Have a look at the lesson here

http://www.slideshare.net/griggans/sexual-reproduction/11

We have now completed our work on light. We have seen that light travels in straight lines and can be both reflected and refracted. We looked at how white light can be split into a spectrum of colours with a prism. Finally, we looked at the effect of colour filters.

We will spend a short time revising this topic and then you need to be ready for a test. Download the vocabulary list for the unit here and learn the keywords.