5. energy to keep warm and make things work
We then talked about places we could source water on Earth and what could cause pollution in our waterways. Our next scenario was if we were in space, how could we make sure we had a supply of water to keep us alive?
Miss Lester then showed us how to make a simple water filter using a plastic soft drink bottle, stones, pebbles, sand and a coffee filter. Mitchell made us some dirty water, complete with leaves and we filtered the water three times through the basic filter.