Light Pre-assessment

Which word best describes how light reacts when passing from air through water?

• refraction

• reflection

• reconstroction

• retraction

A student placed a pencil in a cup of water.  The pencil appears broken because light-

• always travels in a straight line
• bends when it passes through water
• makes the water in the glass evaporate
• reflects the pencil on the water's surface

We see shadows because light travels in a __________________ line.

• curved
• straight
• rainbow
• bent

Light bouncing off a mirror is an example of...

• Refraction
• Reflection

What happens to light in a prism

• The light is refracted.

• The light is reflected

• The light is absorbed

• The light does not change at all.

The illustration shows a light ray striking an object.
In the illustration, the light ray striking the object is-

• absorbed
• stopped
• reflected
• refracted

Students often use a hand lens to make small objects appear larger. A hand lens makes objects appear larger because the lens-

• increases the light’s strength

• changes the color of the light

• bends light passing through it

• converts light energy to heat

Which of the following reflects light to produce an image?

• 
• 
• 
• 

Which of these best explains why a student can see her reflection in a computer monitor when the monitor is turned off?

• Black objects absorb most of the light striking them.

• The glass allows light to be transmitted through it.

• Smooth, shiny objects reflect a great amount of light.

• Computers produce light when they are being used.

A material that reflects light and can cast a shadow is.

• opaque

• transparent

• translucent

• solid