As part of their Extreme Earth context, Primary 7H have been looking at the effects of Natural Disasters on communities. One of the problems people might face after an earthquake or flood is access to clean water so we looked at what could be used to filter water in the case of a Natural Disaster.
Miss Campbell set up the experiment with us asking us to find out which materials are best to filter out the mud and debris often found in water after a disaster.
We used sand, stones and cotton wool to try and filter the water, we recognised that cotton wool could be swapped for clothing after the event of a disaster as cotton wool may not be readily available.
We made predictions about what materials would be best at soaking up the dirt in the water and found that putting both the stones and cotton wool together was the best. We decided that it would still be best to boil the water after cleaning it up to make sure it was safe to drink.
