Light Year 8 Formative Quiz

Which travels most quickly?

• water waves

• sound waves

• light waves

Light travels in

• circular lines

• straight lines

• around corners

The angle of incidence always equals what?

• The angle of reflection

• The angle of dispersion

• The angle of exodus

What type of reflection is seen in a mirror?

• specular reflection

• diffuse scattering

• normal

When materials are placed in the path of a light beam various things can happen. Which word describes materials that will not allow light through?

• opaque

• transparent

• translucent

• transmitter

Which of the following is luminous

• the moon

• a candle

• a mirror

• white paint

When an incident ray of light hits a water or glass surface, most of the light passes through the air-water interface and a little is reflected. Which of the four rays is the reflected ray?

• ray 3

• ray 2

• ray 4

• ray 1

The diagram shows what happens to a ray of light when it strikes the surface of a plane mirror. The vertical dotted line is at 90o to the surface of the mirror. Which statement is NOT true?

• angle 1 always equals angle 3

• angle 2 always equals angle 3

• angle 3 = angle of reflection

• angle 2 = angle of incidence

An instrument which enables us to see objects which are not in our direct line of sight is called

• microscope

• telescope

• kaleidoscope

• periscope

Which of the following statements is the correct reason we can see objects that are NOT luminous?

• Our eyes give out light

• They bend light into our eyes

• They reflect light into our eyes

• They shine light into our eyes