What is refraction?

• The bending of light as it passes from one medium to another

• The bouncing of light off a surface

• The spreading of light waves

• The absorption of light by a medium

How does a ray of light behave when it moves from air into water?

• It continues in a straight line without changing direction

• It bends away from the normal

• It bends towards the normal

• It reflects back into the air

How does the refractive index of a medium affect the amount of refraction?

• A higher refractive index means less refraction

• A higher refractive index means more refraction

• The refractive index does not affect refraction

• A lower refractive index means more refraction

What is interference in the context of waves?

• The bending of waves around obstacles

• The superposition of two or more waves resulting in a new wave pattern

• The reflection of waves off a surface

• The absorption of waves by a medium

How can the brightness of a light wave be classified?

• By its frequency

• By its amplitude

• By its speed

• By its wavelength

What is reflection?

• The bending of light as it passes through a medium

• The bouncing of light off a surface

• The spreading of light waves

• The absorption of light by a medium

In a simulation of reflection, how does the angle of incidence compare to the angle of reflection?

• The angle of incidence is always greater

• The angle of incidence is always less

• The angle of incidence is equal to the angle of reflection

• The angle of incidence is unrelated to the angle of reflection

How does the path of light determine which objects we can see?

• Light must be absorbed by an object for it to be visible

• Light must be reflected off an object and enter our eyes for it to be visible

• Light must pass through an object for it to be visible

• Light must be emitted by an object for it to be visible