1. What is the order?

2. Be able to explain how rainbows are created
Your friend has sent you a postcard saying that they have seen a rainbow on holiday, but they don’t understand how this happens. Write a postcard back explaining how a rainbow is created…
raindrops
speed
refraction/ refracted
sunlight
dispersion/ dispersed
angle

3. Be able to explain how rainbows are created
We see light from the Sun as white light…
When sunlight shines through raindrops,
…its speed changes –
the light slows down.
This causes the light to be refracted.
Different colours are refracted at different angles,
…so the light is dispersed.
We see the dispersed colours as a rainbow.

4. A rainbow is made up of different….
COLOURS!
But, how do we see different colours?
Why do they not all look exactly the same?
… to explain this we need to look back at reflection of light.

5. Colour Success Criteria Today you will:
Know that white light is made up from all the colours of the spectrum combined
Understand the effect of using different coloured filters
Be able to explain how we see different colours

6. Combining all the colours in the spectrum creates white light!
Know that white light is made up from all the colours of the spectrum combined
What happens when you combine all the colours of the spectrum together?
Newton’s discs
Combining all the colours in the spectrum creates white light!

7. Know that white light is made up from all the colours of the spectrum combined
What does the W in the centre stand for?

8. Know that white light is made up from all the colours of the spectrum combined
Newton’s experiment video

9. Understand the effect of using different coloured filters

10. Understand the effect of using different coloured filters

11. Be able to explain how we see different colours
Red
Orange
Yellow
Green
Blue
Indigo
Violet
White light is made up of all the colours in the rainbow.
To see any of these different colours, all the colours of white light are absorbed EXCEPT for the colour that you can see, which is reflected back!

12. Be able to explain how we see different colours