12.1) Copy the table below. Use words from the list to fill the first column of your table.
You may use cach word once, more than once, or not at all.
opaque     image      transparent       non-luminous      shadow        mirror

12.2) A student drew this diagram to show how a ray of light is reflected by a flat mirror.

Make a copy of the diagram.
a: On your copy of the diagram draw the reflected ray Label the mirror, the incident ray and the reflected ray.
b: Draw the normal to the surface of the mirror at the point where the ray is reflected. Label the normal.
c: Mark the angle of incidence and the angle of reflection. Label them I and R.
d: Calculate the value of the angle of incidence.
e: Use the law of reflection to determine the value of the angle of reflection.

12.3) The diagram shows a ray of light passing from air into a glass block.

a: Whal name is given to the bending of light when it travels from one material into another?
b: Does the ray bend towards the normal or away from the normal when it enters glass from air?
c: State how a ray of light can travel from air into glass without bending Illustrate your answer with a diagram.
d: Draw a diagram to show how a ray of light bends when it travels from glass into air.

12.4) When white light passes through a prism, it is split up into a spectrum of different colours.
a: What name is given to the forming of a spectrum by a prism?
b: Which colour of the spectrum is refracted most by a prism?
c: Which colour lies between yellow and blue in the spectrum of white light?
d: A student shines a mixture of red and blue light onto a blue toy car.
What colour will the car appear to have? Explain your answer.