unit 3 test review

Sebastian places a pencil in a glass of water and observes that the pencil appears to be broken. Which of these provides the bestexplanation for why the pencil appears broken?

• the pencil absorbs all the light rays that hit it.

• Water reflects light rays away from the pencil.

• Light rays are bent by the water in the glass.

• The surface of the water reflects light rays

Caleb is sitting near the window on a sunny day. When he closes the curtain, the room becomes darker. What property of the curtain allows it to make the room darker?

• the curtain absorbs light

• the curtain is brightly colored

• the curtain folds easily

• the curtain is rectangular in shape

The illustration provided shows the path of light leaving a laser pointer. At what point is the light from the laser being reflected?

• A

• B

• C

• D

Light travels in straight lines until reflected or refracted by another object. Which illustration best shows light being reflected?

• 
• 
• 
• 

Which of the following is the best example of an object absorbing light?

• a black sweater in the sun

• a clean window in the sun

• a curved mirror in the sun

• a long shadow in the sun

Light rays from any light source travel outward in all directions along a straight path until they hit something. Which of the following best represents what occurs when light rays hit a glass of water?

• The light rays will pass straight through air to water

• The water absorbs the light, and it will no longer be seen

• The light rays will bend at the boundary of air and water.

• The surface of the water will reflect the light of the water.

Which illustration best shows light being refracted?

• 
• 
• 
• 

Sydney points a laser at various objects in her bedroom. The illustration shows how the laser beam interacted with these objects. Which object refracted the laser beam?

• silver locket

• picture frame

• glass marble

• notebook

The diagram shows a periscope used to see objects that are behind or under a barrier. An image is provided. What makes it possible to see an object when looking through a periscope?

• It contains mirrors that reflect the object.

• It magnifies small objects so they can be seen

• It absorbs the light rays passing through it.

• It separates the light into different colors.

Which of the following is demonstrated when light bounces off of mirrors or shiny surfaces?

• scattering

• rafraction

• absorption

• reflection