2.14 The Human Eye

What is the purpose of pupils in eyes?

• To control the amount of light that enters.

• To enhance color perception.
• To protect the eye from foreign objects.
• To focus light onto the retina.

What is the purpose of the iris in eyes?

• The iris helps in focusing light onto the retina.
• The iris controls the size of the pupil, which regulates light entry into the eye.

• The iris protects the eye from foreign objects.
• The iris is responsible for color perception in the eye.

Select all that apply.

Light enters the lens of the eye and

• converges

• diverges

• refracts

• reflects

• explodes

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NGSS.MS-PS4-2

Which part is responsible for converting light into electrical impulses that are sent to the brain?

• Iris
• Retina
• Cornea
• Lens

Select all that apply.

Images created on the retina are

• real

• virtual

• upright

• inverted

• imaginary

We can see objects of different sizes and distances clearly because

• the eye changes the shape of the lens

• the eye changes the size of the lens

• the eye moves retina around

• the iris changes color

Near-sightedness can be corrected with

• converging lenses

• diverging lenses

• closing your eyes

• converging mirrors

Far-sightedness can be corrected with

• converging lenses

• diverging lenses

• closing your eyes

• converging mirrors