Q3W8 Human Eye

What does it mean if a material is transparent?

• It blocks all light.

• It lets all light pass through so you can see clearly.

• It allows some light to pass through, but not all.

• It reflects light like a mirror.

Which of the following is an example of an opaque material?

• Glass window

• Clear plastic wrap

• A wooden door

• A frosted glass window

If a material is translucent, what happens to light?

• All light is blocked.

• Light passes through clearly and without scattering.

• Some light passes through, but it is scattered.

• The material reflects all light like a mirror.

Which of these is an example of a translucent material?

• A notebook

• Wax paper

• Clear drinking glass

• Aluminum foil

How does light enter the human eye?

• Light bounces off objects and enters the eye through the retina.

• Light is absorbed by the cornea, and the pupil blocks it.

• Light enters the eye through the pupil and is focused by the lens.

• Light enters the eye through the iris, which creates images.

What part of the eye helps to focus light onto the retina?

• The cornea

• The iris

• The lens

• The pupil

What happens if there is no light?

• Objects are easier to see because there is no glare.

• Objects are harder to see because light helps us see them.

• Light is not needed to see objects.

• The eye creates light to see objects.

Which of the following is an example of a transparent material?

• A car windshield

• A mirror

• A cardboard box

• A curtain

Which of the following is an example of an opaque material?

• Clear plastic wrap

• Wax paper

• A brick wall

• A frosted window

Why is the pupil important for vision?

• It controls the amount of light that enters the eye.

• It reflects light back out of the eye.

• It is where images are created.

• It focuses light onto the retina.