Survival Science

posted 17 Mar 2015, 11:19 by Philippa Dancey
In this session the class were identifying which solids were soluble. This experiment lead us to thinking about which materials would be suitable to use in a filter, to filter solids from a liquid. Bear Grylls would have used this method in the rainforest to filter dirty water to produce clean water to drink.  The class concluded that sand is an insoluble solid and so would be good to use in a filter.