Eyes

Question 1

Light enters the eye through the

Answer 1

Cornea

Question 2

…. And ….. Focus the light onto the …

Answer 2

Cornea and eye lens

Light into to retina

Question 3

What controls the size of the pupil and what does this do ?

Answer 3

Iris controls the pupil

This controls the amount of light getting in

Question 4

What controls the thickness of the lens

Answer 4

Ciliary muscles

Question 5

Range of human vision is

Answer 5

25cm to infinity

Question 6

Short sight is when

Answer 6

Eye cannot focus on distant object as the image is formed in front of the retina

Question 7

Short sight caused by (2)

Answer 7

Eye ball being too long

Eye lender being too powerful

Question 8

Short sight Can be corrected by

Answer 8

Diverging lens

Question 9

Long sight is when

Answer 9

Eye cannot focus on near objects ad image is formed behind the retina

Question 10

Long sight is caused by (2)

Answer 10

Eyeball being too short

Eye lens being too weak

Question 11

Short sight can be corrected

Answer 11

With a converging lens