Understanding Light and Vision

Which of the following best describes how we are able to see an object?

• Light is absorbed by the object and then enters our eyes.

• Light reflects off the object and then enters our eyes.

• The object emits its own light that enters our eyes.

• The object blocks light, allowing us to see it.

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

What happens to light when it hits a smooth, shiny surface like a mirror?

• It is absorbed by the surface.

• It is scattered in all directions.

• It is reflected in a specific direction.

• It passes through the surface.

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NGSS.MS-PS4-2

Which of the following is necessary for an object to be visible to the human eye?

• The object must be very large.

• The object must be in motion.

• Light must reflect off the object and enter the eye.

• The object must be colorful.

If you are in a completely dark room with no light source, why can't you see objects around you?

• Objects are too small to be seen.

• There is no light to reflect off the objects and into your eyes.

• The objects are not colorful enough.

• Your eyes are closed.

How does light behave when it travels from air into water?

• It speeds up and continues in a straight line.

• It slows down and bends.

• It stops completely.

• It speeds up and bends.

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NGSS.MS-PS4-2

Which of the following statements is true about light and vision?

• Light is not necessary for vision.

• Light must reflect off an object for it to be seen.

• Vision is possible without any light.

• Light is absorbed by the eyes to create vision.

What is the role of the eye in seeing objects?

• The eye emits light to illuminate objects.

• The eye reflects light to make objects visible.

• The eye captures light that reflects off objects.

• The eye absorbs objects to make them visible.

Why do we see a shadow when an object blocks light?

• The object absorbs all the light.

• The object reflects all the light.

• The object blocks the light, preventing it from reaching a surface.

• The object emits its own light.

What happens to light when it passes through a transparent material like glass?

• It is completely absorbed by the material.

• It is reflected back.

• It passes through with little change in direction.

• It is scattered in all directions.

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NGSS.MS-PS4-2

Which of the following best explains why we cannot see through opaque objects?

• Opaque objects reflect all light.

• Opaque objects absorb all light.

• Opaque objects allow all light to pass through.

• Opaque objects emit their own light.

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NGSS.MS-PS4-2