light

• define reflection


  a wave that passes between two substances
• state the two laws of reflection


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

  30 degrees
• what is the ray that hits the mirror called


  incident ray
• true or false you cannot see an imagine using a rough surface like paper

  true
• what is a flat mirror called

  plane mirror
• what is refraction


  the change of wave in the direction of a wave passing from one medium to another
• what happens when light hits a glass block at an angle?

  the change in speed causes a change in direction
• a light ray travels from a more dense medium to a less dense medium will the light ray bend towards the normal or away

  away from normal
• explain why you can see a reflection of yourself in a mirror but not in a piece of cardboard

  cardboard has a rough surface so the light is reflected in lots of different directions