Vocabulary-Eyes
What is the iris?`
The colored part of your eye
What is the pinnae?
The earflaps on each side of your head
What does it mean to see and hear?
We see and hear when our brain makes sense of messages that it gets from our eyes and ears.
What are the three parts of an ear?
The outer ear, the middle ear, and inner ear.
What is the pupil?
The opening in the central part of the iris: the black part
What is the eardrum?
The part of the ear that seperates the outer and middle ear
How does your brain receive messages from your eyes?
Light-sensitive cells send messages from the retina to the brain through the optic nerve.
Why do our ear sometimes "pop"?
The tube that connects the middle ear to the throat sometimes opens to let air in.
What is the retina?
The back of the eye
What are ossicles?
The three small bones in your inner ear.
Why are some people nearsighted?
Their eyeballs are too long and the image formed by the lens does not fall correctly onto the retina.
How does sound travel through your ears?
Sound waves cause your eardrum to vibrate, which cause the liquid in your cochlea to move and the hairs there to ripple.
What is the cornea?
A clear round layer of cells
What is the cochlea?
What is an optical illusion?
It is something that you think you see that is not really there.
What else do your ears do besides hear?
They help you keep your balance.