Why are there different colours of light?

1.  We can split up white light into many different colours using a glass.  When we get this it is called a

2. Label the colours:

                                   
 
 
 
 
 

3.  The prism changes the of the red light

     This happens because the light is as it goes into and out of the glass.

4.  The prism changes the direction of light the most and the direction of light the least.

    This is because violet light is refracted than red light.

5.  Red waves have a wavelength than violet waves.

6.  How many violet waves are there:
(a)  in a thousandth of a millimetre?
(b)  in a whole millimetre?

 

What you need to remember
When rays of light pass through a prism their is changed.
You can use a prism to split up white light into all its .  The pattern of colours is called a .
The prism splits up light because the prism different colours by different amounts.
Different colours of light have different  

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