Light and Refraction Quiz

What is refraction?

• A hits an opaque object

• B bounces off a mirror

• D changes direction as it goes from one substance into another

• C is scattered unevenly by a rough surface

Why does light refract?

• D light reflects inside transparent materials

• C light stops when it goes from air to glass or water

• B light slows down when it goes from air to glass or water

• A light speeds up when it goes from air to glass or water

What happens to light when it enters a more dense medium?

• D It reflects inside the medium

• C It stops

• B It slows down

• A It speeds up

What happens to light when it enters a less dense medium?

• D It reflects inside the medium

• C It stops

• B It slows down

• A It speeds up

What is the angle of incidence?

• A the angle between the incident ray and the normal

• B the angle between the reflected ray and the normal

• D a light ray that is reflected from a surface

• C a light ray that strikes a surface

What is the angle of reflection?

• D a light ray that is reflected from a surface

• C a light ray that strikes a surface

• B the angle between the reflected ray and the normal

• A the angle between the incident ray and the normal

What is a plane mirror?

• D a mirror with a transparent surface

• C a mirror with a rough surface

• B a mirror with a curved surface

• A mirror with a flat surface

What is an image?

• B the appearance of an object in a rough surface

• A the appearance of an object in a smooth shiny surface

• C the reflection of an object in a transparent surface

• D the reflection of an object in a curved surface

What is an incident ray?

• C a line perpendicular (90º) to the surface where the incident ray strikes

• B a light ray that is reflected from a surface

• A a light ray that strikes a surface

• D the angle between the incident ray and the normal

What is a reflected ray?

• D the angle between the reflected ray and the normal

• C a line perpendicular (90º) to the surface where the incident ray strikes

• B a light ray that is reflected from a surface

• A a light ray that strikes a surface