Eye

Question 1

Controls the amount of light entering the eye

Answer 1

Iris

Question 2

Protects the lens and starts to ‘bend’ light

Answer 2

Cornea

Question 3

Allows light to enter the eye

Answer 3

Pupil

Question 4

Focuses light onto retina

Answer 4

Lens

Question 5

Contains rods and cone cells to detect light and colour

Answer 5

Retina

Question 6

Sends images to the brain

Answer 6

Optic nerve

Question 7

Why do we have a blind spot

Answer 7

The optic disk is a blind spot which doesn’t contain rods or cones (light sensitive cells). The image disappears when light is focused on the optic disk

Question 8

What does 20/20 vision mean

Answer 8

Means you have perfect vision. Yo can see up to 20 meters away from you clearly

Question 9

When parallel rays pass through the lens they …

Answer 9

Convert

Question 10

When parallel lines pass though the bent lens they …

Answer 10

Diverge

Question 11

When lines convert the type of lens is a …

Answer 11

Convex lens

Question 12

When lines diverge the type of lens is a …

Answer 12

Concave lens