Refraction through a rectangular block (including wave front diagrams) | Combined science

Starter quiz

In a wavefront diagram, what does a wavefront show?
- a beam of light
- a peak of a wave ✓
- the front of a wave
- the frequency of a wave
- the direction of wave travel
Which statement about light is correct?
- Light cannot change direction.
- A ray box produces a single ray of light.
- Light can only reflect from shiny surfaces.
- All types of wave can be reflected. ✓
Match the terms with their meanings.
- absorbed
  
  ⇔
  
  loses its brightness as it passes through the object ✓
- transmitted
  
  ⇔
  
  passes through the object ✓
- reflected
  
  ⇔
  
  bounces off the surface of the object ✓
In a ray diagram, the ray that approaches a surface or boundary is called the ______ ray.
- 'incident' ✓
This ray diagram represents a light wave hitting a mirror. Which diagram shows the normal line drawn correctly (as a dashed line)?
The ray diagram represents a light wave reflecting from a mirror. A student has placed a protractor over the diagram. What is the angle of incidence?
- 27°
- 63° ✓
- 77°
- 117°
- 123°