Wave Properties PFA #4

Why does the straw appear to be bent?

• light is reflected

• light is absorbed

• light is turned

• light is refracted

What do we call a material that light can travel through?

• air

• water

• medium

• pathway

What is a repeating disturbance or vibration that transfers or moves energy from place to place?  

• Medium
• Wave
• Compression
• Rarefaction

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

• absorbed
• stopped
• reflected
• refracted

Why does the lower part of the child appear so much different in size from the upper part?

• The light rays that travel through water and then into air are refracted.
• The light rays that travel through water and then into air are enlarged.
• The light rays that travel through air and then into water are reflected.
• The light rays that travel through air and then into water are reduced.

Glass has a _____________ index of refraction than air.

• Equal
• Greater
• Less
• Impossible to say

What is the best description of an opaque material?

• no light passes through the material

• some light passes through the material

• all light passes through the material

What is the best description of a transparent material?

• no light passes through the material

• some light passes through the material

• all light passes through the material

What is the best description of a translucent material?

• no light passes through the material

• some light passes through the material

• all light passes through the material

Which pictures shows a translucent image?

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