Light Review

What best explains why people see grass as green?

• The pigment in the grass reflects only green light.

• The grass absorbs green light from the Sun.

• Green light changes direction when it hits the grass.

• The grass is opaque and does not allow green light through.

Which is the best definition of refraction?

• when a light wave bends as it strikes an object

• when a light wave bounces off an object

• when a light wave curves through a convex lens

• when a light wave strikes a prism

How does light travel?

• in a straight line

• in a curved path

• very slowly

Light strikes an object and some of it reflects off of it therefore....

• an object can be seen

• light is refracted

• light is absorbed

• only red light is seen

Because an object reflects red light...

• the object does not appear red

• the object appears red

• the object absorbs red light

• the object appears blue

Bananas appear yellow because the yellow is...

• absorbed

• reflected

• refracted

Glass, water, and clear plastic allow light to pass through them. Which word best describes these objects?

• translucent

• refractive

• transparent

• opaque

Which best describes what happens when light reaches translucent materials?

• All of the light passes through

• Some of the light passes through and some bounces off in different directions

• The light is reflected at a 90 degree angle.

• Some light bounces off in different directions, while some light is absorbed.

What do we discover by sending light rays through a prism?

• That prisms are transparent.

• The white light gets brighter.

• The white light gets dimmer.

• The white light is made up of colors.

How does light behave when it strikes opaque materials?

• The light is absorbed.

• The light is reflected.

• The light is refracted.