1. Mixing coloured lights
10.5b Colours
Mixing coloured lights
Red, green and blue are called primary colours. All other colours can be made by combining these in various ways.
Magenta, cyan and yellow are secondary colours. They are made by combining two primary colours.

2. Why does my apple look red?
10.5b Colours
Why does my apple look red?
The skin of a red apple contains a pigment that reflects red light but absorbs all other colours of the spectrum shining on it.

3. 10.5b Colours Seeing colours Why is Ed’s T-shirt yellow?
Why is Polly’s T-shirt red?

4. 10.5b Colours
Black…
Black objects absorb nearly all the light energy shining on them.
Black objects also absorb heat radiation (infrared) so keep you warmer.

5. 10.5b Colours
…and white
White objects reflect nearly all the light energy shining on them.
White objects also reflect infrared so help to keep you cool in hot weather.