Refraction of Light

Refraction is

• the bending of light as it passes into new medium and changes speed

• the bending of light around or through a barrier and changes speed

• when light bounces off a boundary and changes speed

• the bending of light as it crosses a boundary into a new medium with the same speed

Reflection is

• the bending of light as it passes into new medium and changes speed

• the bending of light around or through a barrier and changes speed

• when light bounces off a boundary and changes direction

• the bending of light as it crosses a boundary into a new medium with the same speed

Diffraction is

• the bending of light as it passes into new medium and changes speed

• the bending of light around or through a barrier and changes speed

• when light bounces off a boundary and changes direction

• the bending of light as it crosses a boundary into a new medium with the same speed

As light leaves air and enters water or glass it....

• gets faster and bends towards the normal

• gets faster and bends away from the normal

• gets slower and bends towards the normal

• gets slower and bends away from the normal

This diagram illustrates that...

• more dense media cause light to get slower and bend towards the normal.

• more dense media cause light to get faster and bend towards the normal.

• more dense media cause light to get slower and bend away from the normal.

• more dense media cause light to get faster and bend away from the normal.

Which medium does light travel at the greatest speed?

• flint glass

• water

• diamond

• cubic zirconium

The index of refraction is...

• represented by the letter "n"

• represents the speed of light in a medium

• always less than one (a decimal number)

• all of these

When looking at a refraction ray diagram,

• the larger angle belongs to the more dense and faster medium

• the larger angle belongs to the less dense and faster medium

• the larger angle belongs to the less dense and slower medium

• the larger angle belongs to the more dense and slower medium

This picture illustrates ...

• light refracts away from the normal when leaving water and entering air

• light refracts towards the normal when leaving water and entering air

• light does not refract when leaving water and entering air

• light continues to travel in a straight line across the boundary between water and air

Polarized light is ...

• light that only vibrates in one plane

• light that is only one color

• light that has a positive and a negative side

• light from the North or South Poles