6
8
T
h
i
n
k
!
Read the text, then draw the image on the retina. How do we see it?
7
Write the names of the parts of the eye.
a)
The
is a small hole that lets light into the eye.
b)
The
is an oval-shaped structure that focuses light on the retina.
c)
The
transmits information from the retina to the brain.
d)
The
surrounds the pupil. It’s made of very small muscles.
e)
The
detects light and colours. It is made of layers of nerve tissue.
f)
The
covers and protects the iris and the pupil.
cornea
●
pupil
●
iris
●
lens
●
optic nerve
●
retina
Light travels into the eye through the pupil. Then it passes through the lens. The lens projects an
upside down image onto the retina. This information is sent to the brain through the optic nerve.
9
Complete the table with parts of the eye and the ear.
Parts of the eye
Parts of the ear
