4. Are these light sources?
moon
water
mirror
These items are not light sources, instead they
are reflecting light from other sources.

5. How do we see?
 Light from a
luminous object
goes straight into
our eyes.
 Light from a
luminous object
reflects off a
non-luminous
object and into
our eyes.

9. Transparent objects allow you to see clearly
through them. Some examples are:

10. Translucent objects only let some light through
them. You cannot see clearly through a
translucent object. Some examples are:

11. Opaque objects do not let any light through them.
You cannot see through them. Some examples of
opaque objects are:

13. What colour is light?
• The white light we see is actually a mixture of
different colours. With a prism, we can
separate White light into its component
colours (red, orange, yellow, green, blue,
indigo and violet).