracts and focuses the light it receives is the ______________.
lens
_____________light is a mixture of colored lights.
White
Bending of light rays as they enter a new material is called _______________
refraction
What are the 6 colors of the spectrum in order?
Red, orange, yellow, green, blue, violet
The light-sensitive lining covering the inside of the eyeball is the ______________.
retina
The opening that lets light enter the eye is the ___________.
pupil
A material that does not allow light to pass through it is ________________.
opaque
A material that lets light pass straight through it is __________________.
transparent
The large bundle of fibers that carries the message of what the eye has seen to the brain is the ______________.
optic nerve
Many nocturnal animals have an extra layer of reflecting cells behind the retina called the _____________.
tapetum
This is a ______________ lens.
convex
This is a _______________ lens.
concave
The transparent layer covering the front of the eyeball is the __________________.
cornea
If a material lets light pass through it, but you cannot see objects on the other side of it, that material is __________
translucent
The electric light bulb was invented by ________________
Thomas Edison
The muscles that regulate the size of the pupil are found in the _____________.
iris
The type of vision when both eyes work together to produce an image of the same object is _________________.
monocular vision